chore: bump jvm lib to 0.31.1

1da01b4a0b ci: change rust stable version to 0.71.0 (Steve Myers)
f1ba03bf50 ci: fix to work with bdk 0.28.1 and msrv 1.61.0 (Steve Myers)

Pull request description:

  ### Description

  Fixes CI to work with BDK 0.28.x and MSRV 1.61.0. For MSRV had to pin two dependencies.

  ### Notes to the reviewers

  I also updated in CI our 'stable" version of rust to be current stable which is `1.71.0`.

  ### Changelog notice

  None, only CI changes.

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

ACKs for top commit:
  thunderbiscuit:
    ACK 1da01b4a0b.

Tree-SHA512: 72f7d8dbef791daebf3f4d9d92722f1f3780d173501673ca6f47af39dd2102c85944ba603e4e9213d44a294ab1cec43dff82213fe53c5dea663279473be64a15

.github/ISSUE_TEMPLATE/enhancement_request.md

@@ -0,0 +1,17 @@
+---
+name: Enhancement request
+about: Request a new feature or change to an existing feature
+title: ''
+labels: 'enhancement'
+assignees: ''
+
+---
+
+**Describe the enhancement**  
+<!-- A clear and concise description of what you would like added or changed. -->
+
+**Use case**  
+<!-- Tell us how you or others will use this new feature or change to an existing feature. --> 
+
+**Additional context**
+<!-- Add any other context about the enhancement here. --> 

.github/ISSUE_TEMPLATE/minor_release.md

@@ -4,98 +4,84 @@ about: Create a new minor release [for release managers only]
 title: 'Release MAJOR.MINOR+1.0'
 labels: 'release'
 assignees: ''
-
 ---
 
 ## Create a new minor release
+## Bumping BDK Rust Version
+1. - [ ] Open a PR with an update to `Cargo.toml` to the new bdk release candidate and ensure all CI workflows run correctly. Fix errors if necessary.
+2. - [ ] Once the new bdk release is out, update the PR to replace the release candidate with the full release and merge.
 
-### Summary
+### Specific Libraries' Workflows
+#### _Android_
+3. - [ ] Update the API docs to reflect the changes in the API
+4. - [ ] Delete the `target` directory in bdk-ffi and all previous artifacts to make sure you're building the library from scratch.
+5. - [ ] Build the library and run the tests, and adjust if necessary.
+```shell
+# start an emulator prior to running the tests
+cd ./bdk-android/
+./gradlew buildAndroidLib
+./gradlew connectedAndroidTest
+```
+6. - [ ] Update the readme if necessary
+#### _JVM_
+7. - [ ] Update the API docs to reflect the changes in the API
+8. - [ ] Delete the `target` directory in bdk-ffi and all previous artifacts to make sure you're building the library from scratch
+9. - [ ] Build the library and run the tests, and adjust if necessary
+```shell
+cd ./bdk-jvm/
+./gradlew buildJvmLib
+./gradlew test
+```
+10. - [ ] Update the readme if necessary
+#### _Swift_
+11. - [ ] Run the tests and adjust if necessary
+```shell
+./bdk-swift/build-local-swift.sh
+cd ./bdk-swift/
+swift test
+```
+12. - [ ] Update the readme if necessary
+#### _Python_
+13. - [ ] Delete the `.tox`, `dist`, `build`, and `bdkpython.egg-info` and rust `target` directories to make sure you are building the library from scratch without any caches
+14. - [ ] Build the library
+```shell
+cd ./bdk-python/
+pip3 install --requirement requirements.txt
+bash ./scripts/generate-macos-arm64.sh # run the script for your particular platform
+python3 setup.py --verbose bdist_wheel
+```
+15. - [ ] Run the tests and adjust if necessary
+```shell
+pip3 install ./dist/bdkpython-<yourversion>-py3-none-any.whl --force-reinstall
+python -m unittest --verbose tests/test_bdk.py
+```
+16. - [ ] Update the readme and `setup.py` if necessary
 
-<--release summary to be used in announcements-->
-
-### Commit
-
-<--latest commit ID to include in this release-->
-
-### Changelog
-
-<--add notices from PRs merged since the prior release, see ["keep a changelog"]-->
-
-### Checklist
-
-Release numbering must follow [Semantic Versioning]. These steps assume the current `master`
-branch **development** version is *MAJOR.MINOR.0*.
-
-#### On the day of the feature freeze
-
-Change the `master` branch to the next MINOR+1 version:
-
-- [ ] Switch to the `master` branch.
-- [ ] Create a new PR branch called `bump_dev_MAJOR_MINOR+1`, eg. `bump_dev_0_22`.
-- [ ] Bump the `bump_dev_MAJOR_MINOR+1` branch to the next development MINOR+1 version.
-  - Change the `Cargo.toml` version value to `MAJOR.MINOR+1.0`.
-  - The commit message should be "Bump version to MAJOR.MINOR+1.0".
-- [ ] Create PR and merge the `bump_dev_MAJOR_MINOR+1` branch to `master`.
-  - Title PR "Bump version to MAJOR.MINOR+1.0".
-
-Create a new release branch:
-
-- [ ] Double check that your local `master` is up-to-date with the upstream repo.
-- [ ] Create a new branch called `release/MAJOR.MINOR+1` from `master`.
-
-Add a release candidate tag, this is optional and only needed for major `bdk-ffi` changes that 
-require a longer testing cycle: 
-
-- [ ] Bump the `release/MAJOR.MINOR+1` branch to `MAJOR.MINOR+1.0-rc.1` version.
-  - Change the `Cargo.toml` version value to `MAJOR.MINOR+1.0-rc.1`.
-  - The commit message should be "Bump version to MAJOR.MINOR+1.0-rc.1".
-- [ ] Add a tag to the `HEAD` commit in the `release/MAJOR.MINOR+1` branch.
-  - The tag name should be `vMAJOR.MINOR+1.0-rc.1`
-  - Use message "Release MAJOR.MINOR+1.0 rc.1".
-  - Make sure the tag is signed, for extra safety use the explicit `--sign` flag.
-- [ ] Push the `release/MAJOR.MINOR` branch and new tag to the `bitcoindevkit/bdk` repo.
-  - Use `git push --tags` option to push the new `vMAJOR.MINOR+1.0-rc.1` tag.
-
-If any issues need to be fixed before the *MAJOR.MINOR+1.0* version is released:
-
-- [ ] Merge fix PRs to the `master` branch.
-- [ ] Git cherry-pick fix commits to the `release/MAJOR.MINOR+1` branch.
-- [ ] Verify fixes in `release/MAJOR.MINOR+1` branch.
-- [ ] Bump the `release/MAJOR.MINOR+1` branch to `MAJOR.MINOR+1.0-rc.x+1` version.
-  - Change the `Cargo.toml` version value to `MAJOR.MINOR+1.0-rc.x+1`.
-  - The commit message should be "Bump version to MAJOR.MINOR+1.0-rc.x+1".
-- [ ] Add a tag to the `HEAD` commit in the `release/MAJOR.MINOR+1` branch.
-  - The tag name should be `vMAJOR.MINOR+1.0-rc.x+1`, where x is the current release candidate number.
-  - Use tag message "Release MAJOR.MINOR+1.0 rc.x+1".
-  - Make sure the tag is signed, for extra safety use the explicit `--sign` flag.
-- [ ] Push the new tag to the `bitcoindevkit/bdk` repo.
-  - Use `git push --tags` option to push the new `vMAJOR.MINOR+1.0-rc.x+1` tag.
-
-#### On the day of the release
-
-Tag and publish new release:
-
-- [ ] Bump the `release/MAJOR.MINOR+1` branch to `MAJOR.MINOR+1.0` version.
-  - Change the `Cargo.toml` version value to `MAJOR.MINOR+1.0`.
-  - The commit message should be "Bump version to MAJOR.MINOR+1.0".
-- [ ] Add a tag to the `HEAD` commit in the `release/MAJOR.MINOR+1` branch.
-  - The tag name should be `vMAJOR.MINOR+1.0`
-  - The first line of the tag message should be "Release MAJOR.MINOR+1.0".
-  - In the body of the tag message put a copy of the **Summary** and **Changelog** for the release.
-  - Make sure the tag is signed, for extra safety use the explicit `--sign` flag.
-- [ ] Wait for the CI to finish one last time.
-- [ ] Push the new tag to the `bitcoindevkit/bdk` repo.
-- [ ] Create the release on GitHub.
-  - Go to "tags", click on the dots on the right and select "Create Release".
-  - Set the title to `Release MAJOR.MINOR+1.0`.
-  - In the release notes body put the **Summary** and **Changelog**.
-  - Use the "+ Auto-generate release notes" button to add details from included PRs.
-  - Until we reach a `1.0.0` release check the "Pre-release" box.
-- [ ] After downstream language repos are also updated announce the release, using the **Summary**,  
-      on Discord, Twitter and Mastodon.
-- [ ] Celebrate 🎉
-
-[Semantic Versioning]: https://semver.org/
-[crates.io]: https://crates.io/crates/bdk
-[docs.rs]: https://docs.rs/bdk/latest/bdk
-["keep a changelog"]: https://keepachangelog.com/en/1.0.0/
+### Release Workflow
+17. - [ ] Update the Android, JVM, Python, and Swift libraries as per the _Specific Libraries' Workflows_ section above. Open a single PR on master for all of these changes called `Prepare language bindings libraries for 0.X release`. See [example PR here](https://github.com/bitcoindevkit/bdk-ffi/pull/315).
+18. - [ ] Create a new branch off of `master` called `release/version`
+19. - [ ] Update bdk-android version from `SNAPSHOT` version to release version
+20. - [ ] Update bdk-jvm version from `SNAPSHOT` version to release version
+21. - [ ] Update bdk-python version from `.dev` version to release version
+22. - [ ] Open a PR to that release branch that updates the Android, JVM, and Python libraries' versions in step 19, 20, and 21. See [example PR here](https://github.com/bitcoindevkit/bdk-ffi/pull/316).
+23. - [ ] Get a review and ACK and merge the PR updating all the languages to their release versions
+24. - [ ] Create the tag for the release and make sure to add the changelog info to the tag (works better if you prepare the tag message on the side in a text editor). Push the tag to GitHub.
+```shell
+git tag v0.6.0 --sign --edit
+git push upstream v0.6.0
+```
+25. - [ ] Trigger manual releases for all 4 libraries (for Swift, trigger the release on `master` and simply add the version number in the text field when running the workflow manually. Note that the version number must not contain the `v`, i.e. `0.26.0`)
+26. - [ ] Make sure the released libraries work and contain the artifacts you would expect 
+27. - [ ] Aggregate all the changelog notices from the PRs and add them to the changelog file
+28. - [ ] Bump the versions on master from `0.9.0-SNAPSHOT` to `0.10.0-SNAPSHOT`, `0.6.0.dev0` to `0.7.0.dev0`
+29. - [ ] Apply changes to the minor_release and patch_release issue templates if they need any
+30. - [ ] Open a PR on master with the changes in steps 29, 30, and 31. See [example PR here](https://github.com/bitcoindevkit/bdk-ffi/pull/317). Get a review and merge the PR.
+31. - [ ] Make release on GitHub (set as pre-release and generate auto release notes between the previous tag and the new one)
+32. - [ ] Build and publish API docs for JVM, Android, and Java on the website
+```shell
+./gradlew dokkaHtml    # bdk-jvm (Dokka)
+./gradlew dokkaJavadoc # bdk-jvm (java-style documentation)
+./gradlew dokkaHtml    # bdk-android (Dokka)
+```
+33. - [ ] Post in the announcement channel
+34. - [ ] Tweet about the library

.github/ISSUE_TEMPLATE/patch_release.md

@@ -1,69 +0,0 @@
----
-name: Patch Release
-about: Create a new patch release [for release managers only]
-title: 'Release MAJOR.MINOR.PATCH+1'
-labels: 'release'
-assignees: ''
-
----
-
-## Create a new patch release
-
-### Summary
-
-<--release summary to be used in announcements-->
-
-### Commit
-
-<--latest commit ID to include in this release-->
-
-### Changelog
-
-<--add notices from PRs merged since the prior release, see ["keep a changelog"]-->
-
-### Checklist
-
-Release numbering must follow [Semantic Versioning]. These steps assume the current `master`
-branch **development** version is *MAJOR.MINOR.PATCH*.
-
-### On the day of the patch release
-
-Change the `master` branch to the new PATCH+1 version:
-
-- [ ] Switch to the `master` branch.
-- [ ] Create a new PR branch called `bump_dev_MAJOR_MINOR_PATCH+1`, eg. `bump_dev_0_22_1`.
-- [ ] Bump the `bump_dev_MAJOR_MINOR` branch to the next development PATCH+1 version.
-  - Change the `Cargo.toml` version value to `MAJOR.MINOR.PATCH+1`.
-  - The commit message should be "Bump version to MAJOR.MINOR.PATCH+1".
-- [ ] Create PR and merge the `bump_dev_MAJOR_MINOR_PATCH+1` branch to `master`.
-  - Title PR "Bump version to MAJOR.MINOR.PATCH+1".
-
-Cherry-pick, tag and publish new PATCH+1 release:
-
-- [ ] Merge fix PRs to the `master` branch.
-- [ ] Git cherry-pick fix commits to the `release/MAJOR.MINOR` branch to be patched.
-- [ ] Verify fixes in `release/MAJOR.MINOR` branch.
-- [ ] Bump the `release/MAJOR.MINOR.PATCH+1` branch to `MAJOR.MINOR.PATCH+1` version.
-  - Change the `Cargo.toml` version value to `MAJOR.MINOR.MINOR.PATCH+1`.
-  - The commit message should be "Bump version to MAJOR.MINOR.PATCH+1".
-- [ ] Add a tag to the `HEAD` commit in the `release/MAJOR.MINOR` branch.
-  - The tag name should be `vMAJOR.MINOR.PATCH+1`
-  - The first line of the tag message should be "Release MAJOR.MINOR.PATCH+1".
-  - In the body of the tag message put a copy of the **Summary** and **Changelog** for the release.
-  - Make sure the tag is signed, for extra safety use the explicit `--sign` flag.
-- [ ] Wait for the CI to finish one last time.
-- [ ] Push the new tag to the `bitcoindevkit/bdk` repo.
-- [ ] Create the release on GitHub.
-  - Go to "tags", click on the dots on the right and select "Create Release".
-  - Set the title to `Release MAJOR.MINOR.PATCH+1`.
-  - In the release notes body put the **Summary** and **Changelog**.
-  - Use the "+ Auto-generate release notes" button to add details from included PRs.
-  - Until we reach a `1.0.0` release check the "Pre-release" box.
-- [ ] After downstream language repos are also updated announce the release, using the **Summary**,  
-      on Discord, Twitter and Mastodon.
-- [ ] Celebrate 🎉
-
-[Semantic Versioning]: https://semver.org/
-[crates.io]: https://crates.io/crates/bdk
-[docs.rs]: https://docs.rs/bdk/latest/bdk
-["keep a changelog"]: https://keepachangelog.com/en/1.0.0/

.github/workflows/audit.yml

@@ -10,10 +10,10 @@ on:
 
 jobs:
   security_audit:
-    name: Security Audit
+    name: Security audit
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions-rs/audit-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/build-python-wheels.yaml

@@ -1,126 +0,0 @@
-name: Build Python wheels
-on:
-  push:
-    paths:
-      - "bdk-ffi/**"
-      - "bdk-python/**"
-  pull_request:
-    paths:
-      - "bdk-ffi/**"
-      - "bdk-python/**"
-
-# We use manylinux2014 because older CentOS versions used by 2010 and 1 have a very old glibc version, which
-# makes it very hard to use GitHub's javascript actions (checkout, upload-artifact, etc).
-# They mount their own nodejs interpreter inside your container, but since that's not statically linked it
-# tries to load glibc and fails because it requires a more recent version.
-
-jobs:
-  build-manylinux2014-x86_64-wheel:
-    name: 'Build Manylinux 2014 x86_64 wheel'
-    runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: bdk-python
-    container:
-      image: quay.io/pypa/manylinux2014_x86_64
-      env:
-        PLAT: manylinux2014_x86_64
-        PYBIN: '/opt/python/${{ matrix.python }}/bin'
-    strategy:
-      matrix:
-        python: # Update this list whenever the docker image is updated (check /opt/python/)
-          # - cp36-cp36m
-          # - cp37-cp37m
-          # - cp38-cp38
-          # - cp39-cp39
-          - cp310-cp310
-          # - pp37-pypy37_pp73
-          # - pp38-pypy38_pp73
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-        with:
-          submodules: true
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-      - name: install requirements
-        run: ${PYBIN}/pip install -r requirements.txt
-      - name: generate bindings
-        run: bash generate.sh
-      - name: build wheel
-        run: ${PYBIN}/pip wheel . --no-deps -w /tmp/wheelhouse
-      - name: repair wheel
-        run: auditwheel repair /tmp/wheelhouse/* --plat "$PLAT" -w /tmp/wheelhouse-repaired
-      - uses: actions/upload-artifact@v2
-        with:
-          name: bdkpython-manylinux2014-x86_64-${{ matrix.python }}
-          path: /tmp/wheelhouse-repaired/*.whl
-
-  build-macos-universal-wheel:
-    name: 'Build macOS universal wheel'
-    runs-on: macos-latest
-    defaults:
-      run:
-        working-directory: bdk-python
-    strategy:
-      matrix:
-        python:
-          # - '3.7'
-          # - '3.8'
-          # - '3.9'
-          - '3.10'
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-        with:
-          submodules: true
-      - uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python }}
-      - run: python3 --version
-      - run: rustup target add aarch64-apple-darwin
-      - run: pip3 install --user -r requirements.txt
-      - run: pip3 install --user wheel
-      - run: bash generate.sh
-      - name: build wheel
-        env:
-          ARCHFLAGS: "-arch x86_64 -arch arm64"
-        run: python3 setup.py -v bdist_wheel
-      - uses: actions/upload-artifact@v2
-        with:
-          name: bdkpython-macos-${{ matrix.python }}
-          path: dist/*.whl
-
-  build-windows-wheel:
-    name: 'Build windows wheel'
-    runs-on: windows-latest
-    defaults:
-      run:
-        working-directory: bdk-python
-    strategy:
-      matrix:
-        python:
-          # - '3.7'
-          # - '3.8'
-          # - '3.9'
-          - '3.10'
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-        with:
-          submodules: true
-      - uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python }}
-      - run: python --version
-      - run: pip install --user -r requirements.txt
-      - run: bash generate.sh
-        shell: bash
-      - run: pip install --user wheel
-      - name: build wheel
-        run: python setup.py -v bdist_wheel
-      - uses: actions/upload-artifact@v2
-        with:
-          name: bdkpython-win-${{ matrix.python }}
-          path: dist/*.whl

.github/workflows/cont_integration.yml

@@ -1,4 +1,4 @@
-name: bdk-ffi CI
+name: Rust layer CI
 on:
   push:
     paths:
@@ -8,59 +8,78 @@ on:
       - "bdk-ffi/**"
 
 jobs:
-
   build-test:
     name: Build and test
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         rust:
-          - version: 1.63.0 # STABLE
+          - version: 1.71.0 # STABLE
             clippy: true
           - version: 1.61.0 # MSRV
     steps:
-      - name: checkout
-        uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v3
+
       - name: Generate cache key
         run: echo "${{ matrix.rust.version }} ${{ matrix.features }}" | tee .cache_key
-      - name: cache
-        uses: actions/cache@v2
+
+      - name: Cache
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cargo/registry
             ~/.cargo/git
             target
           key: ${{ runner.os }}-cargo-${{ hashFiles('.cache_key') }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
+
       - name: Set default toolchain
         run: rustup default ${{ matrix.rust.version }}
+
       - name: Set profile
         run: rustup set profile minimal
+
       - name: Add clippy
         if: ${{ matrix.rust.clippy }}
         run: rustup component add clippy
+
       - name: Update toolchain
         run: rustup update
+
+      - name: Pin dependencies for MSRV
+        if: matrix.rust.version == '1.61.0'
+        run: |
+          cargo update -p hashlink --precise "0.8.1"
+          cargo update -p tokio --precise "1.29.1"
+          cargo update -p flate2 --precise "1.0.26"
       - name: Build
         run: cargo build
+
       - name: Clippy
         if: ${{ matrix.rust.clippy }}
-        run: cargo clippy --all-targets -- -D warnings
+        run: cargo clippy --all-targets --features "uniffi/bindgen-tests" -- -D warnings
+
       - name: Test
-        run: CLASSPATH=./tests/jna/jna-5.8.0.jar cargo test
+        run: CLASSPATH=./tests/jna/jna-5.8.0.jar cargo test --features uniffi/bindgen-tests
 
   fmt:
     name: Rust fmt
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
+
       - name: Set default toolchain
         run: rustup default nightly
+
       - name: Set profile
         run: rustup set profile minimal
+
       - name: Add rustfmt
         run: rustup component add rustfmt
+
       - name: Update toolchain
         run: rustup update
+
       - name: Check fmt
         run: cargo fmt --all -- --config format_code_in_doc_comments=true --check

.github/workflows/publish-android.yaml

@@ -1,27 +1,29 @@
 name: Publish bdk-android to Maven Central
 on: [workflow_dispatch]
 
+# The default Android NDK on the ubuntu-22.04 image is 25.2.9519653
+# We replace the default environment variable ANDROID_NDK_ROOT: /usr/local/lib/android/sdk/ndk/25.2.9519653
+# with an older version of the NDK (21.4.7075529) using the fix proposed here: https://github.com/actions/runner-images/issues/5930
+# For information on why this is needed at the moment see issues #242 and #243, and PR #282
 env:
   ANDROID_NDK_ROOT: /usr/local/lib/android/sdk/ndk/21.4.7075529
-  # By default, the new ubuntu-20.04 images use the following ANDROID_NDK_ROOT
-  # ANDROID_NDK_ROOT: /usr/local/lib/android/sdk/ndk/25.0.8775105
 
 jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
-      - name: Install Android NDK 21.4.7075529
+      - name: "Install Android NDK 21.4.7075529"
         run: |
           ANDROID_ROOT=/usr/local/lib/android
           ANDROID_SDK_ROOT=${ANDROID_ROOT}/sdk
           SDKMANAGER=${ANDROID_SDK_ROOT}/cmdline-tools/latest/bin/sdkmanager
           echo "y" | $SDKMANAGER "ndk;21.4.7075529"
 
-      - name: Check out PR branch
-        uses: actions/checkout@v2
+      - name: "Check out PR branch"
+        uses: actions/checkout@v3
 
-      - name: cache
-        uses: actions/cache@v2
+      - name: "Cache"
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cargo/registry
@@ -29,21 +31,24 @@ jobs:
             ./target
           key: ${{ runner.os }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
 
-      - name: Set up JDK
-        uses: actions/setup-java@v2
+      - name: "Set up JDK"
+        uses: actions/setup-java@v3
         with:
           distribution: temurin
           java-version: 11
 
-      - name: Install rust android targets
+      - name: "Set default Rust version to 1.67.0"
+        run: rustup default 1.67.0
+
+      - name: "Install Rust Android targets"
         run: rustup target add x86_64-linux-android aarch64-linux-android armv7-linux-androideabi
 
-      - name: Build bdk-android library
+      - name: "Build bdk-android library"
         run: |
           cd bdk-android
           ./gradlew buildAndroidLib
 
-      - name: Publish to Maven Local and Maven Central
+      - name: "Publish to Maven Local and Maven Central"
         env:
           ORG_GRADLE_PROJECT_signingKeyId: ${{ secrets.PGP_KEY_ID }}
           ORG_GRADLE_PROJECT_signingKey: ${{ secrets.PGP_SECRET_KEY }}

.github/workflows/publish-jvm.yaml

@@ -2,14 +2,14 @@ name: Publish bdk-jvm to Maven Central
 on: [workflow_dispatch]
 
 jobs:
-  build-jvm-macOS-M1-native-lib:
-    name: Create M1 and x86_64 JVM native binaries
+  build-macOS-native-libs:
+    name: "Create M1 and x86_64 native binaries"
     runs-on: macos-12
     steps:
-      - name: Checkout publishing branch
-        uses: actions/checkout@v2
+      - name: "Checkout publishing branch"
+        uses: actions/checkout@v3
 
-      - name: Cache
+      - name: "Cache"
         uses: actions/cache@v3
         with:
           path: |
@@ -18,42 +18,68 @@ jobs:
             ./target
           key: ${{ runner.os }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
 
-      - name: Set up JDK
-        uses: actions/setup-java@v2
+      - name: "Set up JDK"
+        uses: actions/setup-java@v3
         with:
           distribution: temurin
           java-version: 11
 
-      - name: Install aarch64 Rust target
+      - name: "Set default Rust version to 1.67.0"
+        run: rustup default 1.67.0
+
+      - name: "Install aarch64 Rust target"
         run: rustup target add aarch64-apple-darwin
 
-      - name: Build bdk-jvm library
+      - name: "Build bdk-jvm library"
         run: |
           cd bdk-jvm
           ./gradlew buildJvmLib
 
-      # build aarch64 + x86_64 native libraries and upload
-      - name: Upload macOS native libraries for reuse in publishing job
+      - name: "Upload macOS native libraries for reuse in publishing job"
         uses: actions/upload-artifact@v3
         with:
-          # name: no name is required because we upload the entire directory
-          # the default name "artifact" will be used
+          name: artifact-macos
           path: /Users/runner/work/bdk-ffi/bdk-ffi/bdk-jvm/lib/src/main/resources/
 
-  build-jvm-full-library:
-    name: Create full bdk-jvm library
-    needs: [build-jvm-macOS-M1-native-lib]
-    runs-on: ubuntu-22.04
+  build-windows-native-lib:
+    name: "Create Windows native binaries"
+    runs-on: windows-2022
     steps:
-      - name: Checkout publishing branch
-        uses: actions/checkout@v2
+      - name: "Checkout publishing branch"
+        uses: actions/checkout@v3
 
-      - name: Update bdk-ffi git submodule
+      - name: "Set up JDK"
+        uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: 11
+
+      - name: "Set default Rust version to 1.67.0"
+        run: rustup default 1.67.0
+
+      - name: "Install x86_64-pc-windows-msvc Rust target"
+        run: rustup target add x86_64-pc-windows-msvc
+
+      - name: "Build bdk-jvm library"
         run: |
-          git submodule set-url bdk-ffi https://github.com/bitcoindevkit/bdk-ffi.git
-          git submodule update --init bdk-ffi
+          cd bdk-jvm
+          ./gradlew buildJvmLib
 
-      - name: Cache
+      - name: "Upload Windows native libraries for reuse in publishing job"
+        uses: actions/upload-artifact@v3
+        with:
+          name: artifact-windows
+          path: D:\a\bdk-ffi\bdk-ffi\bdk-jvm\lib\src\main\resources\
+
+  build-full-library:
+    name: Create full bdk-jvm library
+    needs: [build-macOS-native-libs, build-windows-native-lib]
+    runs-on: ubuntu-20.04
+    steps:
+      - name: "Checkout publishing branch"
+        uses: actions/checkout@v3
+
+      - name: "Cache"
         uses: actions/cache@v3
         with:
           path: |
@@ -62,26 +88,39 @@ jobs:
             ./target
           key: ${{ runner.os }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
 
-      - name: Set up JDK
-        uses: actions/setup-java@v2
+      - name: "Set up JDK"
+        uses: actions/setup-java@v3
         with:
           distribution: temurin
           java-version: 11
 
-      - name: Build bdk-jvm library
+      - name: "Set default Rust version to 1.67.0"
+        run: rustup default 1.67.0
+
+      - name: "Build bdk-jvm library"
         run: |
           cd bdk-jvm
           ./gradlew buildJvmLib
 
-      - name: Download macOS native libraries from previous job
+      - name: "Download macOS native binaries from previous job"
         uses: actions/download-artifact@v3
-        id: download
         with:
-          # download the artifact created in the prior job (named "artifact")
-          name: artifact
+          name: artifact-macos
           path: ./bdk-jvm/lib/src/main/resources/
 
-      - name: Publish to Maven Central
+      - name: "Download Windows native libraries from previous job"
+        uses: actions/download-artifact@v3
+        with:
+          name: artifact-windows
+          path: ./bdk-jvm/lib/src/main/resources/
+
+      - name: "Upload library code and binaries"
+        uses: actions/upload-artifact@v3
+        with:
+          name: artifact-full
+          path: ./bdk-jvm/lib/
+
+      - name: "Publish to Maven Central"
         env:
           ORG_GRADLE_PROJECT_signingKeyId: ${{ secrets.PGP_KEY_ID }}
           ORG_GRADLE_PROJECT_signingKey: ${{ secrets.PGP_SECRET_KEY }}

.github/workflows/publish-python.yaml

@@ -1,4 +1,4 @@
-name: Build and publish Python wheels
+name: Publish bdkpython to PyPI
 on: [workflow_dispatch]
 
 # We use manylinux2014 because older CentOS versions used by 2010 and 1 have a very old glibc version, which
@@ -7,9 +7,9 @@ on: [workflow_dispatch]
 # tries to load glibc and fails because it requires a more recent version.
 
 jobs:
-  build-manylinux2014-x86_64-wheel:
-    name: 'Build Manylinux 2014 x86_64 wheel'
-    runs-on: ubuntu-latest
+  build-manylinux2014-x86_64-wheels:
+    name: "Build Manylinux 2014 x86_64 wheel"
+    runs-on: ubuntu-20.04
     defaults:
       run:
         working-directory: bdk-python
@@ -17,127 +17,158 @@ jobs:
       image: quay.io/pypa/manylinux2014_x86_64
       env:
         PLAT: manylinux2014_x86_64
-        PYBIN: '/opt/python/${{ matrix.python }}/bin'
+        PYBIN: "/opt/python/${{ matrix.python }}/bin"
     strategy:
       matrix:
         python: # Update this list whenever the docker image is updated (check /opt/python/)
-          - cp36-cp36m
-          - cp37-cp37m
           - cp38-cp38
           - cp39-cp39
           - cp310-cp310
-          - pp37-pypy37_pp73
-          - pp38-pypy38_pp73
     steps:
-      - name: checkout
-        uses: actions/checkout@v2
+      - name: "Checkout"
+        uses: actions/checkout@v3
         with:
           submodules: true
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
-      - name: install requirements
-        run: ${PYBIN}/pip install -r requirements.txt
-      - name: generate bindings
-        run: bash generate.sh
-      - name: build wheel
-        run: ${PYBIN}/pip wheel . --no-deps -w /tmp/wheelhouse
-      - name: repair wheel
-        run: auditwheel repair /tmp/wheelhouse/* --plat "$PLAT" -w /tmp/wheelhouse-repaired
-      - uses: actions/upload-artifact@v2
+
+      - name: "Generate bdk.py and binaries"
+        run: bash ./scripts/generate-linux.sh
+
+      - name: "Build wheel"
+        # Specifying the plat-name argument is necessary to build a wheel with the correct name,
+        # see issue #350 for more information
+        run: ${PYBIN}/python setup.py bdist_wheel --plat-name manylinux_2_17_x86_64 --verbose
+
+      - uses: actions/upload-artifact@v3
         with:
           name: bdkpython-manylinux2014-x86_64-${{ matrix.python }}
-          path: /tmp/wheelhouse-repaired/*.whl
+          path: /home/runner/work/bdk-ffi/bdk-ffi/bdk-python/dist/*.whl
 
-  build-macos-universal-wheel:
-    name: 'Build macOS universal wheel'
-    runs-on: macos-latest
+  build-macos-arm64-wheels:
+    name: "Build macOS arm64 wheel"
+    runs-on: macos-13
     defaults:
       run:
         working-directory: bdk-python
     strategy:
       matrix:
         python:
-          - '3.7'
-          - '3.8'
-          - '3.9'
-          - '3.10'
+          - "3.8"
+          - "3.9"
+          - "3.10"
     steps:
-      - name: checkout
-        uses: actions/checkout@v2
+      - name: "Checkout"
+        uses: actions/checkout@v3
         with:
           submodules: true
-      - uses: actions/setup-python@v2
+
+      - name: "Install Python"
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python }}
-      - run: python3 --version
-      - run: rustup target add aarch64-apple-darwin
-      - run: pip3 install --user -r requirements.txt
-      - run: pip3 install --user wheel
-      - run: bash generate.sh
-      - name: build wheel
-        env:
-          ARCHFLAGS: "-arch x86_64 -arch arm64"
-        run: python3 setup.py -v bdist_wheel
-      - uses: actions/upload-artifact@v2
-        with:
-          name: bdkpython-macos-${{ matrix.python }}
-          path: dist/*.whl
 
-  build-windows-wheel:
-    name: 'Build windows wheel'
-    runs-on: windows-latest
+      - name: "Generate bdk.py and binaries"
+        run: bash ./scripts/generate-macos-arm64.sh
+
+      - name: "Build wheel"
+        # Specifying the plat-name argument is necessary to build a wheel with the correct name,
+        # see issue #350 for more information
+        run: python3 setup.py bdist_wheel --plat-name macosx_11_0_arm64 --verbose
+
+      - name: "Upload artifacts"
+        uses: actions/upload-artifact@v3
+        with:
+          name: bdkpython-macos-arm64-${{ matrix.python }}
+          path: /Users/runner/work/bdk-ffi/bdk-ffi/bdk-python/dist/*.whl
+
+  build-macos-x86_64-wheels:
+    name: "Build macOS x86_64 wheel"
+    runs-on: macos-13
     defaults:
       run:
         working-directory: bdk-python
     strategy:
       matrix:
         python:
-          - '3.7'
-          - '3.8'
-          - '3.9'
-          - '3.10'
+          - "3.8"
+          - "3.9"
+          - "3.10"
     steps:
-      - name: checkout
-        uses: actions/checkout@v2
+      - name: "Checkout"
+        uses: actions/checkout@v3
         with:
           submodules: true
-      - uses: actions/setup-python@v2
+
+      - name: "Install Python"
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python }}
-      - run: python --version
-      - run: pip install --user -r requirements.txt
-      - run: bash generate.sh
-        shell: bash
-      - run: pip install --user wheel
-      - name: build wheel
-        run: python setup.py -v bdist_wheel
-      - uses: actions/upload-artifact@v2
+
+      - name: "Generate bdk.py and binaries"
+        run: bash ./scripts/generate-macos-x86_64.sh
+
+      - name: "Build wheel"
+        # Specifying the plat-name argument is necessary to build a wheel with the correct name,
+        # see issue #350 for more information
+        run: python3 setup.py bdist_wheel --plat-name macosx_11_0_x86_64 --verbose
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: bdkpython-macos-x86_64-${{ matrix.python }}
+          path: /Users/runner/work/bdk-ffi/bdk-ffi/bdk-python/dist/*.whl
+
+  build-windows-wheels:
+    name: "Build Windows wheel"
+    runs-on: windows-2022
+    defaults:
+      run:
+        working-directory: bdk-python
+    strategy:
+      matrix:
+        python:
+          - "3.8"
+          - "3.9"
+          - "3.10"
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: "Generate bdk.py and binaries"
+        run: bash ./scripts/generate-windows.sh
+
+      - name: "Build wheel"
+        run: python setup.py bdist_wheel --verbose
+
+      - name: "Upload artifacts"
+        uses: actions/upload-artifact@v3
         with:
           name: bdkpython-win-${{ matrix.python }}
-          path: dist/*.whl
+          path: D:\a\bdk-ffi\bdk-ffi\bdk-python\dist\*.whl
 
   publish-pypi:
-    name: 'Publish on PyPI'
-    runs-on: ubuntu-latest
+    name: "Publish on PyPI"
+    runs-on: ubuntu-20.04
     defaults:
       run:
         working-directory: bdk-python
-    needs: [build-manylinux2014-x86_64-wheel, build-macos-universal-wheel, build-windows-wheel]
-    # needs: [build-macos-universal-wheel]
+    needs: [build-manylinux2014-x86_64-wheels, build-macos-arm64-wheels, build-macos-x86_64-wheels, build-windows-wheels]
     steps:
-      - name: Checkout
-        uses: actions/checkout@v2
+      - name: "Checkout"
+        uses: actions/checkout@v3
 
-      - name: 'Download artifacts in dist/ directory'
-        uses: actions/download-artifact@v2
+      - name: "Download artifacts in dist/ directory"
+        uses: actions/download-artifact@v3
         with:
           path: dist/
 
-      # - name: Display structure of downloaded files
-      #   run: ls -R
-
-      # - name: 'Publish on test PyPI'
+      # - name: "Publish on test PyPI"
       #   uses: pypa/gh-action-pypi-publish@release/v1
       #   with:
       #     user: __token__
@@ -145,7 +176,7 @@ jobs:
       #     repository_url: https://test.pypi.org/legacy/
       #     packages_dir: dist/*/
 
-      - name: 'Publish on PyPI'
+      - name: "Publish on PyPI"
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: __token__

.github/workflows/test-android.yaml

@@ -1,5 +1,6 @@
 name: Test Android
 on:
+  workflow_dispatch:
   push:
     paths:
       - "bdk-ffi/**"
@@ -9,27 +10,29 @@ on:
       - "bdk-ffi/**"
       - "bdk-android/**"
 
+# The default Android NDK on the ubuntu-22.04 image is 25.2.9519653
+# We replace the default environment variable ANDROID_NDK_ROOT: /usr/local/lib/android/sdk/ndk/25.2.9519653
+# with an older version of the NDK (21.4.7075529) using the fix proposed here: https://github.com/actions/runner-images/issues/5930
+# For information on why this is needed at the moment see issues #242 and #243, and PR #282
 env:
   ANDROID_NDK_ROOT: /usr/local/lib/android/sdk/ndk/21.4.7075529
-  # By default, the new ubuntu-20.04 images use the following ANDROID_NDK_ROOT
-  # ANDROID_NDK_ROOT: /usr/local/lib/android/sdk/ndk/25.0.8775105
 
 jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
-      - name: Install Android NDK 21.4.7075529
+      - name: "Install Android NDK 21.4.7075529"
         run: |
           ANDROID_ROOT=/usr/local/lib/android
           ANDROID_SDK_ROOT=${ANDROID_ROOT}/sdk
           SDKMANAGER=${ANDROID_SDK_ROOT}/cmdline-tools/latest/bin/sdkmanager
           echo "y" | $SDKMANAGER "ndk;21.4.7075529"
 
-      - name: Check out PR branch
-        uses: actions/checkout@v2
+      - name: "Check out PR branch"
+        uses: actions/checkout@v3
 
-      - name: cache
-        uses: actions/cache@v2
+      - name: "Cache"
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cargo/registry
@@ -37,16 +40,26 @@ jobs:
             ./target
           key: ${{ runner.os }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
 
-      - name: Set up JDK
-        uses: actions/setup-java@v2
+      - name: "Set up JDK"
+        uses: actions/setup-java@v3
         with:
           distribution: temurin
           java-version: 11
 
-      - name: Install rust android targets
+      - name: "Set default Rust version to 1.67.0"
+        run: rustup default 1.67.0
+
+      - name: "Install Rust Android targets"
         run: rustup target add x86_64-linux-android aarch64-linux-android armv7-linux-androideabi
 
-      - name: Run Android tests
+      - name: "Build Android library"
         run: |
           cd bdk-android
-          ./gradlew test --console=rich
+          ./gradlew buildAndroidLib
+
+# There are currently no unit tests for bdk-android and the integration tests require the macOS image
+# which is not working with the older NDK version we are using, so for now we just make sure that the library builds.
+#      - name: "Run Android unit tests"
+#        run: |
+#          cd bdk-android
+#          ./gradlew test --console=rich

.github/workflows/test-jvm.yaml

@@ -1,5 +1,6 @@
-name: Test JVM
+name: Test Kotlin/JVM
 on:
+  workflow_dispatch:
   push:
     paths:
       - "bdk-ffi/**"
@@ -13,11 +14,11 @@ jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
-      - name: Check out PR branch
-        uses: actions/checkout@v2
+      - name: "Check out PR branch"
+        uses: actions/checkout@v3
 
-      - name: cache
-        uses: actions/cache@v2
+      - name: "Cache"
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cargo/registry
@@ -25,13 +26,16 @@ jobs:
             ./target
           key: ${{ runner.os }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
 
-      - name: Set up JDK
-        uses: actions/setup-java@v2
+      - name: "Set up JDK"
+        uses: actions/setup-java@v3
         with:
           distribution: temurin
           java-version: 11
 
-      - name: Run JVM tests
+      - name: "Set default Rust version to 1.67.0"
+        run: rustup default 1.67.0
+
+      - name: "Run JVM tests"
         run: |
           cd bdk-jvm
-          ./gradlew test --console=rich
+          ./gradlew test

.github/workflows/test-python.yaml

@@ -0,0 +1,189 @@
+name: Test Python
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - "bdk-ffi/**"
+      - "bdk-python/**"
+  pull_request:
+    paths:
+      - "bdk-ffi/**"
+      - "bdk-python/**"
+
+# We use manylinux2014 because older CentOS versions used by 2010 and 1 have a very old glibc version, which
+# makes it very hard to use GitHub's javascript actions (checkout, upload-artifact, etc).
+# They mount their own nodejs interpreter inside your container, but since that's not statically linked it
+# tries to load glibc and fails because it requires a more recent version.
+
+jobs:
+  build-manylinux2014-x86_64-wheels:
+    name: "Build and test Manylinux 2014 x86_64 wheels"
+    runs-on: ubuntu-20.04
+    defaults:
+      run:
+        working-directory: bdk-python
+    container:
+      image: quay.io/pypa/manylinux2014_x86_64
+      env:
+        PLAT: manylinux2014_x86_64
+        PYBIN: "/opt/python/${{ matrix.python }}/bin"
+    strategy:
+      matrix:
+        python:
+          - cp38-cp38
+          - cp39-cp39
+          - cp310-cp310
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+
+      - name: "Generate bdk.py and binaries"
+        run: bash ./scripts/generate-linux.sh
+
+      - name: "Build wheel"
+        # Specifying the plat-name argument is necessary to build a wheel with the correct name,
+        # see issue #350 for more information
+        run: ${PYBIN}/python setup.py bdist_wheel --plat-name manylinux_2_17_x86_64 --verbose
+
+      - name: "Install wheel"
+        run: ${PYBIN}/pip install ./dist/*.whl
+
+      - name: "Run tests"
+        run: ${PYBIN}/python -m unittest tests/test_bdk.py --verbose
+
+      - name: "Upload artifact test"
+        uses: actions/upload-artifact@v3
+        with:
+          name: bdkpython-manylinux2014-x86_64-${{ matrix.python }}
+          path: /home/runner/work/bdk-ffi/bdk-ffi/bdk-python/dist/*.whl
+
+  build-macos-arm64-wheels:
+    name: "Build and test macOS arm64 wheels"
+    runs-on: macos-13
+    defaults:
+      run:
+        working-directory: bdk-python
+    strategy:
+      matrix:
+        python:
+          - "3.8"
+          - "3.9"
+          - "3.10"
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: "Install Python"
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: "Generate bdk.py and binaries"
+        run: bash ./scripts/generate-macos-arm64.sh
+
+      - name: "Build wheel"
+        # Specifying the plat-name argument is necessary to build a wheel with the correct name,
+        # see issue #350 for more information
+        run: python3 setup.py bdist_wheel --plat-name macosx_11_0_arm64 --verbose
+
+      # You can't install the arm64 wheel on the CI, so we skip these steps and simply test that the wheel builds
+      # - name: "Install wheel and run tests"
+      #   run: |
+      #     pip3 install ./dist/*.whl
+      #     python3 -m unittest tests/test_bdk.py --verbose
+
+      - name: "Upload artifact test"
+        uses: actions/upload-artifact@v3
+        with:
+          name: bdkpython-macos-arm64-${{ matrix.python }}
+          path: /Users/runner/work/bdk-ffi/bdk-ffi/bdk-python/dist/*.whl
+
+  build-macos-x86_64-wheels:
+    name: "Build and test macOS x86_64 wheels"
+    runs-on: macos-13
+    defaults:
+      run:
+        working-directory: bdk-python
+    strategy:
+      matrix:
+        python:
+          - "3.8"
+          - "3.9"
+          - "3.10"
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: "Generate bdk.py and binaries"
+        run: bash ./scripts/generate-macos-x86_64.sh
+
+      - name: "Build wheel"
+        # Specifying the plat-name argument is necessary to build a wheel with the correct name,
+        # see issue #350 for more information
+        run: python3 setup.py bdist_wheel --plat-name macosx_11_0_x86_64 --verbose
+
+      - name: "Install wheel"
+        run: pip3 install ./dist/*.whl
+
+      - name: "Run tests"
+        run: python3 -m unittest tests/test_bdk.py --verbose
+
+      - name: "Upload artifact test"
+        uses: actions/upload-artifact@v3
+        with:
+          name: bdkpython-macos-x86_64-${{ matrix.python }}
+          path: /Users/runner/work/bdk-ffi/bdk-ffi/bdk-python/dist/*.whl
+
+  build-windows-wheels:
+    name: "Build and test Windows wheels"
+    runs-on: windows-2022
+    defaults:
+      run:
+        working-directory: bdk-python
+    strategy:
+      matrix:
+        python:
+          - "3.8"
+          - "3.9"
+          - "3.10"
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: "Install Python"
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: "Generate bdk.py and binaries"
+        run: bash ./scripts/generate-windows.sh
+
+      - name: "Build wheel"
+        run: python setup.py bdist_wheel --verbose
+
+      - name: "Upload artifact test"
+        uses: actions/upload-artifact@v3
+        with:
+          name: bdkpython-windows-${{ matrix.python }}
+          path: D:\a\bdk-ffi\bdk-ffi\bdk-python\dist\*.whl
+
+      - name: "Install dependencies"
+        run: Get-ChildItem 'D:\a\bdk-ffi\bdk-ffi\bdk-python\dist\*.whl' | ForEach-Object {pip install $_.FullName}
+        shell: powershell
+
+      - name: "Run tests"
+        run: python -m unittest tests/test_bdk.py --verbose

.github/workflows/test-swift.yaml

@@ -1,5 +1,6 @@
 name: Test Swift
 on:
+  workflow_dispatch:
   push:
     paths:
       - "bdk-ffi/**"
@@ -13,8 +14,11 @@ jobs:
   build:
     runs-on: macos-12
     steps:
-      - name: Checkout branch
-        uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: "Set default Rust version to 1.67.0"
+        run: rustup default 1.67.0
 
       - name: Install Rust targets
         run: |
@@ -24,15 +28,15 @@ jobs:
 
       - name: Run bdk-ffi-bindgen
         working-directory: bdk-ffi
-        run: cargo run --package bdk-ffi-bindgen -- --language swift --out-dir ../bdk-swift/Sources/BitcoinDevKit
+        run: cargo run --bin uniffi-bindgen generate src/bdk.udl --language swift --out-dir ../bdk-swift/Sources/BitcoinDevKit --no-format
 
       - name: Build bdk-ffi for x86_64-apple-darwin
-        run: cargo build --profile release-smaller --target x86_64-apple-darwin
+        run: cargo build --package bdk-ffi --profile release-smaller --target x86_64-apple-darwin
 
       - name: Build bdk-ffi for aarch64-apple-darwin
-        run: cargo build --profile release-smaller --target aarch64-apple-darwin
+        run: cargo build --package bdk-ffi --profile release-smaller --target aarch64-apple-darwin
 
-      - name: Create lipo-ios-sim and lipo-macos
+      - name: Create lipo-macos
         run: |
           mkdir -p target/lipo-macos/release-smaller
           lipo target/aarch64-apple-darwin/release-smaller/libbdkffi.a target/x86_64-apple-darwin/release-smaller/libbdkffi.a -create -output target/lipo-macos/release-smaller/libbdkffi.a

.gitignore

@@ -31,3 +31,6 @@ bdkFFI.h
 BitcoinDevKit.swift
 bdk.swift
 .build
+
+# Python related
+__pycache__

CHANGELOG.md

@@ -1,13 +1,134 @@
 # Changelog
-All notable changes to this project prior to release **0.9.0** are documented in this file. Future
-changelog information can be found in each release's git tag and can be viewed with `git tag -ln100 "v*"`.
-Changelog info is also documented on the [GitHub releases](https://github.com/bitcoindevkit/bdk-ffi/releases)
-page. See [DEVELOPMENT_CYCLE.md](DEVELOPMENT_CYCLE.md) for more details.
+Changelog information can also be found in each release's git tag (which can be viewed with `git tag -ln100 "v*"`), as well as on the [GitHub releases](https://github.com/bitcoindevkit/bdk-ffi/releases) page. See [DEVELOPMENT_CYCLE.md](DEVELOPMENT_CYCLE.md) for more details.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.30.0]
+This release has a new API and a few internal optimizations and refactorings.
+
+- APIs Added
+  - Add BIP-86 descriptor templates [#388]
+
+[#388]: https://github.com/bitcoindevkit/bdk-ffi/pull/388
+
+## [0.29.0]
+This release has a number of new APIs, and adds support for Windows in bdk-jvm.
+
+Changelog
+- Add support for Windows in bdk-jvm [#336]
+- Add support for older version of Linux distros in bdk-jvm [#345]
+- APIs added
+  - Expose `is_mine()` method on the `Wallet` type [#355]
+  - Expose `to_bytes()` method on the `Script` type [#369]
+
+[#336]: https://github.com/bitcoindevkit/bdk-ffi/pull/336
+[#345]: https://github.com/bitcoindevkit/bdk-ffi/pull/345
+[#355]: https://github.com/bitcoindevkit/bdk-ffi/pull/355
+[#369]: https://github.com/bitcoindevkit/bdk-ffi/pull/369
+
+## [v0.28.0]
+- Update BDK to version 0.28.0 [#341]
+- Drop support of pypy releases of Python libraries [#351]
+- Drop support for Python 3.6 and 3.7 [#351]
+- Drop support for very old Linux versions that do not support the manylinux_2_17_x86_64 platform tag [#351]
+- APIs changed:
+  - Expose Address payload and network properties. [#325]
+  - Add SignOptions to Wallet.sign() params. [#326]
+  - address field on `AddressInfo` type is now of type `Address` [#333]
+  - new PartiallySignedTransaction.json_serialize() function to get JSON serialized value of all PSBT fields. [#334]
+  - Add from_script constructor to `Address` type [#337]
+
+[#325]: https://github.com/bitcoindevkit/bdk-ffi/pull/325
+[#326]: https://github.com/bitcoindevkit/bdk-ffi/pull/326
+[#333]: https://github.com/bitcoindevkit/bdk-ffi/pull/333
+[#334]: https://github.com/bitcoindevkit/bdk-ffi/pull/334
+[#337]: https://github.com/bitcoindevkit/bdk-ffi/pull/337
+[#341]: https://github.com/bitcoindevkit/bdk-ffi/pull/341
+[#351]: https://github.com/bitcoindevkit/bdk-ffi/pull/351
+
+## [v0.27.1]
+- Update BDK to version 0.27.1 [#312]
+- APIs changed
+  - `PartiallySignedTransaction.extract_tx()` returns a `Transaction` instead of the transaction bytes. [#296]
+  - `Blockchain.broadcast()` takes a `Transaction` instead of a `PartiallySignedTransaction`. [#296]
+- APIs added
+  - New `Transaction` structure that can be created from or serialized to consensus encoded bytes. [#296]
+  - Add Wallet.get_internal_address() API [#304]
+  - Add `AddressIndex::Peek(index)` and `AddressIndex::Reset(index)` APIs [#305]
+
+[#296]: https://github.com/bitcoindevkit/bdk-ffi/pull/296
+[#304]: https://github.com/bitcoindevkit/bdk-ffi/pull/304
+[#305]: https://github.com/bitcoindevkit/bdk-ffi/pull/305
+[#312]: https://github.com/bitcoindevkit/bdk-ffi/pull/312
+
+## [v0.26.0]
+- Update BDK to version 0.26.0 [#288]
+- APIs changed
+  - The descriptor and change_descriptor arguments on the wallet constructor now take a `Descriptor` instead of a `String`. [#260]
+  - TxBuilder.drain_to() argument is now `Script` instead of address `String`. [#279]
+- APIs added
+  - Added RpcConfig, BlockchainConfig::Rpc, and Auth [#125]
+  - Added Descriptor type in [#260] with the following methods:
+    - Default constructor requires a descriptor in String format and a Network
+    - new_bip44 constructor returns a Descriptor with structure pkh(key/44'/{0,1}'/0'/{0,1}/*)
+    - new_bip44_public constructor returns a Descriptor with structure pkh(key/{0,1}/*)
+    - new_bip49 constructor returns a Descriptor with structure sh(wpkh(key/49'/{0,1}'/0'/{0,1}/*))
+    - new_bip49_public constructor returns a Descriptor with structure sh(wpkh(key/{0,1}/*))
+    - new_bip84 constructor returns a Descriptor with structure wpkh(key/84'/{0,1}'/0'/{0,1}/*)
+    - new_bip84_public constructor returns a Descriptor with structure wpkh(key/{0,1}/*)
+    - as_string returns the public version of the output descriptor
+    - as_string_private returns the private version of the output descriptor if available, otherwise return the public version
+
+[#125]: https://github.com/bitcoindevkit/bdk-ffi/pull/125
+[#260]: https://github.com/bitcoindevkit/bdk-ffi/pull/260
+[#279]: https://github.com/bitcoindevkit/bdk-ffi/pull/279
+[#288]: https://github.com/bitcoindevkit/bdk-ffi/pull/288
+
+## [v0.25.0]
+- Update BDK to version 0.25.0 [#272]
+- APIs Added:
+  - from_string() constructors now available on DescriptorSecretKey and DescriptorPublicKey [#247]
+
+[#247]: https://github.com/bitcoindevkit/bdk-ffi/pull/247
+[#272]: https://github.com/bitcoindevkit/bdk-ffi/pull/272
+
+## [v0.11.0]
+- Update BDK to version 0.24.0 [#221]
+- APIs changed
+  - The constructor on the DescriptorSecretKey type now takes a Mnemonic instead of a String.
+- APIs added
+  - Added Mnemonic struct [#219] with following methods:
+    - new(word_count: WordCount) generates and returns Mnemonic with random entropy
+    - from_string(mnemonic: String) converts string Mnemonic to Mnemonic type with error
+    - from_entropy(entropy: Vec<u8>) generates and returns Mnemonic with given entropy
+    - as_string() view Mnemonic as string
+- APIs removed
+  - generate_mnemonic(word_count: WordCount)
+
+[#219]: https://github.com/bitcoindevkit/bdk-ffi/pull/219
+[#221]: https://github.com/bitcoindevkit/bdk-ffi/pull/221
+
+## [v0.10.0]
+- Update BDK to version 0.23.0 [#204]
+- Update uniffi-rs to latest version 0.21.0 [#216]
+- Breaking Changes
+  - Changed `TxBuilder.finish()` to return new `TxBuilderResult` [#209]
+  - `TxBuilder.add_recipient()` now takes a `Script` instead of an `Address` [#192]
+  - `AddressAmount` is now `ScriptAmount` [#192]
+- APIs Added
+  - Added `TxBuilderResult` with PSBT and TransactionDetails [#209]
+  - `Address` and `Script` structs have been added [#192]
+  - Add `PartiallySignedBitcoinTransaction.extract_tx()` function [#192]
+  - Add `secret_bytes()` method on the `DescriptorSecretKey` [#199]
+  - Add `PartiallySignedBitcoinTransaction.combine()` method [#200]
+
+[#192]: https://github.com/bitcoindevkit/bdk-ffi/pull/192
+[#199]: https://github.com/bitcoindevkit/bdk-ffi/pull/199
+[#200]: https://github.com/bitcoindevkit/bdk-ffi/pull/200
+[#204]: https://github.com/bitcoindevkit/bdk-ffi/pull/204
+[#209]: https://github.com/bitcoindevkit/bdk-ffi/pull/209
+[#216]: https://github.com/bitcoindevkit/bdk-ffi/pull/216
 
 ## [v0.9.0]
 - Breaking Changes
@@ -22,7 +143,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - APIs Added [#154]
   - `generate_mnemonic()`, returns string mnemonic
   - `interface DescriptorSecretKey`
-    - `new(Network, string_mnenoinc, password)`, contructs DescriptorSecretKey
+    - `new(Network, string_mnenoinc, password)`, constructs DescriptorSecretKey
     - `derive(DerivationPath)`, derives and returns child DescriptorSecretKey
     - `extend(DerivationPath)`, extends and returns DescriptorSecretKey
     - `as_public()`, returns DescriptorSecretKey as DescriptorPublicKey
@@ -102,9 +223,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 [BIP 0174]:https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki#encoding
 
-## [v0.2.0]
-
-[unreleased]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.9.0...HEAD
+[v0.30.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.29.0...v0.30.0
+[v0.29.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.28.0...v0.29.0
+[v0.28.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.27.1...v0.28.0
+[v0.27.1]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.26.0...v0.27.1
+[v0.26.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.25.0...v0.26.0
+[v0.25.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.11.0...v0.25.0
+[v0.11.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.10.0...v0.11.0
+[v0.10.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.9.0...v0.10.0
 [v0.9.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.8.0...v0.9.0
 [v0.8.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.7.0...v0.8.0
 [v0.7.0]: https://github.com/bitcoindevkit/bdk-ffi/compare/v0.6.0...v0.7.0

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
-members = ["bdk-ffi", "bdk-ffi-bindgen"]
-default-members = ["bdk-ffi", "bdk-ffi-bindgen"]
+members = ["bdk-ffi"]
+default-members = ["bdk-ffi"]
 exclude = ["api-docs", "bdk-android", "bdk-jvm", "bdk-python", "bdk-swift"]
 
 [profile.release-smaller]
@@ -9,4 +9,4 @@ opt-level = 'z'     # Optimize for size.
 lto = true          # Enable Link Time Optimization
 codegen-units = 1   # Reduce number of codegen units to increase optimizations.
 panic = 'abort'     # Abort on panic
-strip = true        # Strip symbols from binary*
+strip = true        # Strip symbols from binary

README.md

@@ -8,8 +8,7 @@
 </p>
 
 The workspace in this repository creates the `libbdkffi` multi-language library for the Rust-based 
-[bdk] library from the [Bitcoin Dev Kit] project. The `bdk-ffi-bindgen` package builds a tool for 
-generating the actual language binding code used to access the `libbdkffi` library.
+[bdk] library from the [Bitcoin Dev Kit] project.
 
 Each supported language and the platform(s) it's packaged for has its own directory. The Rust code in this project is in the bdk-ffi directory and is a wrapper around the [bdk] library to expose its APIs in a uniform way using the [mozilla/uniffi-rs] bindings generator for each supported target language.
 
@@ -23,11 +22,19 @@ The below directories (a separate repository in the case of bdk-swift) include i
 | Swift    | iOS, macOS            | [bdk-swift (GitHub)]          | [Readme bdk-swift]     |                       |
 | Python   | linux, macOS, Windows | [bdk-python (PyPI)]           | [Readme bdk-python]    |                       |
 
-## Language bindings generator tool
-Use the `bdk-ffi-bindgen` tool to generate language binding code for the above supported languages. 
-To run `bdk-ffi-bindgen` and see the available options use the command:
+## Minimum Supported Rust Version (MSRV)
+
+This library should compile with any combination of features with Rust 1.61.0.
+
+To build with the MSRV you will need to pin dependencies as follows:
+
 ```shell
-cargo run -p bdk-ffi-bindgen -- --help
+# required for sqlite feature, hashlink 0.8.2 has MSRV 1.61.0
+cargo update -p hashlink --precise "0.8.1"
+# tokio 1.30.0 has MSRV 1.63.0
+cargo update -p tokio --precise "1.29.1"
+# flate2 1.0.27 and up do not work with Rust 1.61.0, but 1.0.26 does
+cargo update -p flate2 --precise "1.0.26"
 ```
 
 ## Contributing
@@ -57,8 +64,8 @@ See the [UniFFI User Guide](https://mozilla.github.io/uniffi-rs/)
 repositories {
     mavenCentral()
 }
-dependencies {
-  implementation("org.bitcoindevkit:bdk-android:<version>")
+dependencies { 
+    implementation("org.bitcoindevkit:bdk-android:<version>")
 }
 ```
 
@@ -68,8 +75,8 @@ dependencies {
 repositories {
     mavenCentral()
 }
-dependencies {
-  implementation("org.bitcoindevkit:bdk-jvm:<version>")
+dependencies { 
+    implementation("org.bitcoindevkit:bdk-jvm:<version>")
 }
 ```
 

api-docs/kotlin/src/main/kotlin/org/bitcoindevkit/bdk.kt

@@ -24,32 +24,54 @@ enum class Network {
  *
  * @property index Child index of this address.
  * @property address Address.
+ * @property keychain Type of keychain.
  *
  * @sample org.bitcoindevkit.addressInfoSample
  */
 data class AddressInfo (
     var index: UInt,
-    var address: String
+    var address: Address,
+    var keychain: KeychainKind
 )
 
 /**
  * The address index selection strategy to use to derive an address from the wallet’s external descriptor.
  *
- * If you’re unsure which one to use, use `AddressIndex.NEW`.
+ * If you’re unsure which one to use, use `AddressIndex.New`.
  *
  * @sample org.bitcoindevkit.addressIndexSample
  */
-enum class AddressIndex {
+sealed class AddressIndex {
     /** Return a new address after incrementing the current descriptor index. */
-    NEW,
+    object New: AddressIndex(),
 
-    /** Return the address for the current descriptor index if it has not been used in a received transaction.
+    /**
+     * Return the address for the current descriptor index if it has not been used in a received transaction.
      * Otherwise return a new address as with `AddressIndex.NEW`. Use with caution, if the wallet
      * has not yet detected an address has been used it could return an already used address.
      * This function is primarily meant for situations where the caller is untrusted;
      * for example when deriving donation addresses on-demand for a public web page.
      */
-    LAST_UNUSED,
+    object LastUnused: AddressIndex(),
+
+    /**
+     * Return the address for a specific descriptor index. Does not change the current descriptor
+     * index used by [AddressIndex.New] and [AddressIndex.LastUsed].
+     * Use with caution, if an index is given that is less than the current descriptor index
+     * then the returned address may have already been used.
+     */
+    data class Peek(val index: UInt): AddressIndex(),
+
+    /**
+     * Return the address for a specific descriptor index and reset the current descriptor index
+     * used by [AddressIndex.New] and [AddressIndex.LastUsed] to this value.
+     * Use with caution, if an index is given that is less than the current descriptor index
+     * then the returned address and subsequent addresses returned by calls to [AddressIndex.New]
+     * and [AddressIndex.LastUsed] may have already been used. Also if the index is reset to a
+     * value earlier than the [Blockchain] stopGap (default is 20) then a
+     * larger stopGap should be used to monitor for all possibly used addresses.
+     */
+    data class Reset(val index: UInt): AddressIndex()
 }
 
 /**
@@ -228,6 +250,7 @@ sealed class BlockchainConfig {
  * @property confirmationTime If the transaction is confirmed, [BlockTime] contains height and timestamp of the block containing the transaction. This property is null for unconfirmed transactions.
  */
 data class TransactionDetails (
+    var transaction?: Transaction,
     var fee: ULong?,
     var received: ULong,
     var sent: ULong,
@@ -248,7 +271,10 @@ class Blockchain(
     config: BlockchainConfig
 ) {
     /** Broadcast a transaction. */
-    fun broadcast(psbt: PartiallySignedBitcoinTransaction) {}
+    fun broadcast(transaction: Transaction) {}
+
+    /** Estimate the fee rate required to confirm a transaction in a given target of blocks. */
+    fun estimateFee(target: ULong): FeeRate {}
 
     /** Get the current height of the blockchain. */
     fun getHeight(): UInt {}
@@ -257,6 +283,70 @@ class Blockchain(
     fun getBlockHash(height: UInt): String {}
 }
 
+/**
+ * A bitcoin transaction.
+ *
+ * @constructor Build a new Bitcoin Transaction.
+ *
+ * @param transactionBytes The transaction bytes, bitcoin consensus encoded.
+ */
+class Transaction(transactionBytes: List<UByte>) {
+    /** Computes the txid. */
+    fun txid(): String {}
+
+    /**
+     * Returns the "weight" of this transaction, as defined by BIP141.
+     *
+     * For transactions with an empty witness, this is simply the consensus-serialized size times four.
+     * For transactions with a witness, this is the non-witness consensus-serialized size multiplied by three
+     * plus the with-witness consensus-serialized size.
+     */
+    fun weight(): ULong {}
+
+    /** Returns the regular byte-wise consensus-serialized size of this transaction. */
+    fun size(): ULong {}
+
+    /**
+     * Returns the "virtual size" (vsize) of this transaction.
+     *
+     * Will be ceil(weight / 4.0). Note this implements the virtual size as per BIP141, which is different to
+     * what is implemented in Bitcoin Core. The computation should be the same for any remotely sane transaction.
+     */
+    fun vsize(): ULong {}
+
+    /** Return the transaction bytes, bitcoin consensus encoded. */
+    fun serialize(): List<UByte> {}
+
+    /** Is this a coin base transaction? */
+    fun isCoinBase(): Boolean {}
+
+    /**
+     * Returns true if the transaction itself opted in to be BIP-125-replaceable (RBF).
+     * This does not cover the case where a transaction becomes replaceable due to ancestors being RBF.
+     */
+    fun isExplicitlyRbf(): Boolean {}
+
+    /** Returns true if this transactions nLockTime is enabled (BIP-65). */
+    fun isLockTimeEnabled(): Boolean {}
+
+    /** The protocol version, is currently expected to be 1 or 2 (BIP 68). */
+    fun version(): Int {}
+
+    /**
+     * Block height or timestamp. Transaction cannot be included in a block until this height/time.
+     * Relevant BIPs
+     *     BIP-65 OP_CHECKLOCKTIMEVERIFY
+     *     BIP-113 Median time-past as endpoint for lock-time calculations
+     */
+    fun lockTime(): UInt {}
+
+    /** List of transaction inputs. */
+    fun input(): List<TxIn> {}
+
+    /** List of transaction outputs. */
+    fun output(): List<TxOut> {}
+}
+
 /**
  * A partially signed bitcoin transaction.
  *
@@ -264,21 +354,24 @@ class Blockchain(
  *
  * @param psbtBase64 The PSBT in base64 format.
  */
-class PartiallySignedBitcoinTransaction(psbtBase64: String) {
+class PartiallySignedTransaction(psbtBase64: String) {
     /** Return the PSBT in string format, using a base64 encoding. */
     fun serialize(): String {}
 
     /** Get the txid of the PSBT. */
     fun txid(): String {}
 
-    /** Return the transaction as bytes. */
-    fun extractTx(): List<UByte>
+    /** Extract the transaction. */
+    fun extractTx(): Transaction {}
 
     /**
      * Combines this PartiallySignedTransaction with another PSBT as described by BIP 174.
      * In accordance with BIP 174 this function is commutative i.e., `A.combine(B) == B.combine(A)`
      */
-    fun combine(other: PartiallySignedBitcoinTransaction): PartiallySignedBitcoinTransaction
+    fun combine(other: PartiallySignedTransaction): PartiallySignedTransaction
+
+    /** Serialize the PSBT data structure as a String of JSON. */
+    fun jsonSerialize(): String
 }
 
 /**
@@ -296,11 +389,29 @@ data class OutPoint (
  * A transaction output, which defines new coins to be created from old ones.
  *
  * @property value The value of the output, in satoshis.
- * @property address The address of the output.
+ * @property scriptPubkey The script which must be satisfied for the output to be spent.
  */
 data class TxOut (
     var value: ULong,
-    var address: String
+    var scriptPubkey: Script
+)
+
+/**
+ * Bitcoin transaction input.
+ *
+ * It contains the location of the previous transaction’s output, that it spends and set of scripts that satisfy its spending conditions.
+ *
+ * @property previousOutput The reference to the previous output that is being used an an input.
+ * @property scriptSig The script which pushes values on the stack which will cause the referenced output’s script to be accepted.
+ * @property sequence The sequence number, which suggests to miners which of two conflicting transactions should be preferred, or 0xFFFFFFFF to ignore this feature. This is generally never used since the miner behaviour cannot be enforced.
+ * @property witness Witness data: an array of byte-arrays. Note that this field is not (de)serialized with the rest of the TxIn in Encodable/Decodable, as it is (de)serialized at the end of the full Transaction. It is (de)serialized with the rest of the TxIn in other (de)serialization routines.
+ *
+ */
+data class TxIn (
+    var previousOutput: OutPoint,
+    var scriptSig: Script,
+    var sequence: UInt,
+    var witness: List<List<UByte>>
 )
 
 /**
@@ -369,14 +480,38 @@ class Wallet(
      */
     fun getAddress(addressIndex: AddressIndex): AddressInfo {}
 
+    /**
+     * Return a derived address using the internal (change) descriptor.
+     * If the wallet doesn't have an internal descriptor it will use the external descriptor.
+     * See [AddressIndex] for available address index selection strategies. If none of the keys
+     * in the descriptor are derivable (i.e. does not end with /\*) then the same address will always
+     * be returned for any [AddressIndex].
+     */
+    fun getInternalAddress(addressIndex: AddressIndex): AddressInfo {}
+
+    /** Return whether or not a script is part of this wallet (either internal or external). */
+    fun isMine(script: Script): Boolean {}
+
     /** Return the wallet's balance, across different categories. See [Balance] for the categories. Note that this method only operates on the internal database, which first needs to be [Wallet.sync] manually. */
     fun getBalance(): Balance {}
 
-    /** Sign a transaction with all the wallet’s signers. */
-    fun sign(psbt: PartiallySignedBitcoinTransaction): Boolean {}
+    /**
+     * Sign a transaction with all the wallet's signers, in the order specified by every signer's
+     * `SignerOrdering`.
+     *
+     * The `SignOptions` can be used to tweak the behavior of the software signers, and the way
+     * the transaction is finalized at the end. Note that it can't be guaranteed that *every*
+     * signers will follow the options, but the "software signers" (WIF keys and `xprv`) defined
+     * in this library will.
+     *
+     * @param psbt PSBT to be signed
+     * @param signOptions signing options
+     * @return true if the PSBT was finalized, or false otherwise
+     */
+    fun sign(psbt: PartiallySignedTransaction, signOptions: SignOptions?): Boolean {}
 
     /** Return the list of transactions made and received by the wallet. Note that this method only operate on the internal database, which first needs to be [Wallet.sync] manually. */
-    fun listTransactions(): List<TransactionDetails> {}
+    fun listTransactions(includeRaw: Boolean): List<TransactionDetails> {}
 
     /** Get the Bitcoin network the wallet is using. */
     fun network(): Network {}
@@ -481,6 +616,29 @@ class TxBuilder() {
     fun finish(wallet: Wallet): TxBuilderResult {}
 }
 
+/**
+ * Options for a software signer.
+ *
+ * Adjust the behavior of our software signers and the way a transaction is finalized.
+ *
+ * @property trustWitnessUtxo Whether the signer should trust the `witness_utxo`, if the `non_witness_utxo` hasn't been provided. Defaults to `false`.
+ * @property assumeHeight Whether the wallet should assume a specific height has been reached when trying to finalize a transaction.
+ * @property allowAllSighashes Whether the signer should use the sighash_type set in the PSBT when signing, no matter what its value is. Defaults to `false`.
+ * @property removePartialSigs Whether to remove partial signatures from the PSBT inputs while finalizing PSBT. Defaults to `true`.
+ * @property tryFinalize Whether to try finalizing the PSBT after the inputs are signed. Defaults to `true`.
+ * @property signWithTapInternalKey Whether we should try to sign a taproot transaction with the taproot internal key or not. This option is ignored if we're signing a non-taproot PSBT. Defaults to `true`.
+ * @property allowGrinding Whether we should grind ECDSA signature to ensure signing with low r or not. Defaults to `true`.
+ */
+data class SignOptions (
+    var trustWitnessUtxo: Boolean,
+    var assumeHeight: UInt?,
+    var allowAllSighashes: Boolean,
+    var removePartialSigs: Boolean,
+    var tryFinalize: Boolean,
+    var signWithTapInternalKey: Boolean,
+    var allowGrinding: Boolean
+)
+
 /**
  * A object holding a ScriptPubKey and an amount.
  *
@@ -627,6 +785,19 @@ class Descriptor(descriptor: String, network: Network) {
      */
     fun newBip84Public(publicKey: DescriptorPublicKey, fingerprint: String, keychain: KeychainKind, network: Network) {}
 
+    /**
+     * BIP86 template. Expands to wpkh(key/86'/{0,1}'/0'/{0,1}/\*)
+     * Since there are hardened derivation steps, this template requires a private derivable key (generally a xprv/tprv).
+     */
+    fun newBip86(secretKey: DescriptorSecretKey, keychain: KeychainKind, network: Network) {}
+
+    /**
+     * BIP86 public template. Expands to wpkh(key/{0,1}/\*)
+     * This assumes that the key used has already been derived with m/86'/0'/0' for Mainnet or m/86'/1'/0' for Testnet.
+     * This template requires the parent fingerprint to populate correctly the metadata of PSBTs.
+     */
+    fun newBip86Public(publicKey: DescriptorPublicKey, fingerprint: String, keychain: KeychainKind, network: Network) {}
+
     /** Return the public version of the output descriptor. */
     fun asString(): String {}
 
@@ -664,14 +835,17 @@ enum class WordCount {
  * @sample org.bitcoindevkit.txBuilderResultSample2
  */
 data class TxBuilderResult (
-    var psbt: PartiallySignedBitcoinTransaction,
+    var psbt: PartiallySignedTransaction,
     var transactionDetails: TransactionDetails
 )
 
 /**
  * A bitcoin script.
  */
-class Script(rawOutputScript: List<UByte>)
+class Script(rawOutputScript: List<UByte>) {
+    /** Return the script as bytes. */
+    fun toBytes(): List<UByte> {}
+}
 
 /**
  * A bitcoin address.
@@ -679,8 +853,62 @@ class Script(rawOutputScript: List<UByte>)
  * @param address The address in string format.
  */
 class Address(address: String) {
+    /** Construct an [`Address`] from an output script. */
+    fun fromScript(script: Script, network: Network): Address {}
+
+    /** Return the Payload */
+    fun payload(): Payload
+
+    /** Return the Network. */
+    fun network(): Network
+
     /** Return the ScriptPubKey. */
     fun scriptPubkey(): Script
+
+    /**
+     * Creates a URI string bitcoin:address optimized to be encoded in QR codes.
+     *
+     * If the address is bech32, both the schema and the address become uppercase. If the address is base58, the schema is lowercase and the address is left mixed case.
+     *
+     * Quoting BIP 173 "inside QR codes uppercase SHOULD be used, as those permit the use of alphanumeric mode, which is 45% more compact than the normal byte mode."
+     */
+    fun toQrUri(): String
+
+    /** Return the address as a string. */
+    fun asString(): String
+}}
+
+/**
+ * The method used to produce an address.
+ */
+sealed class Payload {
+    /** P2PKH address. */
+    data class PubkeyHash(
+        val pubkeyHash: List<UByte>
+    ) : Payload()
+
+    /** P2SH address. */
+    data class ScriptHash(
+        val scriptHash: List<UByte>
+    ) : Payload()
+
+    /** Segwit address. */
+    data class WitnessProgram(
+        val version: WitnessVersion,
+        val program: List<UByte>
+    ) : Payload()
+}
+
+/**
+ * Version of the witness program.
+ *
+ * Helps limit possible versions of the witness according to the specification. If a plain u8 type
+ * was used instead it would mean that the version may be > 16, which would be incorrect.
+ * First byte of scriptPubkey in transaction output for transactions starting with opcodes ranging
+ * from 0 to 16 (inclusive).
+ */
+enum class WitnessVersion {
+    V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, V14, V15, V16
 }
 
 /**

api-docs/kotlin/src/test/kotlin/org/bitcoindevkit/Samples.kt

@@ -72,8 +72,8 @@ fun addressIndexSample() {
         databaseConfig = DatabaseConfig.Memory
     )
 
-    fun getLastUnusedAddress(): AddressInfo {
-        return wallet.getAddress(AddressIndex.LAST_UNUSED)
+    fun peekAddress100(): AddressInfo {
+        return wallet.getAddress(AddressIndex.Peek(100u))
     }
 }
 
@@ -85,13 +85,9 @@ fun addressInfoSample() {
         databaseConfig = DatabaseConfig.Memory
     )
 
-    fun getLastUnusedAddress(): AddressInfo {
-        return wallet.getAddress(AddressIndex.NEW)
-    }
+    val newAddress: AddressInfo = wallet.getAddress(AddressIndex.New)
 
-    val newAddress: AddressInfo = getLastUnusedAddress()
-
-    println("New address at index ${newAddress.index} is ${newAddress.address}")
+    println("New address at index ${newAddress.index} is ${newAddress.address.asString()}")
 }
 
 fun blockchainSample() {
@@ -107,7 +103,16 @@ fun blockchainSample() {
 
     val blockchain: Blockchain = Blockchain(blockchainConfig)
 
-    blockchain.broadcast(signedPsbt)
+    val feeRate: FeeRate = blockchain.estimateFee(3u)
+
+    val (psbt, txDetails) = TxBuilder()
+        .addRecipient(faucetAddress.scriptPubkey(), 1000uL)
+        .feeRate(feeRate.asSatPerVb())
+        .finish(wallet)
+
+    wallet.sign(psbt)
+
+    blockchain.broadcast(psbt)
 }
 
 

bdk-android/README.md

@@ -8,8 +8,8 @@ repositories {
     mavenCentral()
 }
 
-dependencies {
-  implementation("org.bitcoindevkit:bdk-android:<version>")
+dependencies { 
+    implementation("org.bitcoindevkit:bdk-android:<version>")
 }
 ```
 
@@ -19,8 +19,8 @@ import org.bitcoindevkit.*
 
 // ...
 
-val externalDescriptor = "wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/0/*)"
-val internalDescriptor = "wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/1/*)"
+val externalDescriptor = Descriptor("wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/0/*)", Network.TESTNET)
+val internalDescriptor = Descriptor("wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/1/*)", Network.TESTNET)
 
 val databaseConfig = DatabaseConfig.Memory
 
@@ -28,7 +28,7 @@ val blockchainConfig = BlockchainConfig.Electrum(
         ElectrumConfig("ssl://electrum.blockstream.info:60002", null, 5u, null, 10u, true)
     )
 val wallet = Wallet(externalDescriptor, internalDescriptor, Network.TESTNET, databaseConfig, blockchainConfig)
-val newAddress = wallet.getAddress(AddressIndex.LAST_UNUSED)
+val newAddress = wallet.getAddress(AddressIndex.LastUnused)
 ```
 
 ### Snapshot releases
@@ -38,8 +38,8 @@ repositories {
     maven("https://s01.oss.sonatype.org/content/repositories/snapshots/")
 }
 
-dependencies {
-  implementation("org.bitcoindevkit:bdk-android:<version-SNAPSHOT>")
+dependencies { 
+    implementation("org.bitcoindevkit:bdk-android:<version-SNAPSHOT>")
 }
 ```
 
@@ -54,19 +54,23 @@ _Note that Kotlin version `1.6.10` or later is required to build the library._
 ```shell
 git clone https://github.com/bitcoindevkit/bdk-ffi
 ```
-2. Follow the "General" bdk-ffi ["Getting Started (Developer)"] instructions.
-3. If building on macOS install required intel and m1 jvm targets
+2. Follow the "General" bdk-ffi ["Getting Started (Developer)"] instructions. 
+3. Install Rust (note that we are currently building using Rust 1.67.0):
+```shell
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+rustup default 1.67.0
+```
 4. Install required targets
- ```sh
- rustup target add x86_64-linux-android aarch64-linux-android armv7-linux-androideabi
- ```
+```sh
+rustup target add x86_64-linux-android aarch64-linux-android armv7-linux-androideabi
+```
 5. Install Android SDK and Build-Tools for API level 30+
 6. Setup `$ANDROID_SDK_ROOT` and `$ANDROID_NDK_ROOT` path variables (which are required by the
-   build tool), for example (NDK major version 21 is required):
- ```shell
- export ANDROID_SDK_ROOT=~/Android/Sdk
- export ANDROID_NDK_ROOT=$ANDROID_SDK_ROOT/ndk/21.<NDK_VERSION>
- ```
+   build tool), for example (note that currently, NDK version 21.4.7075529 is required):
+```shell
+export ANDROID_SDK_ROOT=~/Android/Sdk
+export ANDROID_NDK_ROOT=$ANDROID_SDK_ROOT/ndk/21.4.7075529
+```
 7. Build kotlin bindings
  ```sh
  # build Android library
@@ -96,6 +100,7 @@ and use the `publishToMavenLocal` task without excluding the signing task:
 ```
 
 ## Known issues
+### JNA dependency
 Depending on the JVM version you use, you might not have the JNA dependency on your classpath. The exception thrown will be
 ```shell
 class file for com.sun.jna.Pointer not found
@@ -108,5 +113,8 @@ dependencies {
 }
 ```
 
+### x86 emulators
+For some older versions of macOS, Android Studio will recommend users install the x86 version of the emulator by default. This will not work with the bdk-android library, as we do not support 32-bit architectures. Make sure you install an x86_64 emulator to work with bdk-android.
+
 [`bdk`]: https://github.com/bitcoindevkit/bdk
 [`bdk-ffi`]: https://github.com/bitcoindevkit/bdk-ffi

bdk-android/gradle.properties

@@ -2,4 +2,4 @@ org.gradle.jvmargs=-Xmx1536m
 android.useAndroidX=true
 android.enableJetifier=true
 kotlin.code.style=official
-libraryVersion=0.26.0-SNAPSHOT
+libraryVersion=0.31.1

bdk-android/lib/src/androidTest/kotlin/org/bitcoindevkit/AndroidLibTest.kt

@@ -54,7 +54,7 @@ class AndroidLibTest {
     @Test
     fun memoryWalletNewAddress() {
         val wallet = Wallet(descriptor, null, Network.TESTNET, databaseConfig)
-        val address = wallet.getAddress(AddressIndex.NEW).address
+        val address = wallet.getAddress(AddressIndex.New).address.asString()
         assertEquals("tb1qzg4mckdh50nwdm9hkzq06528rsu73hjxxzem3e", address)
     }
 

bdk-android/plugins/src/main/kotlin/org/bitcoindevkit/plugins/UniFfiAndroidPlugin.kt

@@ -21,8 +21,7 @@ internal class UniFfiAndroidPlugin : Plugin<Project> {
         val buildAndroidAarch64Binary by tasks.register<Exec>("buildAndroidAarch64Binary") {
 
             workingDir("${projectDir}/../../bdk-ffi")
-            val cargoArgs: MutableList<String> =
-                mutableListOf("build", "--profile", "release-smaller", "--target", "aarch64-linux-android")
+            val cargoArgs: List<String> = listOf("build", "--profile", "release-smaller", "--target", "aarch64-linux-android")
 
             executable("cargo")
             args(cargoArgs)
@@ -36,10 +35,9 @@ internal class UniFfiAndroidPlugin : Plugin<Project> {
 
             environment(
                 // add build toolchain to PATH
-                Pair("PATH",
-                    "${System.getenv("PATH")}:${System.getenv("ANDROID_NDK_ROOT")}/toolchains/llvm/prebuilt/$llvmArchPath/bin"),
-
-                Pair("CFLAGS", "-D__ANDROID_API__=21"),
+                Pair("PATH", "${System.getenv("PATH")}:${System.getenv("ANDROID_NDK_ROOT")}/toolchains/llvm/prebuilt/$llvmArchPath/bin"),
+                Pair("CFLAGS", "-D__ANDROID_MIN_SDK_VERSION__=21"),
+                Pair("AR", "llvm-ar"),
                 Pair("CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER", "aarch64-linux-android21-clang"),
                 Pair("CC", "aarch64-linux-android21-clang")
             )
@@ -53,8 +51,7 @@ internal class UniFfiAndroidPlugin : Plugin<Project> {
         val buildAndroidX86_64Binary by tasks.register<Exec>("buildAndroidX86_64Binary") {
 
             workingDir("${project.projectDir}/../../bdk-ffi")
-            val cargoArgs: MutableList<String> =
-                mutableListOf("build", "--profile", "release-smaller", "--target", "x86_64-linux-android")
+            val cargoArgs: List<String> = listOf("build", "--profile", "release-smaller", "--target", "x86_64-linux-android")
 
             executable("cargo")
             args(cargoArgs)
@@ -68,10 +65,9 @@ internal class UniFfiAndroidPlugin : Plugin<Project> {
 
             environment(
                 // add build toolchain to PATH
-                Pair("PATH",
-                    "${System.getenv("PATH")}:${System.getenv("ANDROID_NDK_ROOT")}/toolchains/llvm/prebuilt/$llvmArchPath/bin"),
-
-                Pair("CFLAGS", "-D__ANDROID_API__=21"),
+                Pair("PATH", "${System.getenv("PATH")}:${System.getenv("ANDROID_NDK_ROOT")}/toolchains/llvm/prebuilt/$llvmArchPath/bin"),
+                Pair("CFLAGS", "-D__ANDROID_MIN_SDK_VERSION__=21"),
+                Pair("AR", "llvm-ar"),
                 Pair("CARGO_TARGET_X86_64_LINUX_ANDROID_LINKER", "x86_64-linux-android21-clang"),
                 Pair("CC", "x86_64-linux-android21-clang")
             )
@@ -85,8 +81,7 @@ internal class UniFfiAndroidPlugin : Plugin<Project> {
         val buildAndroidArmv7Binary by tasks.register<Exec>("buildAndroidArmv7Binary") {
 
             workingDir("${project.projectDir}/../../bdk-ffi")
-            val cargoArgs: MutableList<String> =
-                mutableListOf("build", "--profile", "release-smaller", "--target", "armv7-linux-androideabi")
+            val cargoArgs: List<String> = listOf("build", "--profile", "release-smaller", "--target", "armv7-linux-androideabi")
 
             executable("cargo")
             args(cargoArgs)
@@ -100,12 +95,10 @@ internal class UniFfiAndroidPlugin : Plugin<Project> {
 
             environment(
                 // add build toolchain to PATH
-                Pair("PATH",
-                    "${System.getenv("PATH")}:${System.getenv("ANDROID_NDK_ROOT")}/toolchains/llvm/prebuilt/$llvmArchPath/bin"),
-
-                Pair("CFLAGS", "-D__ANDROID_API__=21"),
-                Pair("CARGO_TARGET_ARMV7_LINUX_ANDROIDEABI_LINKER",
-                    "armv7a-linux-androideabi21-clang"),
+                Pair("PATH", "${System.getenv("PATH")}:${System.getenv("ANDROID_NDK_ROOT")}/toolchains/llvm/prebuilt/$llvmArchPath/bin"),
+                Pair("CFLAGS", "-D__ANDROID_MIN_SDK_VERSION__=21"),
+                Pair("AR", "llvm-ar"),
+                Pair("CARGO_TARGET_ARMV7_LINUX_ANDROIDEABI_LINKER", "armv7a-linux-androideabi21-clang"),
                 Pair("CC", "armv7a-linux-androideabi21-clang")
             )
 
@@ -145,17 +138,10 @@ internal class UniFfiAndroidPlugin : Plugin<Project> {
             dependsOn(moveNativeAndroidLibs)
 
             workingDir("${project.projectDir}/../../bdk-ffi")
+            val cargoArgs: List<String> = listOf("run", "--bin", "uniffi-bindgen", "generate", "src/bdk.udl", "--language", "kotlin", "--out-dir", "../bdk-android/lib/src/main/kotlin", "--no-format")
+
             executable("cargo")
-            args(
-                "run",
-                "--package",
-                "bdk-ffi-bindgen",
-                "--",
-                "--language",
-                "kotlin",
-                "--out-dir",
-                "../bdk-android/lib/src/main/kotlin"
-            )
+            args(cargoArgs)
 
             doLast {
                 println("Android bindings file successfully created")

bdk-ffi-bindgen/Cargo.toml

@@ -1,10 +0,0 @@
-[package]
-name = "bdk-ffi-bindgen"
-version = "0.2.0"
-edition = "2021"
-
-[dependencies]
-anyhow = "1.0.45" # remove after upgrading to next version of uniffi
-structopt = "0.3"
-uniffi_bindgen = "0.21.0"
-camino = "1.0.9"

bdk-ffi-bindgen/src/main.rs

@@ -1,138 +0,0 @@
-use camino::Utf8Path;
-use std::fmt;
-use std::path::{Path, PathBuf};
-use std::str::FromStr;
-use structopt::StructOpt;
-
-#[derive(Debug, Eq, PartialEq)]
-pub enum Language {
-    Kotlin,
-    Python,
-    Swift,
-}
-
-impl fmt::Display for Language {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        match self {
-            Language::Kotlin => write!(f, "kotlin"),
-            Language::Swift => write!(f, "swift"),
-            Language::Python => write!(f, "python"),
-        }
-    }
-}
-
-#[derive(Debug)]
-pub enum Error {
-    UnsupportedLanguage,
-}
-
-impl fmt::Display for Error {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "{:?}", self)
-    }
-}
-
-impl FromStr for Language {
-    type Err = Error;
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-        match s {
-            "kotlin" => Ok(Language::Kotlin),
-            "python" => Ok(Language::Python),
-            "swift" => Ok(Language::Swift),
-            _ => Err(Error::UnsupportedLanguage),
-        }
-    }
-}
-
-fn generate_bindings(opt: &Opt) -> anyhow::Result<(), anyhow::Error> {
-    let path: &Utf8Path = Utf8Path::from_path(&opt.udl_file).unwrap();
-    let out_dir: &Utf8Path = Utf8Path::from_path(&opt.out_dir).unwrap();
-    uniffi_bindgen::generate_bindings(
-        path,
-        None,
-        vec![opt.language.to_string().as_str()],
-        Some(out_dir),
-        None,
-        false,
-    )?;
-
-    Ok(())
-}
-
-fn fixup_python_lib_path(
-    out_dir: &Path,
-    lib_name: &Path,
-) -> Result<(), Box<dyn std::error::Error>> {
-    use std::fs;
-    use std::io::Write;
-
-    const LOAD_INDIRECT_DEF: &str = "def loadIndirect():";
-
-    let bindings_file = out_dir.join("bdk.py");
-    let mut data = fs::read_to_string(&bindings_file)?;
-
-    let pos = data
-        .find(LOAD_INDIRECT_DEF)
-        .unwrap_or_else(|| panic!("loadIndirect not found in `{}`", bindings_file.display()));
-    let range = pos..pos + LOAD_INDIRECT_DEF.len();
-
-    let replacement = format!(
-        r#"
-def loadIndirect():
-    import glob
-    return getattr(ctypes.cdll, glob.glob(os.path.join(os.path.dirname(os.path.abspath(__file__)), '{}.*'))[0])
-
-def _loadIndirectOld():"#,
-        &lib_name.to_str().expect("lib name")
-    );
-    data.replace_range(range, &replacement);
-
-    let mut file = fs::OpenOptions::new()
-        .write(true)
-        .truncate(true)
-        .open(&bindings_file)?;
-    file.write_all(data.as_bytes())?;
-
-    Ok(())
-}
-
-#[derive(Debug, StructOpt)]
-#[structopt(
-    name = "bdk-ffi-bindgen",
-    about = "A tool to generate bdk-ffi language bindings"
-)]
-struct Opt {
-    /// UDL file
-    #[structopt(env = "BDKFFI_BINDGEN_UDL", short, long, default_value("src/bdk.udl"), parse(try_from_str = PathBuf::from_str))]
-    udl_file: PathBuf,
-
-    /// Language to generate bindings for
-    #[structopt(env = "BDKFFI_BINDGEN_LANGUAGE", short, long, possible_values(&["kotlin","swift","python"]), parse(try_from_str = Language::from_str))]
-    language: Language,
-
-    /// Output directory to put generated language bindings
-    #[structopt(env = "BDKFFI_BINDGEN_OUTPUT_DIR", short, long, parse(try_from_str = PathBuf::from_str))]
-    out_dir: PathBuf,
-
-    /// Python fix up lib path
-    #[structopt(env = "BDKFFI_BINDGEN_PYTHON_FIXUP_PATH", short, long, parse(try_from_str = PathBuf::from_str))]
-    python_fixup_path: Option<PathBuf>,
-}
-
-fn main() -> Result<(), Box<dyn std::error::Error>> {
-    let opt = Opt::from_args();
-
-    println!("Input UDL file is {:?}", opt.udl_file);
-    println!("Chosen language is {}", opt.language);
-    println!("Output directory is {:?}", opt.out_dir);
-
-    generate_bindings(&opt)?;
-
-    if opt.language == Language::Python {
-        if let Some(path) = opt.python_fixup_path {
-            println!("Fixing up python lib path, {:?}", &path);
-            fixup_python_lib_path(&opt.out_dir, &path)?;
-        }
-    }
-    Ok(())
-}

bdk-ffi/Cargo.toml

@@ -1,21 +1,28 @@
 [package]
 name = "bdk-ffi"
-version = "0.26.0"
+version = "0.31.1"
 authors = ["Steve Myers <steve@notmandatory.org>", "Sudarsan Balaji <sudarsan.balaji@artfuldev.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
 
 [lib]
-crate-type = ["staticlib", "cdylib"]
+crate-type = ["lib", "staticlib", "cdylib"]
 name = "bdkffi"
 
+[[bin]]
+name = "uniffi-bindgen"
+path = "uniffi-bindgen.rs"
+
+[features]
+default = ["uniffi/cli"]
+
 [dependencies]
-bdk = { version = "0.26", features = ["all-keys", "use-esplora-ureq", "sqlite-bundled", "rpc"] }
-uniffi_macros = { version = "0.21.0", features = ["builtin-bindgen"] }
-uniffi = { version = "0.21.0", features = ["builtin-bindgen"] }
+bdk = { version = "0.29.0", features = ["all-keys", "use-esplora-ureq", "sqlite-bundled", "rpc"] }
+uniffi = { version = "=0.23.0" }
 
 [build-dependencies]
-uniffi_build = { version = "0.21.0", features = ["builtin-bindgen"] }
+uniffi = { version = "=0.23.0", features = ["build"] }
 
 [dev-dependencies]
+uniffi = { version = "=0.23.0", features = ["bindgen-tests"] }
 assert_matches = "1.5.0"

bdk-ffi/build.rs

@@ -1,3 +1,3 @@
 fn main() {
-    uniffi_build::generate_scaffolding("src/bdk.udl").unwrap();
+    uniffi::generate_scaffolding("./src/bdk.udl").unwrap();
 }

bdk-ffi/src/bdk.udl

@@ -46,16 +46,21 @@ enum BdkError {
   "Sled",
   "Rusqlite",
   "Rpc",
+  "HardenedIndex"
 };
 
 dictionary AddressInfo {
   u32 index;
-  string address;
+  Address address;
+  KeychainKind keychain;
 };
 
-enum AddressIndex {
-  "New",
-  "LastUnused",
+[Enum]
+interface AddressIndex {
+  New();
+  LastUnused();
+  Peek(u32 index);
+  Reset(u32 index);
 };
 
 enum Network {
@@ -91,6 +96,7 @@ interface DatabaseConfig {
 };
 
 dictionary TransactionDetails {
+  Transaction? transaction;
   u64? fee;
   u64 received;
   u64 sent;
@@ -162,7 +168,10 @@ interface Blockchain {
   constructor(BlockchainConfig config);
 
   [Throws=BdkError]
-  void broadcast([ByRef] PartiallySignedTransaction psbt);
+  void broadcast([ByRef] Transaction transaction);
+
+  [Throws=BdkError]
+  FeeRate estimate_fee(u64 target);
 
   [Throws=BdkError]
   u32 get_height();
@@ -180,9 +189,16 @@ dictionary OutPoint {
   u32 vout;
 };
 
+dictionary TxIn {
+  OutPoint previous_output;
+  Script script_sig;
+  u32 sequence;
+  sequence<sequence<u8>> witness;
+};
+
 dictionary TxOut {
   u64 value;
-  string address;
+  Script script_pubkey;
 };
 
 enum KeychainKind {
@@ -206,25 +222,31 @@ interface Wallet {
   [Throws=BdkError]
   constructor(Descriptor descriptor, Descriptor? change_descriptor, Network network, DatabaseConfig database_config);
 
+  Network network();
+
   [Throws=BdkError]
   AddressInfo get_address(AddressIndex address_index);
 
+  [Throws=BdkError]
+  AddressInfo get_internal_address(AddressIndex address_index);
+
+  [Throws=BdkError]
+  boolean is_mine(Script script);
+
+  [Throws=BdkError]
+  sequence<LocalUtxo> list_unspent();
+
+  [Throws=BdkError]
+  sequence<TransactionDetails> list_transactions(boolean include_raw);
+
   [Throws=BdkError]
   Balance get_balance();
 
   [Throws=BdkError]
-  boolean sign([ByRef] PartiallySignedTransaction psbt);
-
-  [Throws=BdkError]
-  sequence<TransactionDetails> list_transactions();
-
-  Network network();
+  boolean sign([ByRef] PartiallySignedTransaction psbt, SignOptions? sign_options);
 
   [Throws=BdkError]
   void sync([ByRef] Blockchain blockchain, Progress? progress);
-
-  [Throws=BdkError]
-  sequence<LocalUtxo> list_unspent();
 };
 
 interface FeeRate {
@@ -234,6 +256,45 @@ interface FeeRate {
   float as_sat_per_vb();
 };
 
+dictionary SignOptions {
+  boolean trust_witness_utxo;
+  u32? assume_height;
+  boolean allow_all_sighashes;
+  boolean remove_partial_sigs;
+  boolean try_finalize;
+  boolean sign_with_tap_internal_key;
+  boolean allow_grinding;
+};
+
+interface Transaction {
+  [Throws=BdkError]
+  constructor(sequence<u8> transaction_bytes);
+
+  string txid();
+
+  u64 weight();
+
+  u64 size();
+
+  u64 vsize();
+
+  sequence<u8> serialize();
+
+  boolean is_coin_base();
+
+  boolean is_explicitly_rbf();
+
+  boolean is_lock_time_enabled();
+
+  i32 version();
+
+  u32 lock_time();
+
+  sequence<TxIn> input();
+
+  sequence<TxOut> output();
+};
+
 interface PartiallySignedTransaction {
   [Throws=BdkError]
   constructor(string psbt_base64);
@@ -242,7 +303,7 @@ interface PartiallySignedTransaction {
 
   string txid();
 
-  sequence<u8> extract_tx();
+  Transaction extract_tx();
 
   [Throws=BdkError]
   PartiallySignedTransaction combine(PartiallySignedTransaction other);
@@ -250,6 +311,8 @@ interface PartiallySignedTransaction {
   u64? fee_amount();
 
   FeeRate? fee_rate();
+
+  string json_serialize();
 };
 
 dictionary TxBuilderResult {
@@ -299,7 +362,7 @@ interface TxBuilder {
 interface BumpFeeTxBuilder {
   constructor(string txid, float new_fee_rate);
 
-  BumpFeeTxBuilder allow_shrinking(string address);
+  BumpFeeTxBuilder allow_shrinking(Script script_pubkey);
 
   BumpFeeTxBuilder enable_rbf();
 
@@ -380,6 +443,12 @@ interface Descriptor {
   [Name=new_bip84_public]
   constructor(DescriptorPublicKey public_key, string fingerprint, KeychainKind keychain, Network network);
 
+  [Name=new_bip86]
+  constructor(DescriptorSecretKey secret_key, KeychainKind keychain, Network network);
+
+  [Name=new_bip86_public]
+  constructor(DescriptorPublicKey public_key, string fingerprint, KeychainKind keychain, Network network);
+
   string as_string();
 
   string as_string_private();
@@ -387,11 +456,55 @@ interface Descriptor {
 
 interface Address {
   [Throws=BdkError]
-  constructor(string address);
+  constructor(string address, Network network);
+
+  [Name=from_script, Throws=BdkError]
+  constructor(Script script, Network network);
+
+  Payload payload();
+
+  Network network();
 
   Script script_pubkey();
+
+  string to_qr_uri();
+
+  boolean is_valid_for_network(Network network);
+
+  string as_string();
+};
+
+[Enum]
+interface Payload {
+  PubkeyHash(string pubkey_hash);
+
+  ScriptHash(string script_hash);
+
+  WitnessProgram(WitnessVersion version, sequence<u8> program);
+};
+
+enum WitnessVersion {
+  "V0",
+  "V1",
+  "V2",
+  "V3",
+  "V4",
+  "V5",
+  "V6",
+  "V7",
+  "V8",
+  "V9",
+  "V10",
+  "V11",
+  "V12",
+  "V13",
+  "V14",
+  "V15",
+  "V16"
 };
 
 interface Script {
   constructor(sequence<u8> raw_output_script);
+
+  sequence<u8> to_bytes();
 };

bdk-ffi/src/blockchain.rs

@@ -0,0 +1,201 @@
+// use crate::BlockchainConfig;
+use crate::Network;
+use crate::{BdkError, Transaction};
+use bdk::blockchain::any::{AnyBlockchain, AnyBlockchainConfig};
+use bdk::blockchain::rpc::Auth as BdkAuth;
+use bdk::blockchain::rpc::RpcSyncParams as BdkRpcSyncParams;
+use bdk::blockchain::Blockchain as BdkBlockchain;
+use bdk::blockchain::GetBlockHash;
+use bdk::blockchain::GetHeight;
+use bdk::blockchain::{
+    electrum::ElectrumBlockchainConfig, esplora::EsploraBlockchainConfig,
+    rpc::RpcConfig as BdkRpcConfig, ConfigurableBlockchain,
+};
+use bdk::FeeRate;
+use std::convert::{From, TryFrom};
+use std::path::PathBuf;
+use std::sync::{Arc, Mutex, MutexGuard};
+
+pub(crate) struct Blockchain {
+    inner_mutex: Mutex<AnyBlockchain>,
+}
+
+impl Blockchain {
+    pub(crate) fn new(blockchain_config: BlockchainConfig) -> Result<Self, BdkError> {
+        let any_blockchain_config = match blockchain_config {
+            BlockchainConfig::Electrum { config } => {
+                AnyBlockchainConfig::Electrum(ElectrumBlockchainConfig {
+                    retry: config.retry,
+                    socks5: config.socks5,
+                    timeout: config.timeout,
+                    url: config.url,
+                    stop_gap: usize::try_from(config.stop_gap).unwrap(),
+                    validate_domain: config.validate_domain,
+                })
+            }
+            BlockchainConfig::Esplora { config } => {
+                AnyBlockchainConfig::Esplora(EsploraBlockchainConfig {
+                    base_url: config.base_url,
+                    proxy: config.proxy,
+                    concurrency: config.concurrency,
+                    stop_gap: usize::try_from(config.stop_gap).unwrap(),
+                    timeout: config.timeout,
+                })
+            }
+            BlockchainConfig::Rpc { config } => AnyBlockchainConfig::Rpc(BdkRpcConfig {
+                url: config.url,
+                auth: config.auth.into(),
+                network: config.network.into(),
+                wallet_name: config.wallet_name,
+                sync_params: config.sync_params.map(|p| p.into()),
+            }),
+        };
+        let blockchain = AnyBlockchain::from_config(&any_blockchain_config)?;
+        Ok(Self {
+            inner_mutex: Mutex::new(blockchain),
+        })
+    }
+
+    pub(crate) fn get_blockchain(&self) -> MutexGuard<AnyBlockchain> {
+        self.inner_mutex.lock().expect("blockchain")
+    }
+
+    pub(crate) fn broadcast(&self, transaction: &Transaction) -> Result<(), BdkError> {
+        let tx = &transaction.inner;
+        self.get_blockchain().broadcast(tx)
+    }
+
+    pub(crate) fn estimate_fee(&self, target: u64) -> Result<Arc<FeeRate>, BdkError> {
+        let result: Result<FeeRate, bdk::Error> =
+            self.get_blockchain().estimate_fee(target as usize);
+        result.map(Arc::new)
+    }
+
+    pub(crate) fn get_height(&self) -> Result<u32, BdkError> {
+        self.get_blockchain().get_height()
+    }
+
+    pub(crate) fn get_block_hash(&self, height: u32) -> Result<String, BdkError> {
+        self.get_blockchain()
+            .get_block_hash(u64::from(height))
+            .map(|hash| hash.to_string())
+    }
+}
+
+/// Configuration for an ElectrumBlockchain
+pub struct ElectrumConfig {
+    /// URL of the Electrum server (such as ElectrumX, Esplora, BWT) may start with ssl:// or tcp:// and include a port
+    /// e.g. ssl://electrum.blockstream.info:60002
+    pub url: String,
+    /// URL of the socks5 proxy server or a Tor service
+    pub socks5: Option<String>,
+    /// Request retry count
+    pub retry: u8,
+    /// Request timeout (seconds)
+    pub timeout: Option<u8>,
+    /// Stop searching addresses for transactions after finding an unused gap of this length
+    pub stop_gap: u64,
+    /// Validate the domain when using SSL
+    pub validate_domain: bool,
+}
+
+/// Configuration for an EsploraBlockchain
+pub struct EsploraConfig {
+    /// Base URL of the esplora service
+    /// e.g. https://blockstream.info/api/
+    pub base_url: String,
+    /// Optional URL of the proxy to use to make requests to the Esplora server
+    /// The string should be formatted as: <protocol>://<user>:<password>@host:<port>.
+    /// Note that the format of this value and the supported protocols change slightly between the
+    /// sync version of esplora (using ureq) and the async version (using reqwest). For more
+    /// details check with the documentation of the two crates. Both of them are compiled with
+    /// the socks feature enabled.
+    /// The proxy is ignored when targeting wasm32.
+    pub proxy: Option<String>,
+    /// Number of parallel requests sent to the esplora service (default: 4)
+    pub concurrency: Option<u8>,
+    /// Stop searching addresses for transactions after finding an unused gap of this length.
+    pub stop_gap: u64,
+    /// Socket timeout.
+    pub timeout: Option<u64>,
+}
+
+pub enum Auth {
+    /// No authentication
+    None,
+    /// Authentication with username and password, usually [Auth::Cookie] should be preferred
+    UserPass {
+        /// Username
+        username: String,
+        /// Password
+        password: String,
+    },
+    /// Authentication with a cookie file
+    Cookie {
+        /// Cookie file
+        file: String,
+    },
+}
+
+impl From<Auth> for BdkAuth {
+    fn from(auth: Auth) -> Self {
+        match auth {
+            Auth::None => BdkAuth::None,
+            Auth::UserPass { username, password } => BdkAuth::UserPass { username, password },
+            Auth::Cookie { file } => BdkAuth::Cookie {
+                file: PathBuf::from(file),
+            },
+        }
+    }
+}
+
+/// Sync parameters for Bitcoin Core RPC.
+///
+/// In general, BDK tries to sync `scriptPubKey`s cached in `Database` with
+/// `scriptPubKey`s imported in the Bitcoin Core Wallet. These parameters are used for determining
+/// how the `importdescriptors` RPC calls are to be made.
+pub struct RpcSyncParams {
+    /// The minimum number of scripts to scan for on initial sync.
+    pub start_script_count: u64,
+    /// Time in unix seconds in which initial sync will start scanning from (0 to start from genesis).
+    pub start_time: u64,
+    /// Forces every sync to use `start_time` as import timestamp.
+    pub force_start_time: bool,
+    /// RPC poll rate (in seconds) to get state updates.
+    pub poll_rate_sec: u64,
+}
+
+impl From<RpcSyncParams> for BdkRpcSyncParams {
+    fn from(params: RpcSyncParams) -> Self {
+        BdkRpcSyncParams {
+            start_script_count: params.start_script_count as usize,
+            start_time: params.start_time,
+            force_start_time: params.force_start_time,
+            poll_rate_sec: params.poll_rate_sec,
+        }
+    }
+}
+
+/// RpcBlockchain configuration options
+pub struct RpcConfig {
+    /// The bitcoin node url
+    pub url: String,
+    /// The bitcoin node authentication mechanism
+    pub auth: Auth,
+    /// The network we are using (it will be checked the bitcoin node network matches this)
+    pub network: Network,
+    /// The wallet name in the bitcoin node, consider using [crate::wallet::wallet_name_from_descriptor] for this
+    pub wallet_name: String,
+    /// Sync parameters
+    pub sync_params: Option<RpcSyncParams>,
+}
+
+/// Type that can contain any of the blockchain configurations defined by the library.
+pub enum BlockchainConfig {
+    /// Electrum client
+    Electrum { config: ElectrumConfig },
+    /// Esplora client
+    Esplora { config: EsploraConfig },
+    /// Bitcoin Core RPC client
+    Rpc { config: RpcConfig },
+}

bdk-ffi/src/database.rs

@@ -0,0 +1,14 @@
+use bdk::database::any::{SledDbConfiguration, SqliteDbConfiguration};
+
+/// Type that can contain any of the database configurations defined by the library
+/// This allows storing a single configuration that can be loaded into an AnyDatabaseConfig
+/// instance. Wallets that plan to offer users the ability to switch blockchain backend at runtime
+/// will find this particularly useful.
+pub enum DatabaseConfig {
+    /// Memory database has no config
+    Memory,
+    /// Simple key-value embedded database based on sled
+    Sled { config: SledDbConfiguration },
+    /// Sqlite embedded database using rusqlite
+    Sqlite { config: SqliteDbConfiguration },
+}

bdk-ffi/src/descriptor.rs

@@ -0,0 +1,440 @@
+use crate::Network;
+use crate::{BdkError, DescriptorPublicKey, DescriptorSecretKey};
+use bdk::bitcoin::bip32::Fingerprint;
+use bdk::bitcoin::secp256k1::Secp256k1;
+use bdk::descriptor::{ExtendedDescriptor, IntoWalletDescriptor};
+use bdk::keys::{
+    DescriptorPublicKey as BdkDescriptorPublicKey, DescriptorSecretKey as BdkDescriptorSecretKey,
+    KeyMap,
+};
+use bdk::template::{
+    Bip44, Bip44Public, Bip49, Bip49Public, Bip84, Bip84Public, Bip86, Bip86Public,
+    DescriptorTemplate,
+};
+use bdk::KeychainKind;
+use std::str::FromStr;
+use std::sync::Arc;
+
+#[derive(Debug)]
+pub(crate) struct Descriptor {
+    pub(crate) extended_descriptor: ExtendedDescriptor,
+    pub(crate) key_map: KeyMap,
+}
+
+impl Descriptor {
+    pub(crate) fn new(descriptor: String, network: Network) -> Result<Self, BdkError> {
+        let secp = Secp256k1::new();
+        let (extended_descriptor, key_map) =
+            descriptor.into_wallet_descriptor(&secp, network.into())?;
+        Ok(Self {
+            extended_descriptor,
+            key_map,
+        })
+    }
+
+    pub(crate) fn new_bip44(
+        secret_key: Arc<DescriptorSecretKey>,
+        keychain_kind: KeychainKind,
+        network: Network,
+    ) -> Self {
+        let derivable_key = &secret_key.inner;
+
+        match derivable_key {
+            BdkDescriptorSecretKey::XPrv(descriptor_x_key) => {
+                let derivable_key = descriptor_x_key.xkey;
+                let (extended_descriptor, key_map, _) = Bip44(derivable_key, keychain_kind)
+                    .build(network.into())
+                    .unwrap();
+                Self {
+                    extended_descriptor,
+                    key_map,
+                }
+            }
+            BdkDescriptorSecretKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorSecretKey::MultiXPrv(_) => {
+                unreachable!()
+            }
+        }
+    }
+
+    pub(crate) fn new_bip44_public(
+        public_key: Arc<DescriptorPublicKey>,
+        fingerprint: String,
+        keychain_kind: KeychainKind,
+        network: Network,
+    ) -> Self {
+        let fingerprint = Fingerprint::from_str(fingerprint.as_str()).unwrap();
+        let derivable_key = &public_key.inner;
+
+        match derivable_key {
+            BdkDescriptorPublicKey::XPub(descriptor_x_key) => {
+                let derivable_key = descriptor_x_key.xkey;
+                let (extended_descriptor, key_map, _) =
+                    Bip44Public(derivable_key, fingerprint, keychain_kind)
+                        .build(network.into())
+                        .unwrap();
+
+                Self {
+                    extended_descriptor,
+                    key_map,
+                }
+            }
+            BdkDescriptorPublicKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorPublicKey::MultiXPub(_) => {
+                unreachable!()
+            }
+        }
+    }
+
+    pub(crate) fn new_bip49(
+        secret_key: Arc<DescriptorSecretKey>,
+        keychain_kind: KeychainKind,
+        network: Network,
+    ) -> Self {
+        let derivable_key = &secret_key.inner;
+
+        match derivable_key {
+            BdkDescriptorSecretKey::XPrv(descriptor_x_key) => {
+                let derivable_key = descriptor_x_key.xkey;
+                let (extended_descriptor, key_map, _) = Bip49(derivable_key, keychain_kind)
+                    .build(network.into())
+                    .unwrap();
+                Self {
+                    extended_descriptor,
+                    key_map,
+                }
+            }
+            BdkDescriptorSecretKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorSecretKey::MultiXPrv(_) => {
+                unreachable!()
+            }
+        }
+    }
+
+    pub(crate) fn new_bip49_public(
+        public_key: Arc<DescriptorPublicKey>,
+        fingerprint: String,
+        keychain_kind: KeychainKind,
+        network: Network,
+    ) -> Self {
+        let fingerprint = Fingerprint::from_str(fingerprint.as_str()).unwrap();
+        let derivable_key = &public_key.inner;
+
+        match derivable_key {
+            BdkDescriptorPublicKey::XPub(descriptor_x_key) => {
+                let derivable_key = descriptor_x_key.xkey;
+                let (extended_descriptor, key_map, _) =
+                    Bip49Public(derivable_key, fingerprint, keychain_kind)
+                        .build(network.into())
+                        .unwrap();
+
+                Self {
+                    extended_descriptor,
+                    key_map,
+                }
+            }
+            BdkDescriptorPublicKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorPublicKey::MultiXPub(_) => {
+                unreachable!()
+            }
+        }
+    }
+
+    pub(crate) fn new_bip84(
+        secret_key: Arc<DescriptorSecretKey>,
+        keychain_kind: KeychainKind,
+        network: Network,
+    ) -> Self {
+        let derivable_key = &secret_key.inner;
+
+        match derivable_key {
+            BdkDescriptorSecretKey::XPrv(descriptor_x_key) => {
+                let derivable_key = descriptor_x_key.xkey;
+                let (extended_descriptor, key_map, _) = Bip84(derivable_key, keychain_kind)
+                    .build(network.into())
+                    .unwrap();
+                Self {
+                    extended_descriptor,
+                    key_map,
+                }
+            }
+            BdkDescriptorSecretKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorSecretKey::MultiXPrv(_) => {
+                unreachable!()
+            }
+        }
+    }
+
+    pub(crate) fn new_bip84_public(
+        public_key: Arc<DescriptorPublicKey>,
+        fingerprint: String,
+        keychain_kind: KeychainKind,
+        network: Network,
+    ) -> Self {
+        let fingerprint = Fingerprint::from_str(fingerprint.as_str()).unwrap();
+        let derivable_key = &public_key.inner;
+
+        match derivable_key {
+            BdkDescriptorPublicKey::XPub(descriptor_x_key) => {
+                let derivable_key = descriptor_x_key.xkey;
+                let (extended_descriptor, key_map, _) =
+                    Bip84Public(derivable_key, fingerprint, keychain_kind)
+                        .build(network.into())
+                        .unwrap();
+
+                Self {
+                    extended_descriptor,
+                    key_map,
+                }
+            }
+            BdkDescriptorPublicKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorPublicKey::MultiXPub(_) => {
+                unreachable!()
+            }
+        }
+    }
+
+    pub(crate) fn new_bip86(
+        secret_key: Arc<DescriptorSecretKey>,
+        keychain_kind: KeychainKind,
+        network: Network,
+    ) -> Self {
+        let derivable_key = &secret_key.inner;
+
+        match derivable_key {
+            BdkDescriptorSecretKey::XPrv(descriptor_x_key) => {
+                let derivable_key = descriptor_x_key.xkey;
+                let (extended_descriptor, key_map, _) = Bip86(derivable_key, keychain_kind)
+                    .build(network.into())
+                    .unwrap();
+                Self {
+                    extended_descriptor,
+                    key_map,
+                }
+            }
+            BdkDescriptorSecretKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorSecretKey::MultiXPrv(_) => {
+                unreachable!()
+            }
+        }
+    }
+
+    pub(crate) fn new_bip86_public(
+        public_key: Arc<DescriptorPublicKey>,
+        fingerprint: String,
+        keychain_kind: KeychainKind,
+        network: Network,
+    ) -> Self {
+        let fingerprint = Fingerprint::from_str(fingerprint.as_str()).unwrap();
+        let derivable_key = &public_key.inner;
+
+        match derivable_key {
+            BdkDescriptorPublicKey::XPub(descriptor_x_key) => {
+                let derivable_key = descriptor_x_key.xkey;
+                let (extended_descriptor, key_map, _) =
+                    Bip86Public(derivable_key, fingerprint, keychain_kind)
+                        .build(network.into())
+                        .unwrap();
+
+                Self {
+                    extended_descriptor,
+                    key_map,
+                }
+            }
+            BdkDescriptorPublicKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorPublicKey::MultiXPub(_) => {
+                unreachable!()
+            }
+        }
+    }
+
+    pub(crate) fn as_string_private(&self) -> String {
+        let descriptor = &self.extended_descriptor;
+        let key_map = &self.key_map;
+        descriptor.to_string_with_secret(key_map)
+    }
+
+    pub(crate) fn as_string(&self) -> String {
+        self.extended_descriptor.to_string()
+    }
+}
+
+// The goal of these tests to to ensure `bdk-ffi` intermediate code correctly calls `bdk` APIs.
+// These tests should not be used to verify `bdk` behavior that is already tested in the `bdk`
+// crate.
+#[cfg(test)]
+mod test {
+    use crate::database::DatabaseConfig;
+    use crate::*;
+    use assert_matches::assert_matches;
+    use bdk::descriptor::DescriptorError::Key;
+    use bdk::keys::KeyError::InvalidNetwork;
+
+    fn get_descriptor_secret_key() -> DescriptorSecretKey {
+        let mnemonic = Mnemonic::from_string("chaos fabric time speed sponsor all flat solution wisdom trophy crack object robot pave observe combine where aware bench orient secret primary cable detect".to_string()).unwrap();
+        DescriptorSecretKey::new(Network::Testnet, Arc::new(mnemonic), None)
+    }
+
+    #[test]
+    fn test_descriptor_templates() {
+        let master: Arc<DescriptorSecretKey> = Arc::new(get_descriptor_secret_key());
+        println!("Master: {:?}", master.as_string());
+        // tprv8ZgxMBicQKsPdWuqM1t1CDRvQtQuBPyfL6GbhQwtxDKgUAVPbxmj71pRA8raTqLrec5LyTs5TqCxdABcZr77bt2KyWA5bizJHnC4g4ysm4h
+        let handmade_public_44 = master
+            .derive(Arc::new(
+                DerivationPath::new("m/44h/1h/0h".to_string()).unwrap(),
+            ))
+            .unwrap()
+            .as_public();
+        println!("Public 44: {}", handmade_public_44.as_string());
+        // Public 44: [d1d04177/44'/1'/0']tpubDCoPjomfTqh1e7o1WgGpQtARWtkueXQAepTeNpWiitS3Sdv8RKJ1yvTrGHcwjDXp2SKyMrTEca4LoN7gEUiGCWboyWe2rz99Kf4jK4m2Zmx/*
+        let handmade_public_49 = master
+            .derive(Arc::new(
+                DerivationPath::new("m/49h/1h/0h".to_string()).unwrap(),
+            ))
+            .unwrap()
+            .as_public();
+        println!("Public 49: {}", handmade_public_49.as_string());
+        // Public 49: [d1d04177/49'/1'/0']tpubDC65ZRvk1NDddHrVAUAZrUPJ772QXzooNYmPywYF9tMyNLYKf5wpKE7ZJvK9kvfG3FV7rCsHBNXy1LVKW95jrmC7c7z4hq7a27aD2sRrAhR/*
+        let handmade_public_84 = master
+            .derive(Arc::new(
+                DerivationPath::new("m/84h/1h/0h".to_string()).unwrap(),
+            ))
+            .unwrap()
+            .as_public();
+        println!("Public 84: {}", handmade_public_84.as_string());
+        // Public 84: [d1d04177/84'/1'/0']tpubDDNxbq17egjFk2edjv8oLnzxk52zny9aAYNv9CMqTzA4mQDiQq818sEkNe9Gzmd4QU8558zftqbfoVBDQorG3E4Wq26tB2JeE4KUoahLkx6/*
+        let handmade_public_86 = master
+            .derive(Arc::new(
+                DerivationPath::new("m/86h/1h/0h".to_string()).unwrap(),
+            ))
+            .unwrap()
+            .as_public();
+        println!("Public 86: {}", handmade_public_86.as_string());
+        // Public 86: [d1d04177/86'/1'/0']tpubDCJzjbcGbdEfXMWaL6QmgVmuSfXkrue7m2YNoacWwyc7a2XjXaKojRqNEbo41CFL3PyYmKdhwg2fkGpLX4SQCbQjCGxAkWHJTw9WEeenrJb/*
+        let template_private_44 =
+            Descriptor::new_bip44(master.clone(), KeychainKind::External, Network::Testnet);
+        let template_private_49 =
+            Descriptor::new_bip49(master.clone(), KeychainKind::External, Network::Testnet);
+        let template_private_84 =
+            Descriptor::new_bip84(master.clone(), KeychainKind::External, Network::Testnet);
+        let template_private_86 =
+            Descriptor::new_bip86(master, KeychainKind::External, Network::Testnet);
+        // the extended public keys are the same when creating them manually as they are with the templates
+        println!("Template 49: {}", template_private_49.as_string());
+        println!("Template 44: {}", template_private_44.as_string());
+        println!("Template 84: {}", template_private_84.as_string());
+        println!("Template 86: {}", template_private_86.as_string());
+        let template_public_44 = Descriptor::new_bip44_public(
+            handmade_public_44,
+            "d1d04177".to_string(),
+            KeychainKind::External,
+            Network::Testnet,
+        );
+        let template_public_49 = Descriptor::new_bip49_public(
+            handmade_public_49,
+            "d1d04177".to_string(),
+            KeychainKind::External,
+            Network::Testnet,
+        );
+        let template_public_84 = Descriptor::new_bip84_public(
+            handmade_public_84,
+            "d1d04177".to_string(),
+            KeychainKind::External,
+            Network::Testnet,
+        );
+        let template_public_86 = Descriptor::new_bip86_public(
+            handmade_public_86,
+            "d1d04177".to_string(),
+            KeychainKind::External,
+            Network::Testnet,
+        );
+        println!("Template public 49: {}", template_public_49.as_string());
+        println!("Template public 44: {}", template_public_44.as_string());
+        println!("Template public 84: {}", template_public_84.as_string());
+        println!("Template public 86: {}", template_public_86.as_string());
+        // when using a public key, both as_string and as_string_private return the same string
+        assert_eq!(
+            template_public_44.as_string_private(),
+            template_public_44.as_string()
+        );
+        assert_eq!(
+            template_public_49.as_string_private(),
+            template_public_49.as_string()
+        );
+        assert_eq!(
+            template_public_84.as_string_private(),
+            template_public_84.as_string()
+        );
+        assert_eq!(
+            template_public_86.as_string_private(),
+            template_public_86.as_string()
+        );
+        // when using as_string on a private key, we get the same result as when using it on a public key
+        assert_eq!(
+            template_private_44.as_string(),
+            template_public_44.as_string()
+        );
+        assert_eq!(
+            template_private_49.as_string(),
+            template_public_49.as_string()
+        );
+        assert_eq!(
+            template_private_84.as_string(),
+            template_public_84.as_string()
+        );
+        assert_eq!(
+            template_private_86.as_string(),
+            template_public_86.as_string()
+        );
+    }
+    #[test]
+    fn test_descriptor_from_string() {
+        let descriptor1 = Descriptor::new("wpkh(tprv8hwWMmPE4BVNxGdVt3HhEERZhondQvodUY7Ajyseyhudr4WabJqWKWLr4Wi2r26CDaNCQhhxEftEaNzz7dPGhWuKFU4VULesmhEfZYyBXdE/0/*)".to_string(), Network::Testnet);
+        let descriptor2 = Descriptor::new("wpkh(tprv8hwWMmPE4BVNxGdVt3HhEERZhondQvodUY7Ajyseyhudr4WabJqWKWLr4Wi2r26CDaNCQhhxEftEaNzz7dPGhWuKFU4VULesmhEfZYyBXdE/0/*)".to_string(), Network::Bitcoin);
+        // Creating a Descriptor using an extended key that doesn't match the network provided will throw and InvalidNetwork Error
+        assert!(descriptor1.is_ok());
+        assert_matches!(
+            descriptor2.unwrap_err(),
+            bdk::Error::Descriptor(Key(InvalidNetwork))
+        )
+    }
+    #[test]
+    fn test_wallet_from_descriptor() {
+        let descriptor1 = Descriptor::new("wpkh(tprv8hwWMmPE4BVNxGdVt3HhEERZhondQvodUY7Ajyseyhudr4WabJqWKWLr4Wi2r26CDaNCQhhxEftEaNzz7dPGhWuKFU4VULesmhEfZYyBXdE/0/*)".to_string(), Network::Testnet).unwrap();
+        let wallet1 = Wallet::new(
+            Arc::new(Descriptor::new("wpkh(tprv8hwWMmPE4BVNxGdVt3HhEERZhondQvodUY7Ajyseyhudr4WabJqWKWLr4Wi2r26CDaNCQhhxEftEaNzz7dPGhWuKFU4VULesmhEfZYyBXdE/0/*)".to_string(), Network::Testnet).unwrap()),
+            None,
+            Network::Testnet,
+            DatabaseConfig::Memory
+        );
+        let wallet2 = Wallet::new(
+            Arc::new(descriptor1),
+            None,
+            Network::Bitcoin,
+            DatabaseConfig::Memory,
+        );
+        // Creating a wallet using a Descriptor with an extended key that doesn't match the network provided in the wallet constructor will throw and InvalidNetwork Error
+        assert!(wallet1.is_ok());
+        assert_matches!(
+            wallet2.unwrap_err(),
+            bdk::Error::Descriptor(Key(InvalidNetwork))
+        )
+    }
+}

bdk-ffi/src/keys.rs

@@ -0,0 +1,375 @@
+use crate::BdkError;
+
+use crate::Network;
+use bdk::bitcoin::bip32::DerivationPath as BdkDerivationPath;
+use bdk::bitcoin::secp256k1::Secp256k1;
+use bdk::keys::bip39::{Language, Mnemonic as BdkMnemonic, WordCount};
+use bdk::keys::{
+    DerivableKey, DescriptorPublicKey as BdkDescriptorPublicKey,
+    DescriptorSecretKey as BdkDescriptorSecretKey, ExtendedKey, GeneratableKey, GeneratedKey,
+};
+use bdk::miniscript::descriptor::{DescriptorXKey, Wildcard};
+use bdk::miniscript::BareCtx;
+use std::ops::Deref;
+use std::str::FromStr;
+use std::sync::{Arc, Mutex};
+
+/// Mnemonic phrases are a human-readable version of the private keys.
+/// Supported number of words are 12, 15, 18, 21 and 24.
+pub(crate) struct Mnemonic {
+    inner: BdkMnemonic,
+}
+
+impl Mnemonic {
+    /// Generates Mnemonic with a random entropy
+    pub(crate) fn new(word_count: WordCount) -> Self {
+        let generated_key: GeneratedKey<_, BareCtx> =
+            BdkMnemonic::generate((word_count, Language::English)).unwrap();
+        let mnemonic = BdkMnemonic::parse_in(Language::English, generated_key.to_string()).unwrap();
+        Mnemonic { inner: mnemonic }
+    }
+
+    /// Parse a Mnemonic with given string
+    pub(crate) fn from_string(mnemonic: String) -> Result<Self, BdkError> {
+        BdkMnemonic::from_str(&mnemonic)
+            .map(|m| Mnemonic { inner: m })
+            .map_err(|e| BdkError::Generic(e.to_string()))
+    }
+
+    /// Create a new Mnemonic in the specified language from the given entropy.
+    /// Entropy must be a multiple of 32 bits (4 bytes) and 128-256 bits in length.
+    pub(crate) fn from_entropy(entropy: Vec<u8>) -> Result<Self, BdkError> {
+        BdkMnemonic::from_entropy(entropy.as_slice())
+            .map(|m| Mnemonic { inner: m })
+            .map_err(|e| BdkError::Generic(e.to_string()))
+    }
+
+    /// Returns Mnemonic as string
+    pub(crate) fn as_string(&self) -> String {
+        self.inner.to_string()
+    }
+}
+
+pub(crate) struct DerivationPath {
+    inner_mutex: Mutex<BdkDerivationPath>,
+}
+
+impl DerivationPath {
+    pub(crate) fn new(path: String) -> Result<Self, BdkError> {
+        BdkDerivationPath::from_str(&path)
+            .map(|x| DerivationPath {
+                inner_mutex: Mutex::new(x),
+            })
+            .map_err(|e| BdkError::Generic(e.to_string()))
+    }
+}
+
+#[derive(Debug)]
+pub(crate) struct DescriptorSecretKey {
+    pub(crate) inner: BdkDescriptorSecretKey,
+}
+
+impl DescriptorSecretKey {
+    pub(crate) fn new(network: Network, mnemonic: Arc<Mnemonic>, password: Option<String>) -> Self {
+        let mnemonic = mnemonic.inner.clone();
+        let xkey: ExtendedKey = (mnemonic, password).into_extended_key().unwrap();
+        let descriptor_secret_key = BdkDescriptorSecretKey::XPrv(DescriptorXKey {
+            origin: None,
+            xkey: xkey.into_xprv(network.into()).unwrap(),
+            derivation_path: BdkDerivationPath::master(),
+            wildcard: Wildcard::Unhardened,
+        });
+        Self {
+            inner: descriptor_secret_key,
+        }
+    }
+
+    pub(crate) fn from_string(private_key: String) -> Result<Self, BdkError> {
+        let descriptor_secret_key = BdkDescriptorSecretKey::from_str(private_key.as_str())
+            .map_err(|e| BdkError::Generic(e.to_string()))?;
+        Ok(Self {
+            inner: descriptor_secret_key,
+        })
+    }
+
+    pub(crate) fn derive(&self, path: Arc<DerivationPath>) -> Result<Arc<Self>, BdkError> {
+        let secp = Secp256k1::new();
+        let descriptor_secret_key = &self.inner;
+        let path = path.inner_mutex.lock().unwrap().deref().clone();
+        match descriptor_secret_key {
+            BdkDescriptorSecretKey::XPrv(descriptor_x_key) => {
+                let derived_xprv = descriptor_x_key.xkey.derive_priv(&secp, &path)?;
+                let key_source = match descriptor_x_key.origin.clone() {
+                    Some((fingerprint, origin_path)) => (fingerprint, origin_path.extend(path)),
+                    None => (descriptor_x_key.xkey.fingerprint(&secp), path),
+                };
+                let derived_descriptor_secret_key = BdkDescriptorSecretKey::XPrv(DescriptorXKey {
+                    origin: Some(key_source),
+                    xkey: derived_xprv,
+                    derivation_path: BdkDerivationPath::default(),
+                    wildcard: descriptor_x_key.wildcard,
+                });
+                Ok(Arc::new(Self {
+                    inner: derived_descriptor_secret_key,
+                }))
+            }
+            BdkDescriptorSecretKey::Single(_) => Err(BdkError::Generic(
+                "Cannot derive from a single key".to_string(),
+            )),
+            BdkDescriptorSecretKey::MultiXPrv(_) => Err(BdkError::Generic(
+                "Cannot derive from a multi key".to_string(),
+            )),
+        }
+    }
+
+    pub(crate) fn extend(&self, path: Arc<DerivationPath>) -> Result<Arc<Self>, BdkError> {
+        let descriptor_secret_key = &self.inner;
+        let path = path.inner_mutex.lock().unwrap().deref().clone();
+        match descriptor_secret_key {
+            BdkDescriptorSecretKey::XPrv(descriptor_x_key) => {
+                let extended_path = descriptor_x_key.derivation_path.extend(path);
+                let extended_descriptor_secret_key = BdkDescriptorSecretKey::XPrv(DescriptorXKey {
+                    origin: descriptor_x_key.origin.clone(),
+                    xkey: descriptor_x_key.xkey,
+                    derivation_path: extended_path,
+                    wildcard: descriptor_x_key.wildcard,
+                });
+                Ok(Arc::new(Self {
+                    inner: extended_descriptor_secret_key,
+                }))
+            }
+            BdkDescriptorSecretKey::Single(_) => Err(BdkError::Generic(
+                "Cannot extend from a single key".to_string(),
+            )),
+            BdkDescriptorSecretKey::MultiXPrv(_) => Err(BdkError::Generic(
+                "Cannot extend from a multi key".to_string(),
+            )),
+        }
+    }
+
+    pub(crate) fn as_public(&self) -> Arc<DescriptorPublicKey> {
+        let secp = Secp256k1::new();
+        let descriptor_public_key = self.inner.to_public(&secp).unwrap();
+        Arc::new(DescriptorPublicKey {
+            inner: descriptor_public_key,
+        })
+    }
+
+    /// Get the private key as bytes.
+    pub(crate) fn secret_bytes(&self) -> Vec<u8> {
+        let inner = &self.inner;
+        let secret_bytes: Vec<u8> = match inner {
+            BdkDescriptorSecretKey::XPrv(descriptor_x_key) => {
+                descriptor_x_key.xkey.private_key.secret_bytes().to_vec()
+            }
+            BdkDescriptorSecretKey::Single(_) => {
+                unreachable!()
+            }
+            BdkDescriptorSecretKey::MultiXPrv(_) => {
+                unreachable!()
+            }
+        };
+
+        secret_bytes
+    }
+
+    pub(crate) fn as_string(&self) -> String {
+        self.inner.to_string()
+    }
+}
+
+#[derive(Debug)]
+pub(crate) struct DescriptorPublicKey {
+    pub(crate) inner: BdkDescriptorPublicKey,
+}
+
+impl DescriptorPublicKey {
+    pub(crate) fn from_string(public_key: String) -> Result<Self, BdkError> {
+        let descriptor_public_key = BdkDescriptorPublicKey::from_str(public_key.as_str())
+            .map_err(|e| BdkError::Generic(e.to_string()))?;
+        Ok(Self {
+            inner: descriptor_public_key,
+        })
+    }
+
+    pub(crate) fn derive(&self, path: Arc<DerivationPath>) -> Result<Arc<Self>, BdkError> {
+        let secp = Secp256k1::new();
+        let descriptor_public_key = &self.inner;
+        let path = path.inner_mutex.lock().unwrap().deref().clone();
+
+        match descriptor_public_key {
+            BdkDescriptorPublicKey::XPub(descriptor_x_key) => {
+                let derived_xpub = descriptor_x_key.xkey.derive_pub(&secp, &path)?;
+                let key_source = match descriptor_x_key.origin.clone() {
+                    Some((fingerprint, origin_path)) => (fingerprint, origin_path.extend(path)),
+                    None => (descriptor_x_key.xkey.fingerprint(), path),
+                };
+                let derived_descriptor_public_key = BdkDescriptorPublicKey::XPub(DescriptorXKey {
+                    origin: Some(key_source),
+                    xkey: derived_xpub,
+                    derivation_path: BdkDerivationPath::default(),
+                    wildcard: descriptor_x_key.wildcard,
+                });
+                Ok(Arc::new(Self {
+                    inner: derived_descriptor_public_key,
+                }))
+            }
+            BdkDescriptorPublicKey::Single(_) => Err(BdkError::Generic(
+                "Cannot derive from a single key".to_string(),
+            )),
+            BdkDescriptorPublicKey::MultiXPub(_) => Err(BdkError::Generic(
+                "Cannot derive from a multi key".to_string(),
+            )),
+        }
+    }
+
+    pub(crate) fn extend(&self, path: Arc<DerivationPath>) -> Result<Arc<Self>, BdkError> {
+        let descriptor_public_key = &self.inner;
+        let path = path.inner_mutex.lock().unwrap().deref().clone();
+        match descriptor_public_key {
+            BdkDescriptorPublicKey::XPub(descriptor_x_key) => {
+                let extended_path = descriptor_x_key.derivation_path.extend(path);
+                let extended_descriptor_public_key = BdkDescriptorPublicKey::XPub(DescriptorXKey {
+                    origin: descriptor_x_key.origin.clone(),
+                    xkey: descriptor_x_key.xkey,
+                    derivation_path: extended_path,
+                    wildcard: descriptor_x_key.wildcard,
+                });
+                Ok(Arc::new(Self {
+                    inner: extended_descriptor_public_key,
+                }))
+            }
+            BdkDescriptorPublicKey::Single(_) => Err(BdkError::Generic(
+                "Cannot extend from a single key".to_string(),
+            )),
+            BdkDescriptorPublicKey::MultiXPub(_) => Err(BdkError::Generic(
+                "Cannot extend from a multi key".to_string(),
+            )),
+        }
+    }
+
+    pub(crate) fn as_string(&self) -> String {
+        self.inner.to_string()
+    }
+}
+
+// The goal of these tests to to ensure `bdk-ffi` intermediate code correctly calls `bdk` APIs.
+// These tests should not be used to verify `bdk` behavior that is already tested in the `bdk`
+// crate.
+#[cfg(test)]
+mod test {
+    use crate::keys::{DerivationPath, DescriptorPublicKey, DescriptorSecretKey, Mnemonic};
+    use crate::BdkError;
+    use crate::Network;
+    use std::sync::Arc;
+
+    fn get_inner() -> DescriptorSecretKey {
+        let mnemonic = Mnemonic::from_string("chaos fabric time speed sponsor all flat solution wisdom trophy crack object robot pave observe combine where aware bench orient secret primary cable detect".to_string()).unwrap();
+        DescriptorSecretKey::new(Network::Testnet, Arc::new(mnemonic), None)
+    }
+
+    fn derive_dsk(
+        key: &DescriptorSecretKey,
+        path: &str,
+    ) -> Result<Arc<DescriptorSecretKey>, BdkError> {
+        let path = Arc::new(DerivationPath::new(path.to_string()).unwrap());
+        key.derive(path)
+    }
+
+    fn extend_dsk(
+        key: &DescriptorSecretKey,
+        path: &str,
+    ) -> Result<Arc<DescriptorSecretKey>, BdkError> {
+        let path = Arc::new(DerivationPath::new(path.to_string()).unwrap());
+        key.extend(path)
+    }
+
+    fn derive_dpk(
+        key: &DescriptorPublicKey,
+        path: &str,
+    ) -> Result<Arc<DescriptorPublicKey>, BdkError> {
+        let path = Arc::new(DerivationPath::new(path.to_string()).unwrap());
+        key.derive(path)
+    }
+
+    fn extend_dpk(
+        key: &DescriptorPublicKey,
+        path: &str,
+    ) -> Result<Arc<DescriptorPublicKey>, BdkError> {
+        let path = Arc::new(DerivationPath::new(path.to_string()).unwrap());
+        key.extend(path)
+    }
+
+    #[test]
+    fn test_generate_descriptor_secret_key() {
+        let master_dsk = get_inner();
+        assert_eq!(master_dsk.as_string(), "tprv8ZgxMBicQKsPdWuqM1t1CDRvQtQuBPyfL6GbhQwtxDKgUAVPbxmj71pRA8raTqLrec5LyTs5TqCxdABcZr77bt2KyWA5bizJHnC4g4ysm4h/*");
+        assert_eq!(master_dsk.as_public().as_string(), "tpubD6NzVbkrYhZ4WywdEfYbbd62yuvqLjAZuPsNyvzCNV85JekAEMbKHWSHLF9h3j45SxewXDcLv328B1SEZrxg4iwGfmdt1pDFjZiTkGiFqGa/*");
+    }
+
+    #[test]
+    fn test_derive_self() {
+        let master_dsk = get_inner();
+        let derived_dsk: &DescriptorSecretKey = &derive_dsk(&master_dsk, "m").unwrap();
+        assert_eq!(derived_dsk.as_string(), "[d1d04177]tprv8ZgxMBicQKsPdWuqM1t1CDRvQtQuBPyfL6GbhQwtxDKgUAVPbxmj71pRA8raTqLrec5LyTs5TqCxdABcZr77bt2KyWA5bizJHnC4g4ysm4h/*");
+        let master_dpk: &DescriptorPublicKey = &master_dsk.as_public();
+        let derived_dpk: &DescriptorPublicKey = &derive_dpk(master_dpk, "m").unwrap();
+        assert_eq!(derived_dpk.as_string(), "[d1d04177]tpubD6NzVbkrYhZ4WywdEfYbbd62yuvqLjAZuPsNyvzCNV85JekAEMbKHWSHLF9h3j45SxewXDcLv328B1SEZrxg4iwGfmdt1pDFjZiTkGiFqGa/*");
+    }
+
+    #[test]
+    fn test_derive_descriptors_keys() {
+        let master_dsk = get_inner();
+        let derived_dsk: &DescriptorSecretKey = &derive_dsk(&master_dsk, "m/0").unwrap();
+        assert_eq!(derived_dsk.as_string(), "[d1d04177/0]tprv8d7Y4JLmD25jkKbyDZXcdoPHu1YtMHuH21qeN7mFpjfumtSU7eZimFYUCSa3MYzkEYfSNRBV34GEr2QXwZCMYRZ7M1g6PUtiLhbJhBZEGYJ/*");
+        let master_dpk: &DescriptorPublicKey = &master_dsk.as_public();
+        let derived_dpk: &DescriptorPublicKey = &derive_dpk(master_dpk, "m/0").unwrap();
+        assert_eq!(derived_dpk.as_string(), "[d1d04177/0]tpubD9oaCiP1MPmQdndm7DCD3D3QU34pWd6BbKSRedoZF1UJcNhEk3PJwkALNYkhxeTKL29oGNR7psqvT1KZydCGqUDEKXN6dVQJY2R8ooLPy8m/*");
+    }
+
+    #[test]
+    fn test_extend_descriptor_keys() {
+        let master_dsk = get_inner();
+        let extended_dsk: &DescriptorSecretKey = &extend_dsk(&master_dsk, "m/0").unwrap();
+        assert_eq!(extended_dsk.as_string(), "tprv8ZgxMBicQKsPdWuqM1t1CDRvQtQuBPyfL6GbhQwtxDKgUAVPbxmj71pRA8raTqLrec5LyTs5TqCxdABcZr77bt2KyWA5bizJHnC4g4ysm4h/0/*");
+        let master_dpk: &DescriptorPublicKey = &master_dsk.as_public();
+        let extended_dpk: &DescriptorPublicKey = &extend_dpk(master_dpk, "m/0").unwrap();
+        assert_eq!(extended_dpk.as_string(), "tpubD6NzVbkrYhZ4WywdEfYbbd62yuvqLjAZuPsNyvzCNV85JekAEMbKHWSHLF9h3j45SxewXDcLv328B1SEZrxg4iwGfmdt1pDFjZiTkGiFqGa/0/*");
+        let wif = "L2wTu6hQrnDMiFNWA5na6jB12ErGQqtXwqpSL7aWquJaZG8Ai3ch";
+        let extended_key = DescriptorSecretKey::from_string(wif.to_string()).unwrap();
+        let result = extended_key.derive(Arc::new(DerivationPath::new("m/0".to_string()).unwrap()));
+        dbg!(&result);
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn test_from_str_inner() {
+        let key1 = "L2wTu6hQrnDMiFNWA5na6jB12ErGQqtXwqpSL7aWquJaZG8Ai3ch";
+        let key2 = "tprv8ZgxMBicQKsPcwcD4gSnMti126ZiETsuX7qwrtMypr6FBwAP65puFn4v6c3jrN9VwtMRMph6nyT63NrfUL4C3nBzPcduzVSuHD7zbX2JKVc/1/1/1/*";
+        let private_descriptor_key1 = DescriptorSecretKey::from_string(key1.to_string()).unwrap();
+        let private_descriptor_key2 = DescriptorSecretKey::from_string(key2.to_string()).unwrap();
+        dbg!(private_descriptor_key1);
+        dbg!(private_descriptor_key2);
+        // Should error out because you can't produce a DescriptorSecretKey from an xpub
+        let key0 = "tpubDBrgjcxBxnXyL575sHdkpKohWu5qHKoQ7TJXKNrYznh5fVEGBv89hA8ENW7A8MFVpFUSvgLqc4Nj1WZcpePX6rrxviVtPowvMuGF5rdT2Vi";
+        assert!(DescriptorSecretKey::from_string(key0.to_string()).is_err());
+    }
+
+    #[test]
+    fn test_derive_and_extend_inner() {
+        let master_dsk = get_inner();
+        // derive DescriptorSecretKey with path "m/0" from master
+        let derived_dsk: &DescriptorSecretKey = &derive_dsk(&master_dsk, "m/0").unwrap();
+        assert_eq!(derived_dsk.as_string(), "[d1d04177/0]tprv8d7Y4JLmD25jkKbyDZXcdoPHu1YtMHuH21qeN7mFpjfumtSU7eZimFYUCSa3MYzkEYfSNRBV34GEr2QXwZCMYRZ7M1g6PUtiLhbJhBZEGYJ/*");
+        // extend derived_dsk with path "m/0"
+        let extended_dsk: &DescriptorSecretKey = &extend_dsk(derived_dsk, "m/0").unwrap();
+        assert_eq!(extended_dsk.as_string(), "[d1d04177/0]tprv8d7Y4JLmD25jkKbyDZXcdoPHu1YtMHuH21qeN7mFpjfumtSU7eZimFYUCSa3MYzkEYfSNRBV34GEr2QXwZCMYRZ7M1g6PUtiLhbJhBZEGYJ/0/*");
+    }
+
+    #[test]
+    fn test_derive_hardened_path_using_public() {
+        let master_dpk = get_inner().as_public();
+        let derived_dpk = &derive_dpk(&master_dpk, "m/84h/1h/0h");
+        assert!(derived_dpk.is_err());
+    }
+}

bdk-ffi/src/psbt.rs

@@ -0,0 +1,119 @@
+use bdk::bitcoin::psbt::PartiallySignedTransaction as BdkPartiallySignedTransaction;
+use bdk::bitcoincore_rpc::jsonrpc::serde_json;
+use bdk::psbt::PsbtUtils;
+use std::ops::Deref;
+use std::str::FromStr;
+use std::sync::{Arc, Mutex};
+
+use crate::{BdkError, FeeRate, Transaction};
+
+#[derive(Debug)]
+pub(crate) struct PartiallySignedTransaction {
+    pub(crate) inner: Mutex<BdkPartiallySignedTransaction>,
+}
+
+impl PartiallySignedTransaction {
+    pub(crate) fn new(psbt_base64: String) -> Result<Self, BdkError> {
+        let psbt: BdkPartiallySignedTransaction =
+            BdkPartiallySignedTransaction::from_str(&psbt_base64)?;
+        Ok(PartiallySignedTransaction {
+            inner: Mutex::new(psbt),
+        })
+    }
+
+    pub(crate) fn serialize(&self) -> String {
+        let psbt = self.inner.lock().unwrap().clone();
+        psbt.to_string()
+    }
+
+    pub(crate) fn txid(&self) -> String {
+        let tx = self.inner.lock().unwrap().clone().extract_tx();
+        let txid = tx.txid();
+        txid.to_string()
+    }
+
+    /// Return the transaction.
+    pub(crate) fn extract_tx(&self) -> Arc<Transaction> {
+        let tx = self.inner.lock().unwrap().clone().extract_tx();
+        Arc::new(tx.into())
+    }
+
+    /// Combines this PartiallySignedTransaction with other PSBT as described by BIP 174.
+    ///
+    /// In accordance with BIP 174 this function is commutative i.e., `A.combine(B) == B.combine(A)`
+    pub(crate) fn combine(
+        &self,
+        other: Arc<PartiallySignedTransaction>,
+    ) -> Result<Arc<PartiallySignedTransaction>, BdkError> {
+        let other_psbt = other.inner.lock().unwrap().clone();
+        let mut original_psbt = self.inner.lock().unwrap().clone();
+
+        original_psbt.combine(other_psbt)?;
+        Ok(Arc::new(PartiallySignedTransaction {
+            inner: Mutex::new(original_psbt),
+        }))
+    }
+
+    /// The total transaction fee amount, sum of input amounts minus sum of output amounts, in Sats.
+    /// If the PSBT is missing a TxOut for an input returns None.
+    pub(crate) fn fee_amount(&self) -> Option<u64> {
+        self.inner.lock().unwrap().fee_amount()
+    }
+
+    /// The transaction's fee rate. This value will only be accurate if calculated AFTER the
+    /// `PartiallySignedTransaction` is finalized and all witness/signature data is added to the
+    /// transaction.
+    /// If the PSBT is missing a TxOut for an input returns None.
+    pub(crate) fn fee_rate(&self) -> Option<Arc<FeeRate>> {
+        self.inner.lock().unwrap().fee_rate().map(Arc::new)
+    }
+
+    /// Serialize the PSBT data structure as a String of JSON.
+    pub(crate) fn json_serialize(&self) -> String {
+        let psbt = self.inner.lock().unwrap();
+        serde_json::to_string(psbt.deref()).unwrap()
+    }
+}
+
+// The goal of these tests to to ensure `bdk-ffi` intermediate code correctly calls `bdk` APIs.
+// These tests should not be used to verify `bdk` behavior that is already tested in the `bdk`
+// crate.
+#[cfg(test)]
+mod test {
+    use crate::wallet::{TxBuilder, Wallet};
+    use crate::Network;
+    use bdk::wallet::get_funded_wallet;
+    use std::sync::Mutex;
+
+    #[test]
+    fn test_psbt_fee() {
+        let test_wpkh = "wpkh(cVpPVruEDdmutPzisEsYvtST1usBR3ntr8pXSyt6D2YYqXRyPcFW)";
+        let (funded_wallet, _, _) = get_funded_wallet(test_wpkh);
+        let test_wallet = Wallet {
+            inner_mutex: Mutex::new(funded_wallet),
+        };
+        let drain_to_address = "tb1ql7w62elx9ucw4pj5lgw4l028hmuw80sndtntxt".to_string();
+        let drain_to_script = crate::Address::new(drain_to_address, Network::Testnet)
+            .unwrap()
+            .script_pubkey();
+
+        let tx_builder = TxBuilder::new()
+            .fee_rate(2.0)
+            .drain_wallet()
+            .drain_to(drain_to_script.clone());
+        //dbg!(&tx_builder);
+        assert!(tx_builder.drain_wallet);
+        assert_eq!(tx_builder.drain_to, Some(drain_to_script.0.clone()));
+
+        let tx_builder_result = tx_builder.finish(&test_wallet).unwrap();
+
+        assert!(tx_builder_result.psbt.fee_rate().is_some());
+        assert_eq!(
+            tx_builder_result.psbt.fee_rate().unwrap().as_sat_per_vb(),
+            2.682927
+        );
+
+        assert!(tx_builder_result.psbt.fee_amount().is_some());
+        assert_eq!(tx_builder_result.psbt.fee_amount().unwrap(), 220);
+    }
+}

bdk-ffi/src/wallet.rs

@@ -0,0 +1,865 @@
+use bdk::bitcoin::blockdata::script::ScriptBuf as BdkScriptBuf;
+use bdk::bitcoin::script::PushBytesBuf;
+use bdk::bitcoin::{OutPoint as BdkOutPoint, Sequence, Txid};
+use bdk::database::any::AnyDatabase;
+use bdk::database::{AnyDatabaseConfig, ConfigurableDatabase};
+use bdk::wallet::tx_builder::ChangeSpendPolicy;
+use bdk::{
+    FeeRate, LocalUtxo as BdkLocalUtxo, SignOptions as BdkSignOptions,
+    SyncOptions as BdkSyncOptions, Wallet as BdkWallet,
+};
+use std::collections::HashSet;
+use std::convert::TryFrom;
+use std::ops::Deref;
+use std::str::FromStr;
+use std::sync::{Arc, Mutex, MutexGuard};
+
+use crate::blockchain::Blockchain;
+use crate::database::DatabaseConfig;
+use crate::descriptor::Descriptor;
+use crate::psbt::PartiallySignedTransaction;
+use crate::Network;
+use crate::{
+    AddressIndex, AddressInfo, Balance, BdkError, LocalUtxo, OutPoint, Progress, ProgressHolder,
+    RbfValue, Script, ScriptAmount, TransactionDetails, TxBuilderResult,
+};
+
+#[derive(Debug)]
+pub(crate) struct Wallet {
+    pub(crate) inner_mutex: Mutex<BdkWallet<AnyDatabase>>,
+}
+
+/// A Bitcoin wallet.
+/// The Wallet acts as a way of coherently interfacing with output descriptors and related transactions. Its main components are:
+///     1. Output descriptors from which it can derive addresses.
+///     2. A Database where it tracks transactions and utxos related to the descriptors.
+///     3. Signers that can contribute signatures to addresses instantiated from the descriptors.
+impl Wallet {
+    pub(crate) fn new(
+        descriptor: Arc<Descriptor>,
+        change_descriptor: Option<Arc<Descriptor>>,
+        network: Network,
+        database_config: DatabaseConfig,
+    ) -> Result<Self, BdkError> {
+        let any_database_config = match database_config {
+            DatabaseConfig::Memory => AnyDatabaseConfig::Memory(()),
+            DatabaseConfig::Sled { config } => AnyDatabaseConfig::Sled(config),
+            DatabaseConfig::Sqlite { config } => AnyDatabaseConfig::Sqlite(config),
+        };
+        let database = AnyDatabase::from_config(&any_database_config)?;
+        let descriptor: String = descriptor.as_string_private();
+        let change_descriptor: Option<String> = change_descriptor.map(|d| d.as_string_private());
+
+        let wallet_mutex = Mutex::new(BdkWallet::new(
+            &descriptor,
+            change_descriptor.as_ref(),
+            network.into(),
+            database,
+        )?);
+        Ok(Wallet {
+            inner_mutex: wallet_mutex,
+        })
+    }
+
+    pub(crate) fn get_wallet(&self) -> MutexGuard<BdkWallet<AnyDatabase>> {
+        self.inner_mutex.lock().expect("wallet")
+    }
+
+    /// Get the Bitcoin network the wallet is using.
+    pub(crate) fn network(&self) -> Network {
+        self.get_wallet().network().into()
+    }
+
+    /// Return whether or not a script is part of this wallet (either internal or external).
+    pub(crate) fn is_mine(&self, script: Arc<Script>) -> Result<bool, BdkError> {
+        self.get_wallet().is_mine(&script.0)
+    }
+
+    /// Sync the internal database with the blockchain.
+    pub(crate) fn sync(
+        &self,
+        blockchain: &Blockchain,
+        progress: Option<Box<dyn Progress>>,
+    ) -> Result<(), BdkError> {
+        let bdk_sync_opts = BdkSyncOptions {
+            progress: progress.map(|p| {
+                Box::new(ProgressHolder { progress: p })
+                    as Box<(dyn bdk::blockchain::Progress + 'static)>
+            }),
+        };
+
+        let blockchain = blockchain.get_blockchain();
+        self.get_wallet().sync(blockchain.deref(), bdk_sync_opts)
+    }
+
+    /// Return a derived address using the external descriptor, see AddressIndex for available address index selection
+    /// strategies. If none of the keys in the descriptor are derivable (i.e. the descriptor does not end with a * character)
+    /// then the same address will always be returned for any AddressIndex.
+    pub(crate) fn get_address(&self, address_index: AddressIndex) -> Result<AddressInfo, BdkError> {
+        self.get_wallet()
+            .get_address(address_index.into())
+            .map(AddressInfo::from)
+    }
+
+    /// Return a derived address using the internal (change) descriptor.
+    ///
+    /// If the wallet doesn't have an internal descriptor it will use the external descriptor.
+    ///
+    /// see [`AddressIndex`] for available address index selection strategies. If none of the keys
+    /// in the descriptor are derivable (i.e. does not end with /*) then the same address will always
+    /// be returned for any [`AddressIndex`].
+    pub(crate) fn get_internal_address(
+        &self,
+        address_index: AddressIndex,
+    ) -> Result<AddressInfo, BdkError> {
+        self.get_wallet()
+            .get_internal_address(address_index.into())
+            .map(AddressInfo::from)
+    }
+
+    /// Return the balance, meaning the sum of this wallet’s unspent outputs’ values. Note that this method only operates
+    /// on the internal database, which first needs to be Wallet.sync manually.
+    pub(crate) fn get_balance(&self) -> Result<Balance, BdkError> {
+        self.get_wallet().get_balance().map(|b| b.into())
+    }
+
+    /// Sign a transaction with all the wallet's signers, in the order specified by every signer's
+    /// [`SignerOrdering`]. This function returns the `Result` type with an encapsulated `bool` that
+    /// has the value true if the PSBT was finalized, or false otherwise.
+    ///
+    /// The [`SignOptions`] can be used to tweak the behavior of the software signers, and the way
+    /// the transaction is finalized at the end. Note that it can't be guaranteed that *every*
+    /// signers will follow the options, but the "software signers" (WIF keys and `xprv`) defined
+    /// in this library will.
+    pub(crate) fn sign(
+        &self,
+        psbt: &PartiallySignedTransaction,
+        sign_options: Option<SignOptions>,
+    ) -> Result<bool, BdkError> {
+        let mut psbt = psbt.inner.lock().unwrap();
+        self.get_wallet().sign(
+            &mut psbt,
+            sign_options.map(SignOptions::into).unwrap_or_default(),
+        )
+    }
+
+    /// Return the list of transactions made and received by the wallet. Note that this method only operate on the internal database, which first needs to be [Wallet.sync] manually.
+    pub(crate) fn list_transactions(
+        &self,
+        include_raw: bool,
+    ) -> Result<Vec<TransactionDetails>, BdkError> {
+        let transaction_details = self.get_wallet().list_transactions(include_raw)?;
+        Ok(transaction_details
+            .into_iter()
+            .map(TransactionDetails::from)
+            .collect())
+    }
+
+    /// Return the list of unspent outputs of this wallet. Note that this method only operates on the internal database,
+    /// which first needs to be Wallet.sync manually.
+    pub(crate) fn list_unspent(&self) -> Result<Vec<LocalUtxo>, BdkError> {
+        let unspents: Vec<BdkLocalUtxo> = self.get_wallet().list_unspent()?;
+        Ok(unspents.into_iter().map(LocalUtxo::from).collect())
+    }
+}
+
+/// Options for a software signer
+///
+/// Adjust the behavior of our software signers and the way a transaction is finalized
+#[derive(Debug, Clone, Default)]
+pub struct SignOptions {
+    /// Whether the signer should trust the `witness_utxo`, if the `non_witness_utxo` hasn't been
+    /// provided
+    ///
+    /// Defaults to `false` to mitigate the "SegWit bug" which should trick the wallet into
+    /// paying a fee larger than expected.
+    ///
+    /// Some wallets, especially if relatively old, might not provide the `non_witness_utxo` for
+    /// SegWit transactions in the PSBT they generate: in those cases setting this to `true`
+    /// should correctly produce a signature, at the expense of an increased trust in the creator
+    /// of the PSBT.
+    ///
+    /// For more details see: <https://blog.trezor.io/details-of-firmware-updates-for-trezor-one-version-1-9-1-and-trezor-model-t-version-2-3-1-1eba8f60f2dd>
+    pub trust_witness_utxo: bool,
+
+    /// Whether the wallet should assume a specific height has been reached when trying to finalize
+    /// a transaction
+    ///
+    /// The wallet will only "use" a timelock to satisfy the spending policy of an input if the
+    /// timelock height has already been reached. This option allows overriding the "current height" to let the
+    /// wallet use timelocks in the future to spend a coin.
+    pub assume_height: Option<u32>,
+
+    /// Whether the signer should use the `sighash_type` set in the PSBT when signing, no matter
+    /// what its value is
+    ///
+    /// Defaults to `false` which will only allow signing using `SIGHASH_ALL`.
+    pub allow_all_sighashes: bool,
+
+    /// Whether to remove partial signatures from the PSBT inputs while finalizing PSBT.
+    ///
+    /// Defaults to `true` which will remove partial signatures during finalization.
+    pub remove_partial_sigs: bool,
+
+    /// Whether to try finalizing the PSBT after the inputs are signed.
+    ///
+    /// Defaults to `true` which will try finalizing PSBT after inputs are signed.
+    pub try_finalize: bool,
+
+    // Specifies which Taproot script-spend leaves we should sign for. This option is
+    // ignored if we're signing a non-taproot PSBT.
+    //
+    // Defaults to All, i.e., the wallet will sign all the leaves it has a key for.
+    // TODO pub tap_leaves_options: TapLeavesOptions,
+    /// Whether we should try to sign a taproot transaction with the taproot internal key
+    /// or not. This option is ignored if we're signing a non-taproot PSBT.
+    ///
+    /// Defaults to `true`, i.e., we always try to sign with the taproot internal key.
+    pub sign_with_tap_internal_key: bool,
+
+    /// Whether we should grind ECDSA signature to ensure signing with low r
+    /// or not.
+    /// Defaults to `true`, i.e., we always grind ECDSA signature to sign with low r.
+    pub allow_grinding: bool,
+}
+
+impl From<SignOptions> for BdkSignOptions {
+    fn from(sign_options: SignOptions) -> Self {
+        BdkSignOptions {
+            trust_witness_utxo: sign_options.trust_witness_utxo,
+            assume_height: sign_options.assume_height,
+            allow_all_sighashes: sign_options.allow_all_sighashes,
+            remove_partial_sigs: sign_options.remove_partial_sigs,
+            try_finalize: sign_options.try_finalize,
+            tap_leaves_options: Default::default(),
+            sign_with_tap_internal_key: sign_options.sign_with_tap_internal_key,
+            allow_grinding: sign_options.allow_grinding,
+        }
+    }
+}
+
+/// A transaction builder.
+/// After creating the TxBuilder, you set options on it until finally calling finish to consume the builder and generate the transaction.
+/// Each method on the TxBuilder returns an instance of a new TxBuilder with the option set/added.
+#[derive(Clone, Debug)]
+pub(crate) struct TxBuilder {
+    pub(crate) recipients: Vec<(BdkScriptBuf, u64)>,
+    pub(crate) utxos: Vec<OutPoint>,
+    pub(crate) unspendable: HashSet<OutPoint>,
+    pub(crate) change_policy: ChangeSpendPolicy,
+    pub(crate) manually_selected_only: bool,
+    pub(crate) fee_rate: Option<f32>,
+    pub(crate) fee_absolute: Option<u64>,
+    pub(crate) drain_wallet: bool,
+    pub(crate) drain_to: Option<BdkScriptBuf>,
+    pub(crate) rbf: Option<RbfValue>,
+    pub(crate) data: Vec<u8>,
+}
+
+impl TxBuilder {
+    pub(crate) fn new() -> Self {
+        TxBuilder {
+            recipients: Vec::new(),
+            utxos: Vec::new(),
+            unspendable: HashSet::new(),
+            change_policy: ChangeSpendPolicy::ChangeAllowed,
+            manually_selected_only: false,
+            fee_rate: None,
+            fee_absolute: None,
+            drain_wallet: false,
+            drain_to: None,
+            rbf: None,
+            data: Vec::new(),
+        }
+    }
+
+    /// Add a recipient to the internal list.
+    pub(crate) fn add_recipient(&self, script: Arc<Script>, amount: u64) -> Arc<Self> {
+        let mut recipients: Vec<(BdkScriptBuf, u64)> = self.recipients.clone();
+        recipients.append(&mut vec![(script.0.clone(), amount)]);
+        Arc::new(TxBuilder {
+            recipients,
+            ..self.clone()
+        })
+    }
+
+    pub(crate) fn set_recipients(&self, recipients: Vec<ScriptAmount>) -> Arc<Self> {
+        let recipients = recipients
+            .iter()
+            .map(|script_amount| (script_amount.script.0.clone(), script_amount.amount))
+            .collect();
+        Arc::new(TxBuilder {
+            recipients,
+            ..self.clone()
+        })
+    }
+
+    /// Add a utxo to the internal list of unspendable utxos. It’s important to note that the "must-be-spent"
+    /// utxos added with [TxBuilder.addUtxo] have priority over this. See the Rust docs of the two linked methods for more details.
+    pub(crate) fn add_unspendable(&self, unspendable: OutPoint) -> Arc<Self> {
+        let mut unspendable_hash_set = self.unspendable.clone();
+        unspendable_hash_set.insert(unspendable);
+        Arc::new(TxBuilder {
+            unspendable: unspendable_hash_set,
+            ..self.clone()
+        })
+    }
+
+    /// Add an outpoint to the internal list of UTXOs that must be spent. These have priority over the "unspendable"
+    /// utxos, meaning that if a utxo is present both in the "utxos" and the "unspendable" list, it will be spent.
+    pub(crate) fn add_utxo(&self, outpoint: OutPoint) -> Arc<Self> {
+        self.add_utxos(vec![outpoint])
+    }
+
+    /// Add the list of outpoints to the internal list of UTXOs that must be spent. If an error occurs while adding
+    /// any of the UTXOs then none of them are added and the error is returned. These have priority over the "unspendable"
+    /// utxos, meaning that if a utxo is present both in the "utxos" and the "unspendable" list, it will be spent.
+    pub(crate) fn add_utxos(&self, mut outpoints: Vec<OutPoint>) -> Arc<Self> {
+        let mut utxos = self.utxos.to_vec();
+        utxos.append(&mut outpoints);
+        Arc::new(TxBuilder {
+            utxos,
+            ..self.clone()
+        })
+    }
+
+    /// Do not spend change outputs. This effectively adds all the change outputs to the "unspendable" list. See TxBuilder.unspendable.
+    pub(crate) fn do_not_spend_change(&self) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            change_policy: ChangeSpendPolicy::ChangeForbidden,
+            ..self.clone()
+        })
+    }
+
+    /// Only spend utxos added by [add_utxo]. The wallet will not add additional utxos to the transaction even if they are
+    /// needed to make the transaction valid.
+    pub(crate) fn manually_selected_only(&self) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            manually_selected_only: true,
+            ..self.clone()
+        })
+    }
+
+    /// Only spend change outputs. This effectively adds all the non-change outputs to the "unspendable" list. See TxBuilder.unspendable.
+    pub(crate) fn only_spend_change(&self) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            change_policy: ChangeSpendPolicy::OnlyChange,
+            ..self.clone()
+        })
+    }
+
+    /// Replace the internal list of unspendable utxos with a new list. It’s important to note that the "must-be-spent" utxos added with
+    /// TxBuilder.addUtxo have priority over these. See the Rust docs of the two linked methods for more details.
+    pub(crate) fn unspendable(&self, unspendable: Vec<OutPoint>) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            unspendable: unspendable.into_iter().collect(),
+            ..self.clone()
+        })
+    }
+
+    /// Set a custom fee rate.
+    pub(crate) fn fee_rate(&self, sat_per_vb: f32) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            fee_rate: Some(sat_per_vb),
+            ..self.clone()
+        })
+    }
+
+    /// Set an absolute fee.
+    pub(crate) fn fee_absolute(&self, fee_amount: u64) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            fee_absolute: Some(fee_amount),
+            ..self.clone()
+        })
+    }
+
+    /// Spend all the available inputs. This respects filters like TxBuilder.unspendable and the change policy.
+    pub(crate) fn drain_wallet(&self) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            drain_wallet: true,
+            ..self.clone()
+        })
+    }
+
+    /// Sets the address to drain excess coins to. Usually, when there are excess coins they are sent to a change address
+    /// generated by the wallet. This option replaces the usual change address with an arbitrary ScriptPubKey of your choosing.
+    /// Just as with a change output, if the drain output is not needed (the excess coins are too small) it will not be included
+    /// in the resulting transaction. The only difference is that it is valid to use drain_to without setting any ordinary recipients
+    /// with add_recipient (but it is perfectly fine to add recipients as well). If you choose not to set any recipients, you should
+    /// either provide the utxos that the transaction should spend via add_utxos, or set drain_wallet to spend all of them.
+    /// When bumping the fees of a transaction made with this option, you probably want to use BumpFeeTxBuilder.allow_shrinking
+    /// to allow this output to be reduced to pay for the extra fees.
+    pub(crate) fn drain_to(&self, script: Arc<Script>) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            drain_to: Some(script.0.clone()),
+            ..self.clone()
+        })
+    }
+
+    /// Enable signaling RBF. This will use the default `nsequence` value of `0xFFFFFFFD`.
+    pub(crate) fn enable_rbf(&self) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            rbf: Some(RbfValue::Default),
+            ..self.clone()
+        })
+    }
+
+    /// Enable signaling RBF with a specific nSequence value. This can cause conflicts if the wallet's descriptors contain an
+    /// "older" (OP_CSV) operator and the given `nsequence` is lower than the CSV value. If the `nsequence` is higher than `0xFFFFFFFD`
+    /// an error will be thrown, since it would not be a valid nSequence to signal RBF.
+    pub(crate) fn enable_rbf_with_sequence(&self, nsequence: u32) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            rbf: Some(RbfValue::Value(nsequence)),
+            ..self.clone()
+        })
+    }
+
+    /// Add data as an output using OP_RETURN.
+    pub(crate) fn add_data(&self, data: Vec<u8>) -> Arc<Self> {
+        Arc::new(TxBuilder {
+            data,
+            ..self.clone()
+        })
+    }
+
+    /// Finish building the transaction. Returns the BIP174 PSBT.
+    pub(crate) fn finish(&self, wallet: &Wallet) -> Result<TxBuilderResult, BdkError> {
+        let wallet = wallet.get_wallet();
+        let mut tx_builder = wallet.build_tx();
+        for (script, amount) in &self.recipients {
+            tx_builder.add_recipient(script.clone(), *amount);
+        }
+        tx_builder.change_policy(self.change_policy);
+        if !self.utxos.is_empty() {
+            let bdk_utxos: Vec<BdkOutPoint> = self.utxos.iter().map(BdkOutPoint::from).collect();
+            let utxos: &[BdkOutPoint] = &bdk_utxos;
+            tx_builder.add_utxos(utxos)?;
+        }
+        if !self.unspendable.is_empty() {
+            let bdk_unspendable: Vec<BdkOutPoint> =
+                self.unspendable.iter().map(BdkOutPoint::from).collect();
+            tx_builder.unspendable(bdk_unspendable);
+        }
+        if self.manually_selected_only {
+            tx_builder.manually_selected_only();
+        }
+        if let Some(sat_per_vb) = self.fee_rate {
+            tx_builder.fee_rate(FeeRate::from_sat_per_vb(sat_per_vb));
+        }
+        if let Some(fee_amount) = self.fee_absolute {
+            tx_builder.fee_absolute(fee_amount);
+        }
+        if self.drain_wallet {
+            tx_builder.drain_wallet();
+        }
+        if let Some(script) = &self.drain_to {
+            tx_builder.drain_to(script.clone());
+        }
+        if let Some(rbf) = &self.rbf {
+            match *rbf {
+                RbfValue::Default => {
+                    tx_builder.enable_rbf();
+                }
+                RbfValue::Value(nsequence) => {
+                    tx_builder.enable_rbf_with_sequence(Sequence(nsequence));
+                }
+            }
+        }
+        if !&self.data.is_empty() {
+            let push_bytes = PushBytesBuf::try_from(self.data.clone()).map_err(|_| {
+                BdkError::Generic("Failed to convert data to PushBytes".to_string())
+            })?;
+            tx_builder.add_data(&push_bytes);
+        }
+
+        tx_builder
+            .finish()
+            .map(|(psbt, tx_details)| TxBuilderResult {
+                psbt: Arc::new(PartiallySignedTransaction {
+                    inner: Mutex::new(psbt),
+                }),
+                transaction_details: TransactionDetails::from(tx_details),
+            })
+    }
+}
+
+/// The BumpFeeTxBuilder is used to bump the fee on a transaction that has been broadcast and has its RBF flag set to true.
+#[derive(Clone)]
+pub(crate) struct BumpFeeTxBuilder {
+    pub(crate) txid: String,
+    pub(crate) fee_rate: f32,
+    pub(crate) allow_shrinking: Option<Arc<Script>>,
+    pub(crate) rbf: Option<RbfValue>,
+}
+
+impl BumpFeeTxBuilder {
+    pub(crate) fn new(txid: String, fee_rate: f32) -> Self {
+        Self {
+            txid,
+            fee_rate,
+            allow_shrinking: None,
+            rbf: None,
+        }
+    }
+
+    /// Explicitly tells the wallet that it is allowed to reduce the amount of the output matching this script_pubkey
+    /// in order to bump the transaction fee. Without specifying this the wallet will attempt to find a change output to
+    /// shrink instead. Note that the output may shrink to below the dust limit and therefore be removed. If it is preserved
+    /// then it is currently not guaranteed to be in the same position as it was originally. Returns an error if script_pubkey
+    /// can’t be found among the recipients of the transaction we are bumping.
+    pub(crate) fn allow_shrinking(&self, script_pubkey: Arc<Script>) -> Arc<Self> {
+        Arc::new(Self {
+            allow_shrinking: Some(script_pubkey),
+            ..self.clone()
+        })
+    }
+
+    /// Enable signaling RBF. This will use the default `nsequence` value of `0xFFFFFFFD`.
+    pub(crate) fn enable_rbf(&self) -> Arc<Self> {
+        Arc::new(Self {
+            rbf: Some(RbfValue::Default),
+            ..self.clone()
+        })
+    }
+
+    /// Enable signaling RBF with a specific nSequence value. This can cause conflicts if the wallet's descriptors contain an
+    /// "older" (OP_CSV) operator and the given `nsequence` is lower than the CSV value. If the `nsequence` is higher than `0xFFFFFFFD`
+    /// an error will be thrown, since it would not be a valid nSequence to signal RBF.
+    pub(crate) fn enable_rbf_with_sequence(&self, nsequence: u32) -> Arc<Self> {
+        Arc::new(Self {
+            rbf: Some(RbfValue::Value(nsequence)),
+            ..self.clone()
+        })
+    }
+
+    /// Finish building the transaction. Returns the BIP174 PSBT.
+    pub(crate) fn finish(
+        &self,
+        wallet: &Wallet,
+    ) -> Result<Arc<PartiallySignedTransaction>, BdkError> {
+        let wallet = wallet.get_wallet();
+        let txid = Txid::from_str(self.txid.as_str())?;
+        let mut tx_builder = wallet.build_fee_bump(txid)?;
+        tx_builder.fee_rate(FeeRate::from_sat_per_vb(self.fee_rate));
+        if let Some(allow_shrinking) = &self.allow_shrinking {
+            tx_builder.allow_shrinking(allow_shrinking.0.clone())?;
+        }
+        if let Some(rbf) = &self.rbf {
+            match *rbf {
+                RbfValue::Default => {
+                    tx_builder.enable_rbf();
+                }
+                RbfValue::Value(nsequence) => {
+                    tx_builder.enable_rbf_with_sequence(Sequence(nsequence));
+                }
+            }
+        }
+        tx_builder
+            .finish()
+            .map(|(psbt, _)| PartiallySignedTransaction {
+                inner: Mutex::new(psbt),
+            })
+            .map(Arc::new)
+    }
+}
+
+// The goal of these tests to to ensure `bdk-ffi` intermediate code correctly calls `bdk` APIs.
+// These tests should not be used to verify `bdk` behavior that is already tested in the `bdk`
+// crate.
+#[cfg(test)]
+mod test {
+    use crate::database::DatabaseConfig;
+    use crate::descriptor::Descriptor;
+    use crate::keys::{DescriptorSecretKey, Mnemonic};
+    use crate::wallet::{AddressIndex, TxBuilder, Wallet};
+    use crate::Network;
+    use crate::Script;
+    use assert_matches::assert_matches;
+    use bdk::bitcoin::Address;
+    use bdk::wallet::get_funded_wallet;
+    use bdk::KeychainKind;
+    use std::str::FromStr;
+    use std::sync::{Arc, Mutex};
+
+    #[test]
+    fn test_drain_wallet() {
+        let test_wpkh = "wpkh(cVpPVruEDdmutPzisEsYvtST1usBR3ntr8pXSyt6D2YYqXRyPcFW)";
+        let (funded_wallet, _, _) = get_funded_wallet(test_wpkh);
+        let test_wallet = Wallet {
+            inner_mutex: Mutex::new(funded_wallet),
+        };
+        let drain_to_address = "tb1ql7w62elx9ucw4pj5lgw4l028hmuw80sndtntxt".to_string();
+        let drain_to_script = crate::Address::new(drain_to_address, Network::Testnet)
+            .unwrap()
+            .script_pubkey();
+        let tx_builder = TxBuilder::new()
+            .drain_wallet()
+            .drain_to(drain_to_script.clone());
+        assert!(tx_builder.drain_wallet);
+        assert_eq!(tx_builder.drain_to, Some(drain_to_script.0.clone()));
+
+        let tx_builder_result = tx_builder.finish(&test_wallet).unwrap();
+        let psbt = tx_builder_result.psbt.inner.lock().unwrap().clone();
+        let tx_details = tx_builder_result.transaction_details;
+
+        // confirm one input with 50,000 sats
+        assert_eq!(psbt.inputs.len(), 1);
+        let input_value = psbt
+            .inputs
+            .get(0)
+            .cloned()
+            .unwrap()
+            .non_witness_utxo
+            .unwrap()
+            .output
+            .get(0)
+            .unwrap()
+            .value;
+        assert_eq!(input_value, 50_000_u64);
+
+        // confirm one output to correct address with all sats - fee
+        assert_eq!(psbt.outputs.len(), 1);
+        let output_address = Address::from_script(
+            &psbt
+                .unsigned_tx
+                .output
+                .get(0)
+                .cloned()
+                .unwrap()
+                .script_pubkey,
+            Network::Testnet.into(),
+        )
+        .unwrap();
+        assert_eq!(
+            output_address,
+            Address::from_str("tb1ql7w62elx9ucw4pj5lgw4l028hmuw80sndtntxt")
+                .unwrap()
+                .assume_checked()
+        );
+        let output_value = psbt.unsigned_tx.output.get(0).cloned().unwrap().value;
+        assert_eq!(output_value, 49_890_u64); // input - fee
+
+        assert_eq!(
+            tx_details.txid,
+            "312f1733badab22dc26b8dcbc83ba5629fb7b493af802e8abe07d865e49629c5"
+        );
+        assert_eq!(tx_details.received, 0);
+        assert_eq!(tx_details.sent, 50000);
+        assert!(tx_details.fee.is_some());
+        assert_eq!(tx_details.fee.unwrap(), 110);
+        assert!(tx_details.confirmation_time.is_none());
+    }
+
+    #[test]
+    fn test_peek_reset_address() {
+        let test_wpkh = "wpkh(tprv8hwWMmPE4BVNxGdVt3HhEERZhondQvodUY7Ajyseyhudr4WabJqWKWLr4Wi2r26CDaNCQhhxEftEaNzz7dPGhWuKFU4VULesmhEfZYyBXdE/0/*)";
+        let descriptor = Descriptor::new(test_wpkh.to_string(), Network::Regtest).unwrap();
+        let change_descriptor = Descriptor::new(
+            test_wpkh.to_string().replace("/0/*", "/1/*"),
+            Network::Regtest,
+        )
+        .unwrap();
+
+        let wallet = Wallet::new(
+            Arc::new(descriptor),
+            Some(Arc::new(change_descriptor)),
+            Network::Regtest,
+            DatabaseConfig::Memory,
+        )
+        .unwrap();
+
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::Peek { index: 2 })
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1q5g0mq6dkmwzvxscqwgc932jhgcxuqqkjv09tkj"
+        );
+
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::Peek { index: 1 })
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1q0xs7dau8af22rspp4klya4f7lhggcnqfun2y3a"
+        );
+
+        // new index still 0
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::New)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1qqjn9gky9mkrm3c28e5e87t5akd3twg6xezp0tv"
+        );
+
+        // new index now 1
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::New)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1q0xs7dau8af22rspp4klya4f7lhggcnqfun2y3a"
+        );
+
+        // new index now 2
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::New)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1q5g0mq6dkmwzvxscqwgc932jhgcxuqqkjv09tkj"
+        );
+
+        // peek index 1
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::Peek { index: 1 })
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1q0xs7dau8af22rspp4klya4f7lhggcnqfun2y3a"
+        );
+
+        // reset to index 0
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::Reset { index: 0 })
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1qqjn9gky9mkrm3c28e5e87t5akd3twg6xezp0tv"
+        );
+
+        // new index 1 again
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::New)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1q0xs7dau8af22rspp4klya4f7lhggcnqfun2y3a"
+        );
+    }
+
+    #[test]
+    fn test_get_address() {
+        let test_wpkh = "wpkh(tprv8hwWMmPE4BVNxGdVt3HhEERZhondQvodUY7Ajyseyhudr4WabJqWKWLr4Wi2r26CDaNCQhhxEftEaNzz7dPGhWuKFU4VULesmhEfZYyBXdE/0/*)";
+        let descriptor = Descriptor::new(test_wpkh.to_string(), Network::Regtest).unwrap();
+        let change_descriptor = Descriptor::new(
+            test_wpkh.to_string().replace("/0/*", "/1/*"),
+            Network::Regtest,
+        )
+        .unwrap();
+
+        let wallet = Wallet::new(
+            Arc::new(descriptor),
+            Some(Arc::new(change_descriptor)),
+            Network::Regtest,
+            DatabaseConfig::Memory,
+        )
+        .unwrap();
+
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::New)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1qqjn9gky9mkrm3c28e5e87t5akd3twg6xezp0tv"
+        );
+
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::New)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1q0xs7dau8af22rspp4klya4f7lhggcnqfun2y3a"
+        );
+
+        assert_eq!(
+            wallet
+                .get_address(AddressIndex::LastUnused)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1q0xs7dau8af22rspp4klya4f7lhggcnqfun2y3a"
+        );
+
+        assert_eq!(
+            wallet
+                .get_internal_address(AddressIndex::New)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1qpmz73cyx00r4a5dea469j40ax6d6kqyd67nnpj"
+        );
+
+        assert_eq!(
+            wallet
+                .get_internal_address(AddressIndex::New)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1qaux734vuhykww9632v8cmdnk7z2mw5lsf74v6k"
+        );
+
+        assert_eq!(
+            wallet
+                .get_internal_address(AddressIndex::LastUnused)
+                .unwrap()
+                .address
+                .as_string(),
+            "bcrt1qaux734vuhykww9632v8cmdnk7z2mw5lsf74v6k"
+        );
+    }
+
+    #[test]
+    fn test_is_mine() {
+        // is_mine should return true for addresses generated by the wallet
+        let mnemonic: Mnemonic = Mnemonic::from_string("chaos fabric time speed sponsor all flat solution wisdom trophy crack object robot pave observe combine where aware bench orient secret primary cable detect".to_string()).unwrap();
+        let secret_key: DescriptorSecretKey =
+            DescriptorSecretKey::new(Network::Testnet, Arc::new(mnemonic), None);
+        let descriptor: Descriptor = Descriptor::new_bip84(
+            Arc::new(secret_key),
+            KeychainKind::External,
+            Network::Testnet,
+        );
+        let wallet: Wallet = Wallet::new(
+            Arc::new(descriptor),
+            None,
+            Network::Testnet,
+            DatabaseConfig::Memory,
+        )
+        .unwrap();
+
+        let address = wallet.get_address(AddressIndex::New).unwrap();
+        let script: Arc<Script> = address.address.script_pubkey();
+
+        let is_mine_1: bool = wallet.is_mine(script).unwrap();
+        assert!(is_mine_1);
+
+        // is_mine returns false when provided a script that is not in the wallet
+        let other_wpkh = "wpkh(tprv8hwWMmPE4BVNxGdVt3HhEERZhondQvodUY7Ajyseyhudr4WabJqWKWLr4Wi2r26CDaNCQhhxEftEaNzz7dPGhWuKFU4VULesmhEfZYyBXdE/0/*)";
+        let other_descriptor = Descriptor::new(other_wpkh.to_string(), Network::Testnet).unwrap();
+
+        let other_wallet = Wallet::new(
+            Arc::new(other_descriptor),
+            None,
+            Network::Testnet,
+            DatabaseConfig::Memory,
+        )
+        .unwrap();
+
+        let other_address = other_wallet.get_address(AddressIndex::New).unwrap();
+        let other_script: Arc<Script> = other_address.address.script_pubkey();
+        let is_mine_2: bool = wallet.is_mine(other_script).unwrap();
+        assert_matches!(is_mine_2, false);
+    }
+}

bdk-ffi/tests/bindings/test.py

@@ -6,10 +6,5 @@ class TestBdk(unittest.TestCase):
     def test_some_enum(self):
         network = Network.TESTNET
 
-    def test_some_dict(self):
-        a = AddressInfo(index=42, address="testaddress")
-        self.assertEqual(42, a.index)
-        self.assertEqual("testaddress", a.address)
-
 if __name__=='__main__':
     unittest.main()

bdk-ffi/tests/test_generated_bindings.rs

@@ -1,8 +1,5 @@
-uniffi_macros::build_foreign_language_testcases!(
-    ["src/bdk.udl",],
-    [
-        "tests/bindings/test.kts",
-        "tests/bindings/test.swift",
-        "tests/bindings/test.py"
-    ]
+uniffi::build_foreign_language_testcases!(
+    "tests/bindings/test.kts",
+    "tests/bindings/test.swift",
+    "tests/bindings/test.py",
 );

bdk-ffi/uniffi-bindgen.rs

@@ -0,0 +1,3 @@
+fn main() {
+    uniffi::uniffi_bindgen_main()
+}

bdk-jvm/README.md

@@ -1,4 +1,4 @@
-# bdk-android
+# bdk-jvm
 This project builds a .jar package for the JVM platform that provide Kotlin language bindings for the [`bdk`] library. The Kotlin language bindings are created by the `bdk-ffi` project which is included in the root of this repository.
 
 ## How to Use
@@ -19,16 +19,16 @@ import org.bitcoindevkit.*
 
 // ...
 
-val externalDescriptor = "wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/0/*)"
-val internalDescriptor = "wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/1/*)"
+val externalDescriptor = Descriptor("wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/0/*)", Network.TESTNET)
+val internalDescriptor = Descriptor("wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/1/*)", Network.TESTNET)
 
 val databaseConfig = DatabaseConfig.Memory
 
 val blockchainConfig = BlockchainConfig.Electrum(
-        ElectrumConfig("ssl://electrum.blockstream.info:60002", null, 5u, null, 10u, true)
-    )
+    ElectrumConfig("ssl://electrum.blockstream.info:60002", null, 5u, null, 10u, true)
+)
 val wallet = Wallet(externalDescriptor, internalDescriptor, Network.TESTNET, databaseConfig, blockchainConfig)
-val newAddress = wallet.getAddress(AddressIndex.LAST_UNUSED)
+val newAddress = wallet.getAddress(AddressIndex.LastUnused)
 ```
 
 ### Snapshot releases
@@ -38,32 +38,39 @@ repositories {
     maven("https://s01.oss.sonatype.org/content/repositories/snapshots/")
 }
 
-dependencies {
-  implementation("org.bitcoindevkit:bdk-jvm:<version-SNAPSHOT>")
+dependencies { 
+    implementation("org.bitcoindevkit:bdk-jvm:<version-SNAPSHOT>")
 }
 ```
 
-
 ## Example Projects
 * [Tatooine Faucet](https://github.com/thunderbiscuit/tatooine)
 
 ## How to build
 _Note that Kotlin version `1.6.10` or later is required to build the library._
-
-1. Clone this repository.
+1. Install JDK 11. It must be version 11 (not 17), otherwise it won't build. For example, with SDKMAN!:
+```shell
+curl -s "https://get.sdkman.io" | bash
+source "$HOME/.sdkman/bin/sdkman-init.sh"
+sdk install java 11.0.19-tem
+```
+2. Install Rust (note that we are currently building using Rust 1.67.0):
+```shell
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+rustup default 1.67.0
+```
+3. Clone this repository.
 ```shell
 git clone https://github.com/bitcoindevkit/bdk-ffi
 ```
-2. Follow the "General" bdk-ffi ["Getting Started (Developer)"] instructions.
-3. If building on macOS install required intel and m1 jvm targets
+4. If building on macOS install required intel and m1 jvm targets
 ```sh
 rustup target add x86_64-apple-darwin aarch64-apple-darwin
 ```
-4. Build kotlin bindings
- ```sh
- # build JVM library
- ./gradlew buildJvmLib
- ```
+5. Build kotlin bindings
+```sh
+./gradlew buildJvmLib
+```
 
 ## How to publish to your local Maven repo
 ```shell
@@ -83,6 +90,7 @@ and use the `publishToMavenLocal` task without excluding the signing task:
 ```
 
 ## Known issues
+## JNA dependency
 Depending on the JVM version you use, you might not have the JNA dependency on your classpath. The exception thrown will be 
 ```shell
 class file for com.sun.jna.Pointer not found

bdk-jvm/gradle.properties

@@ -1,4 +1,4 @@
 org.gradle.jvmargs=-Xmx1536m
 android.enableJetifier=true
 kotlin.code.style=official
-libraryVersion=0.26.0-SNAPSHOT
+libraryVersion=0.31.1

bdk-jvm/lib/build.gradle.kts

@@ -20,8 +20,8 @@ repositories {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_1_8
-    targetCompatibility = JavaVersion.VERSION_1_8
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
     withSourcesJar()
     withJavadocJar()
 }
@@ -107,4 +107,8 @@ signing {
 // binaries before running the tests
 tasks.withType<KotlinCompile> {
     dependsOn("buildJvmLib")
+
+    kotlinOptions {
+        jvmTarget = "11"
+    }
 }

bdk-jvm/lib/src/test/kotlin/org/bitcoindevkit/JvmLibTest.kt

@@ -46,7 +46,7 @@ class JvmLibTest {
     @Test
     fun memoryWalletNewAddress() {
         val wallet = Wallet(descriptor, null, Network.TESTNET, databaseConfig)
-        val address = wallet.getAddress(AddressIndex.NEW).address
+        val address = wallet.getAddress(AddressIndex.New).address.asString()
         assertEquals("tb1qzg4mckdh50nwdm9hkzq06528rsu73hjxxzem3e", address)
     }
 

bdk-jvm/plugins/src/main/kotlin/org/bitcoindevkit/plugins/Enums.kt

@@ -4,11 +4,13 @@ package org.bitcoindevkit.plugins
 val operatingSystem: OS = when {
     System.getProperty("os.name").contains("mac", ignoreCase = true) -> OS.MAC
     System.getProperty("os.name").contains("linux", ignoreCase = true) -> OS.LINUX
+    System.getProperty("os.name").contains("windows", ignoreCase = true) -> OS.WINDOWS
     else -> OS.OTHER
 }
 
 enum class OS {
     MAC,
     LINUX,
+    WINDOWS,
     OTHER,
 }

bdk-jvm/plugins/src/main/kotlin/org/bitcoindevkit/plugins/UniFfiJvmPlugin.kt

@@ -27,13 +27,20 @@ internal class UniFfiJvmPlugin : Plugin<Project> {
                     val cargoArgs: List<String> = listOf("build", "--profile", "release-smaller", "--target", "aarch64-apple-darwin")
                     args(cargoArgs)
                 }
-            } else if(operatingSystem == OS.LINUX) {
+            } else if (operatingSystem == OS.LINUX) {
                 exec {
                     workingDir("${project.projectDir}/../../bdk-ffi")
                     executable("cargo")
                     val cargoArgs: List<String> = listOf("build", "--profile", "release-smaller", "--target", "x86_64-unknown-linux-gnu")
                     args(cargoArgs)
                 }
+            } else if (operatingSystem == OS.WINDOWS) {
+                exec {
+                    workingDir("${project.projectDir}/../../bdk-ffi")
+                    executable("cargo")
+                    val cargoArgs: List<String> = listOf("build", "--profile", "release-smaller", "--target", "x86_64-pc-windows-msvc")
+                    args(cargoArgs)
+                }
             }
         }
 
@@ -70,13 +77,25 @@ internal class UniFfiJvmPlugin : Plugin<Project> {
                         ext = "so"
                     )
                 )
+            } else if (operatingSystem == OS.WINDOWS) {
+                libsToCopy.add(
+                    CopyMetadata(
+                        targetDir = "x86_64-pc-windows-msvc",
+                        resDir = "win32-x86-64",
+                        ext = "dll"
+                    )
+                )
+            }
+            val libName = when (operatingSystem) {
+                OS.WINDOWS -> "bdkffi"
+                else       -> "libbdkffi"
             }
 
             libsToCopy.forEach {
                 doFirst {
                     copy {
                         with(it) {
-                            from("${project.projectDir}/../../target/${this.targetDir}/release-smaller/libbdkffi.${this.ext}")
+                            from("${project.projectDir}/../../target/${this.targetDir}/release-smaller/${libName}.${this.ext}")
                             into("${project.projectDir}/../../bdk-jvm/lib/src/main/resources/${this.resDir}/")
                         }
                     }
@@ -90,17 +109,10 @@ internal class UniFfiJvmPlugin : Plugin<Project> {
             dependsOn(moveNativeJvmLibs)
 
             workingDir("${project.projectDir}/../../bdk-ffi")
+            val cargoArgs: List<String> = listOf("run", "--bin", "uniffi-bindgen", "generate", "src/bdk.udl", "--language", "kotlin", "--out-dir", "../bdk-jvm/lib/src/main/kotlin", "--no-format")
+
             executable("cargo")
-            args(
-                "run",
-                "--package",
-                "bdk-ffi-bindgen",
-                "--",
-                "--language",
-                "kotlin",
-                "--out-dir",
-                "../bdk-jvm/lib/src/main/kotlin"
-            )
+            args(cargoArgs)
 
             doLast {
                 println("JVM bindings file successfully created")

bdk-python/LICENSE

@@ -1,14 +0,0 @@
-This software is licensed under [Apache 2.0](LICENSE-APACHE) or
-[MIT](LICENSE-MIT), at your option.
-
-Some files retain their own copyright notice, however, for full authorship
-information, see version control history.
-
-Except as otherwise noted in individual files, all files in this repository are
-licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-http://www.apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
-http://opensource.org/licenses/MIT>, at your option.
-
-You may not use, copy, modify, merge, publish, distribute, sublicense, and/or
-sell copies of this software or any files in this repository except in
-accordance with one or both of these licenses.

bdk-python/LICENSE-APACHE

@@ -1,201 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
-
-   Copyright [yyyy] [name of copyright owner]
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

bdk-python/LICENSE-MIT

@@ -1,17 +0,0 @@
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

bdk-python/MANIFEST.in

@@ -0,0 +1,3 @@
+include ./src/bdkpython/libbdkffi.dylib
+include ./src/bdkpython/libbdkffi.so
+include ./src/bdkpython/bdkffi.dll

bdk-python/README.md

@@ -11,10 +11,10 @@ pip install bdkpython
 
 ## Run the tests
 ```shell
-pip3 install --requirement requirements.txt
-bash ./generate.sh
-python3 setup.py --verbose bdist_wheel
-pip3 install ./dist/bdkpython-<yourversion>-py3-none-any.whl
+pip install --requirement requirements.txt
+bash ./scripts/generate-linux.sh # here you should run the script appropriate for your platform
+python setup.py bdist_wheel --verbose
+pip install ./dist/bdkpython-<yourversion>.whl --force-reinstall
 python -m unittest --verbose tests/test_bdk.py
 ```
 
@@ -23,26 +23,14 @@ python -m unittest --verbose tests/test_bdk.py
 # Install dependencies
 pip install --requirement requirements.txt
 
-# Generate the bindings first
-bash generate.sh
+# Generate the bindings (use the script appropriate for your platform)
+bash ./scripts/generate-linux.sh
 
 # Build the wheel
-python3 setup.py --verbose bdist_wheel
-```
-
-## Run tox to build and test locally
-```shell
-# install dev requirements
-pip install --requirement requirements-dev.txt
-
-# build bindings glue code (located at .bdk-python/src/bdkpython/bdk.py)
-source ./generate.sh
-
-# build and test
-tox -vv
+python setup.py --verbose bdist_wheel
 ```
 
 ## Install locally
 ```shell
-pip install ./dist/bdkpython-<yourversion>-py3-none-any.whl
+pip install ./dist/bdkpython-<yourversion>.whl
 ```

bdk-python/generate.sh

@@ -1,11 +0,0 @@
-#!/usr/bin/env bash
-
-set -euo pipefail
-
-SCRIPT_DIR=$(dirname "$(realpath $0)")
-PY_SRC="${SCRIPT_DIR}/src/bdkpython/"
-
-echo "Generating bdk.py..."
-# GENERATE_PYTHON_BINDINGS_OUT="$PY_SRC" GENERATE_PYTHON_BINDINGS_FIXUP_LIB_PATH=bdkffi cargo run --manifest-path ./bdk-ffi/Cargo.toml --release --bin generate --features generate-python
-# BDKFFI_BINDGEN_PYTHON_FIXUP_PATH=bdkffi cargo run --manifest-path ./bdk-ffi/Cargo.toml --package bdk-ffi-bindgen -- --language python --udl-file ./bdk-ffi/src/bdk.udl --out-dir ./src/bdkpython/
-BDKFFI_BINDGEN_OUTPUT_DIR="$PY_SRC" BDKFFI_BINDGEN_PYTHON_FIXUP_PATH=bdkffi cargo run --manifest-path ../bdk-ffi/Cargo.toml --package bdk-ffi-bindgen -- --language python --udl-file ../bdk-ffi/src/bdk.udl

bdk-python/requirements.txt

@@ -1,3 +1,4 @@
 semantic-version==2.9.0
-setuptools-rust==1.1.2
 typing_extensions==4.0.1
+setuptools==67.4.0
+wheel==0.38.4

bdk-python/scripts/generate-linux.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+${PYBIN}/python --version
+${PYBIN}/pip install -r requirements.txt
+
+echo "Generating bdk.py..."
+cd ../bdk-ffi/
+cargo run --bin uniffi-bindgen generate src/bdk.udl --language python --out-dir ../bdk-python/src/bdkpython/ --no-format
+
+echo "Generating native binaries..."
+rustup default 1.67.0
+cargo build --profile release-smaller
+
+echo "Copying linux libbdkffi.so..."
+cp ../target/release-smaller/libbdkffi.so ../bdk-python/src/bdkpython/libbdkffi.so
+
+echo "All done!"

bdk-python/scripts/generate-macos-arm64.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+python3 --version
+pip install --user -r requirements.txt
+
+echo "Generating bdk.py..."
+cd ../bdk-ffi/
+cargo run --bin uniffi-bindgen generate src/bdk.udl --language python --out-dir ../bdk-python/src/bdkpython/ --no-format
+
+echo "Generating native binaries..."
+rustup default 1.67.0
+rustup target add aarch64-apple-darwin
+cargo build --profile release-smaller --target aarch64-apple-darwin
+
+echo "Copying libraries libbdkffi.dylib..."
+cp ../target/aarch64-apple-darwin/release-smaller/libbdkffi.dylib ../bdk-python/src/bdkpython/libbdkffi.dylib
+
+echo "All done!"

bdk-python/scripts/generate-macos-x86_64.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+python3 --version
+pip install --user -r requirements.txt
+
+echo "Generating bdk.py..."
+cd ../bdk-ffi/
+cargo run --bin uniffi-bindgen generate src/bdk.udl --language python --out-dir ../bdk-python/src/bdkpython/ --no-format
+
+echo "Generating native binaries..."
+rustup target add x86_64-apple-darwin
+cargo build --profile release-smaller --target x86_64-apple-darwin
+
+echo "Copying libraries libbdkffi.dylib..."
+cp ../target/x86_64-apple-darwin/release-smaller/libbdkffi.dylib ../bdk-python/src/bdkpython/libbdkffi.dylib
+
+echo "All done!"

bdk-python/scripts/generate-windows.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+python3 --version
+pip install --user -r requirements.txt
+
+echo "Generating bdk.py..."
+cd ../bdk-ffi/
+cargo run --bin uniffi-bindgen generate src/bdk.udl --language python --out-dir ../bdk-python/src/bdkpython/ --no-format
+
+echo "Generating native binaries..."
+rustup default 1.67.0
+rustup target add x86_64-pc-windows-msvc
+cargo build --profile release-smaller --target x86_64-pc-windows-msvc
+
+echo "Copying libraries bdkffi.dll..."
+cp ../target/x86_64-pc-windows-msvc/release-smaller/bdkffi.dll ../bdk-python/src/bdkpython/bdkffi.dll
+
+echo "All done!"

bdk-python/setup.py

@@ -1,9 +1,6 @@
 #!/usr/bin/env python
 
-import os
-
 from setuptools import setup
-from setuptools_rust import Binding, RustExtension
 
 LONG_DESCRIPTION = """# bdkpython
 The Python language bindings for the [Bitcoin Dev Kit](https://github.com/bitcoindevkit).
@@ -40,7 +37,7 @@ wallet = bdk.Wallet(
          )
 
 # print new receive address
-address_info = wallet.get_address(bdk.AddressIndex.LAST_UNUSED)
+address_info = wallet.get_address(bdk.AddressIndex.LAST_UNUSED())
 address = address_info.address
 index = address_info.index
 print(f"New BIP84 testnet address: {address} at index {index}")
@@ -52,23 +49,20 @@ balance = wallet.get_balance()
 print(f"Wallet balance is: {balance.total}")
 """
 
-rust_ext = RustExtension(
-    target="bdkpython.bdkffi",
-    path="../bdk-ffi/Cargo.toml",
-    binding=Binding.NoBinding,
-)
-
 setup(
-    name='bdkpython',
-    version='0.26.0.dev0',
+    name="bdkpython",
+    version="0.31.0",
     description="The Python language bindings for the Bitcoin Development Kit",
     long_description=LONG_DESCRIPTION,
-    long_description_content_type='text/markdown',
-    rust_extensions=[rust_ext],
+    long_description_content_type="text/markdown",
+    include_package_data = True,
     zip_safe=False,
-    packages=['bdkpython'],
-    package_dir={'bdkpython': './src/bdkpython'},
-    url="https://github.com/bitcoindevkit/bdk-python",
+    packages=["bdkpython"],
+    package_dir={"bdkpython": "./src/bdkpython"},
+    url="https://github.com/bitcoindevkit/bdk-ffi",
     author="Alekos Filini <alekos.filini@gmail.com>, Steve Myers <steve@notmandatory.org>",
     license="MIT or Apache 2.0",
+    # This is required to ensure the library name includes the python version, abi, and platform tags
+    # See issue #350 for more information
+    has_ext_modules=lambda: True,
 )

bdk-python/src/bdkpython/__init__.py

@@ -1 +1 @@
-from bdkpython.bdk import *
+from bdkpython.bdk import *

bdk-python/tests/test_bdk.py

@@ -26,8 +26,8 @@ class TestSimpleBip84Wallet(unittest.TestCase):
             network=bdk.Network.TESTNET,
             database_config=db_config
         )
-        address_info = wallet.get_address(bdk.AddressIndex.LAST_UNUSED)
-        address = address_info.address
+        address_info = wallet.get_address(bdk.AddressIndex.LAST_UNUSED())
+        address = address_info.address.as_string()
         # print(f"New address is {address}")
         assert address == "tb1qzg4mckdh50nwdm9hkzq06528rsu73hjxxzem3e", f"Wrong address {address}, should be tb1qzg4mckdh50nwdm9hkzq06528rsu73hjxxzem3e"
 
@@ -43,6 +43,21 @@ class TestSimpleBip84Wallet(unittest.TestCase):
         # print(f"Balance is {balance.total} sat")
         assert balance.total > 0, "Balance is 0, send testnet coins to tb1qzg4mckdh50nwdm9hkzq06528rsu73hjxxzem3e"
 
-
+    def test_output_address_from_script_pubkey(self):
+        wallet = bdk.Wallet(
+            descriptor=descriptor,
+            change_descriptor=None,
+            network=bdk.Network.TESTNET,
+            database_config=db_config,
+        )
+        wallet.sync(blockchain, None)
+        first_tx = list(wallet.list_transactions(True))[0]
+        assert first_tx.txid == '35d3de8dd429ec4c9684168c1fbb9a4fb6db6f2ce89be214a024657a73ef4908'
+        
+        output1, output2 = list(first_tx.transaction.output())
+        
+        assert bdk.Address.from_script(output1.script_pubkey, bdk.Network.TESTNET).as_string() == 'tb1qw6ly2te8k9vy2mwj3g6gx82hj7hc8f5q3vry8t'
+        assert bdk.Address.from_script(output2.script_pubkey, bdk.Network.TESTNET).as_string() == 'tb1qzsvpnmme78yl60j7ldh9aqvhvxr4mz7mjpmh22'
+        
 if __name__ == '__main__':
     unittest.main()

bdk-python/tox.ini

@@ -10,7 +10,7 @@ deps =
     -rrequirements.txt
     -rrequirements-dev.txt
 commands = 
-    python3 setup.py -v build
-    python3 setup.py -v install
+    python3 setup.py build --verbose
+    python3 setup.py install --verbose
     pytest --verbose --override-ini console_output_style=count
-    python3 setup.py --verbose bdist_wheel
+    python3 setup.py bdist_wheel --verbose

bdk-swift/Package.swift

@@ -29,7 +29,9 @@ let package = Package(
         .binaryTarget(name: "bdkFFI", path: "./bdkFFI.xcframework"),
         .target(
             name: "BitcoinDevKit",
-            dependencies: ["bdkFFI"]),
+            dependencies: ["bdkFFI"],
+            swiftSettings: [.unsafeFlags(["-suppress-warnings"])]
+        ),
         .testTarget(
             name: "BitcoinDevKitTests",
             dependencies: ["BitcoinDevKit"]),

bdk-swift/Tests/BitcoinDevKitTests/BitcoinDevKitTests.swift

@@ -10,6 +10,6 @@ final class BitcoinDevKitTests: XCTestCase {
         let databaseConfig = DatabaseConfig.memory
         let wallet = try Wallet.init(descriptor: desc, changeDescriptor: nil, network: Network.regtest, databaseConfig: databaseConfig)
         let addressInfo = try wallet.getAddress(addressIndex: AddressIndex.new)
-        XCTAssertEqual(addressInfo.address, "bcrt1qzg4mckdh50nwdm9hkzq06528rsu73hjxytqkxs")
+        XCTAssertEqual(addressInfo.address.asString(), "bcrt1qzg4mckdh50nwdm9hkzq06528rsu73hjxytqkxs")
     }
 }

bdk-swift/bdkFFI.xcframework/Info.plist

@@ -16,6 +16,8 @@
 			</array>
 			<key>SupportedPlatform</key>
 			<string>macos</string>
+		    	<key>LSMinimumSystemVersion</key>
+   			<string>12.0</string>
 		</dict>
 		<dict>
 			<key>LibraryIdentifier</key>
@@ -31,6 +33,8 @@
 			<string>ios</string>
 			<key>SupportedPlatformVariant</key>
 			<string>simulator</string>
+		    	<key>MinimumOSVersion</key>
+   			<string>15.0</string>
 		</dict>
 		<dict>
 			<key>LibraryIdentifier</key>
@@ -43,6 +47,8 @@
 			</array>
 			<key>SupportedPlatform</key>
 			<string>ios</string>
+			<key>MinimumOSVersion</key>
+   			<string>15.0</string>
 		</dict>
 	</array>
 	<key>CFBundlePackageType</key>

bdk-swift/bdkFFI.xcframework/ios-arm64/bdkFFI.framework/Info.plist

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleIdentifier</key>
+    <string>com.bitcoindevkit.bdkFFI</string>
+    <key>CFBundleName</key>
+    <string>bdkFFI</string>
+    <key>CFBundleVersion</key>
+    <string>0.31.1</string>
+    <key>CFBundleShortVersionString</key>
+    <string>0.31.1</string>
+    <key>CFBundleExecutable</key>
+    <string>bdkFFI</string>
+    <key>MinimumOSVersion</key>
+    <string>100</string>
+</dict>
+</plist>

bdk-swift/bdkFFI.xcframework/ios-arm64_x86_64-simulator/bdkFFI.framework/Info.plist

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleIdentifier</key>
+    <string>com.bitcoindevkit.bdkFFI</string>
+    <key>CFBundleName</key>
+    <string>bdkFFI</string>
+    <key>CFBundleVersion</key>
+    <string>0.31.1</string>
+    <key>CFBundleShortVersionString</key>
+    <string>0.31.1</string>
+    <key>CFBundleExecutable</key>
+    <string>bdkFFI</string>
+    <key>MinimumOSVersion</key>
+    <string>15.0</string>
+</dict>
+</plist>

bdk-swift/bdkFFI.xcframework/macos-arm64_x86_64/bdkFFI.framework/Info.plist

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleIdentifier</key>
+    <string>com.bitcoindevkit.bdkFFI</string>
+    <key>CFBundleName</key>
+    <string>bdkFFI</string>
+    <key>CFBundleVersion</key>
+    <string>0.31.1</string>
+    <key>CFBundleShortVersionString</key>
+    <string>0.31.1</string>
+    <key>CFBundleExecutable</key>
+    <string>bdkFFI</string>
+    <key>LSMinimumSystemVersion</key>
+    <string>12.0</string>
+</dict>
+</plist>

bdk-swift/build-local-swift.sh

@@ -5,25 +5,25 @@
 #
 # Run the script from the repo root directory, ie: ./bdk-swift/build-local-swift.sh
 
-rustup install nightly-x86_64-apple-darwin
-rustup component add rust-src --toolchain nightly-x86_64-apple-darwin
+rustup install nightly-2023-04-10
+rustup component add rust-src --toolchain nightly-2023-04-10
 rustup target add aarch64-apple-ios x86_64-apple-ios
-rustup target add aarch64-apple-ios-sim --toolchain nightly
+rustup target add aarch64-apple-ios-sim --toolchain nightly-2023-04-10
 rustup target add aarch64-apple-darwin x86_64-apple-darwin
 
 pushd bdk-ffi
 mkdir -p Sources/BitcoinDevKit
-cargo run --package bdk-ffi-bindgen -- --language swift --out-dir ../bdk-swift/Sources/BitcoinDevKit
+cargo run --bin uniffi-bindgen generate src/bdk.udl --language swift --out-dir ../bdk-swift/Sources/BitcoinDevKit --no-format
 popd
 
 cargo build --package bdk-ffi --profile release-smaller --target x86_64-apple-darwin
 cargo build --package bdk-ffi --profile release-smaller --target aarch64-apple-darwin
 cargo build --package bdk-ffi --profile release-smaller --target x86_64-apple-ios
 cargo build --package bdk-ffi --profile release-smaller --target aarch64-apple-ios
-cargo +nightly build --package bdk-ffi --release -Z build-std --target aarch64-apple-ios-sim
+cargo +nightly-2023-04-10 build --package bdk-ffi --profile release-smaller --target aarch64-apple-ios-sim
 
 mkdir -p target/lipo-ios-sim/release-smaller
-lipo target/aarch64-apple-ios-sim/release/libbdkffi.a target/x86_64-apple-ios/release-smaller/libbdkffi.a -create -output target/lipo-ios-sim/release-smaller/libbdkffi.a
+lipo target/aarch64-apple-ios-sim/release-smaller/libbdkffi.a target/x86_64-apple-ios/release-smaller/libbdkffi.a -create -output target/lipo-ios-sim/release-smaller/libbdkffi.a
 mkdir -p target/lipo-macos/release-smaller
 lipo target/aarch64-apple-darwin/release-smaller/libbdkffi.a target/x86_64-apple-darwin/release-smaller/libbdkffi.a -create -output target/lipo-macos/release-smaller/libbdkffi.a