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Never delete spent utxos from the database

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A `is_spent` field is added to LocalUtxo; when a txo is spent we set
this field to true instead of deleting the entire utxo from the
database.
This allows us to create txs double-spending txs already in blockchain.
Listunspent won't return spent utxos, effectively excluding them from the
coin selection and balance calculation
This commit is contained in:
Daniela Brozzoni
2022-03-09 16:15:34 +01:00
parent 3e4678d8e3
commit f2f0efc0b3
13 changed files with 155 additions and 66 deletions
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CHANGELOG.md
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@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- `verify` flag removed from `TransactionDetails`.
- Add `get_internal_address` to allow you to get internal addresses just as you get external addresses.
- added `ensure_addresses_cached` to `Wallet` to let offline wallets load and cache addresses in their database
- Add `is_spent` field to `LocalUtxo`; when we notice that a utxo has been spent we set `is_spent` field to true instead of deleting it from the db.
### Sync API change