Merge branch 'master' into knorrium/update-node-matrix

[accelerator] display payment errors, auto reload after 10 secs instead of 3 secs

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
     if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
     strategy:
       matrix:
-        node: ["20", "21"]
+        node: ["20", "22"]
         flavor: ["dev", "prod"]
       fail-fast: false
     runs-on: "ubuntu-latest"
@@ -160,7 +160,7 @@ jobs:
     if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
     strategy:
       matrix:
-        node: ["20", "21"]
+        node: ["20", "22"]
         flavor: ["dev", "prod"]
       fail-fast: false
     runs-on: "ubuntu-latest"
@@ -251,17 +251,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        module: ["mempool", "liquid"]
-        include:
-          - module: "mempool"
-            spec: |
-              cypress/e2e/mainnet/*.spec.ts
-              cypress/e2e/signet/*.spec.ts
-              cypress/e2e/testnet4/*.spec.ts
-          - module: "liquid"
-            spec: |
-              cypress/e2e/liquid/liquid.spec.ts
-              cypress/e2e/liquidtestnet/liquidtestnet.spec.ts
+        module: ["mempool", "liquid", "testnet4"]
 
     name: E2E tests for ${{ matrix.module }}
     steps:
@@ -273,7 +263,7 @@ jobs:
       - name: Setup node
         uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 22
           cache: "npm"
           cache-dependency-path: ${{ matrix.module }}/frontend/package-lock.json
 
@@ -310,8 +300,10 @@ jobs:
 
       - name: Unzip assets before building (src/resources)
         run: unzip -o promo-video-assets.zip -d ${{ matrix.module }}/frontend/src/resources/promo-video
-      
+
+      # mempool
       - name: Chrome browser tests (${{ matrix.module }})
+        if: ${{ matrix.module == 'mempool' }}
         uses: cypress-io/github-action@v5
         with:
           tag: ${{ github.event_name }}
@@ -322,7 +314,9 @@ jobs:
           wait-on-timeout: 120
           record: true
           parallel: true
-          spec: ${{ matrix.spec }}
+          spec: |
+            cypress/e2e/mainnet/*.spec.ts
+            cypress/e2e/signet/*.spec.ts
           group: Tests on Chrome (${{ matrix.module }})
           browser: "chrome"
           ci-build-id: "${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}"
@@ -332,6 +326,56 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}
 
+      # liquid
+      - name: Chrome browser tests (${{ matrix.module }})
+        if: ${{ matrix.module == 'liquid' }}
+        uses: cypress-io/github-action@v5
+        with:
+          tag: ${{ github.event_name }}
+          working-directory: ${{ matrix.module }}/frontend
+          build: npm run config:defaults:${{ matrix.module }}
+          start: npm run start:local-staging
+          wait-on: "http://localhost:4200"
+          wait-on-timeout: 120
+          record: true
+          parallel: true
+          spec: |
+            cypress/e2e/liquid/liquid.spec.ts
+            cypress/e2e/liquidtestnet/liquidtestnet.spec.ts
+          group: Tests on Chrome (${{ matrix.module }})
+          browser: "chrome"
+          ci-build-id: "${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}"
+        env:
+          COMMIT_INFO_MESSAGE: ${{ github.event.pull_request.title }}
+          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}
+
+      # testnet
+      - name: Chrome browser tests (${{ matrix.module }})
+        if: ${{ matrix.module == 'testnet4' }}
+        uses: cypress-io/github-action@v5
+        with:
+          tag: ${{ github.event_name }}
+          working-directory: ${{ matrix.module }}/frontend
+          build: npm run config:defaults:mempool
+          start: npm run start:local-staging
+          wait-on: "http://localhost:4200"
+          wait-on-timeout: 120
+          record: true
+          parallel: true
+          spec: |
+            cypress/e2e/testnet4/*.spec.ts
+          group: Tests on Chrome (${{ matrix.module }})
+          browser: "chrome"
+          ci-build-id: "${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}"
+        env:
+          CYPRESS_REROUTE_TESTNET: true
+          COMMIT_INFO_MESSAGE: ${{ github.event.pull_request.title }}
+          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}
+
   validate_docker_json:
     if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
     runs-on: "ubuntu-latest"
@@ -359,4 +403,4 @@ jobs:
       - name: Validate JSON syntax
         run: |
           cat mempool-config.json | jq
-        working-directory: docker/docker/backend
+        working-directory: docker/docker/backend

.nvmrc

@@ -1 +1 @@
-v20.8.0
+v22.13.0

backend/mempool-config.sample.json

@@ -155,6 +155,10 @@
     "API": "https://mempool.space/api/v1/services",
     "ACCELERATIONS": false
   },
+  "STRATUM": {
+    "ENABLED": false,
+    "API": "http://localhost:1234"
+  },
   "FIAT_PRICE": {
     "ENABLED": true,
     "PAID": false,

backend/src/__fixtures__/mempool-config.template.json

@@ -151,5 +151,9 @@
     "ENABLED": true,
     "PAID": false,
     "API_KEY": "__MEMPOOL_CURRENCY_API_KEY__"
+  },
+  "STRATUM": {
+    "ENABLED": false,
+    "API": "http://localhost:1234"
   }
 }

backend/src/__tests__/config.test.ts

@@ -159,6 +159,11 @@ describe('Mempool Backend Config', () => {
         PAID: false,
         API_KEY: '',
       });
+
+      expect(config.STRATUM).toStrictEqual({
+        ENABLED: false,
+        API: 'http://localhost:1234',
+      });
     });
   });
 

backend/src/api/rbf-cache.ts

@@ -119,7 +119,11 @@ class RbfCache {
 
 
   public add(replaced: MempoolTransactionExtended[], newTxExtended: MempoolTransactionExtended): void {
-    if (!newTxExtended || !replaced?.length || this.txs.has(newTxExtended.txid)) {
+    if ( !newTxExtended
+      || !replaced?.length
+      || this.txs.has(newTxExtended.txid)
+      || !(replaced.some(tx => !this.replacedBy.has(tx.txid)))
+    ) {
       return;
     }
 

backend/src/api/services/stratum.ts

@@ -0,0 +1,105 @@
+import { WebSocket } from 'ws';
+import logger from '../../logger';
+import config from '../../config';
+import websocketHandler from '../websocket-handler';
+
+export interface StratumJob {
+  pool: number;
+  height: number;
+  coinbase: string;
+  scriptsig: string;
+  reward: number;
+  jobId: string;
+  extraNonce: string;
+  extraNonce2Size: number;
+  prevHash: string;
+  coinbase1: string;
+  coinbase2: string;
+  merkleBranches: string[];
+  version: string;
+  bits: string;
+  time: string;
+  timestamp: number;
+  cleanJobs: boolean;
+  received: number;
+}
+
+function isStratumJob(obj: any): obj is StratumJob {
+  return obj
+    && typeof obj === 'object'
+    && 'pool' in obj
+    && 'prevHash' in obj
+    && 'height' in obj
+    && 'received' in obj
+    && 'version' in obj
+    && 'timestamp' in obj
+    && 'bits' in obj
+    && 'merkleBranches' in obj
+    && 'cleanJobs' in obj;
+}
+
+class StratumApi {
+  private ws: WebSocket | null = null;
+  private runWebsocketLoop: boolean = false;
+  private startedWebsocketLoop: boolean = false;
+  private websocketConnected: boolean = false;
+  private jobs: Record<string, StratumJob> = {};
+
+  public constructor() {}
+
+  public getJobs(): Record<string, StratumJob> {
+    return this.jobs;
+  }
+
+  private handleWebsocketMessage(msg: any): void {
+    if (isStratumJob(msg)) {
+      this.jobs[msg.pool] = msg;
+      websocketHandler.handleNewStratumJob(this.jobs[msg.pool]);
+    }
+  }
+
+  public async connectWebsocket(): Promise<void> {
+    if (!config.STRATUM.ENABLED) {
+      return;
+    }
+    this.runWebsocketLoop = true;
+    if (this.startedWebsocketLoop) {
+      return;
+    }
+    while (this.runWebsocketLoop) {
+      this.startedWebsocketLoop = true;
+      if (!this.ws) {
+        this.ws = new WebSocket(`${config.STRATUM.API}`);
+        this.websocketConnected = true;
+
+        this.ws.on('open', () => {
+          logger.info('Stratum websocket opened');
+        });
+
+        this.ws.on('error', (error) => {
+          logger.err('Stratum websocket error: ' + error);
+          this.ws = null;
+          this.websocketConnected = false;
+        });
+
+        this.ws.on('close', () => {
+          logger.info('Stratum websocket closed');
+          this.ws = null;
+          this.websocketConnected = false;
+        });
+
+        this.ws.on('message', (data, isBinary) => {
+          try {
+            const parsedMsg = JSON.parse((isBinary ? data : data.toString()) as string);
+            this.handleWebsocketMessage(parsedMsg);
+          } catch (e) {
+            logger.warn('Failed to parse stratum websocket message: ' + (e instanceof Error ? e.message : e));
+          }
+        });
+      }
+      await new Promise(resolve => setTimeout(resolve, 5000));
+    }
+  }
+}
+
+export default new StratumApi();

backend/src/api/websocket-handler.ts

@@ -38,6 +38,7 @@ interface AddressTransactions {
 import bitcoinSecondClient from './bitcoin/bitcoin-second-client';
 import { calculateMempoolTxCpfp } from './cpfp';
 import { getRecentFirstSeen } from '../utils/file-read';
+import stratumApi, { StratumJob } from './services/stratum';
 
 // valid 'want' subscriptions
 const wantable = [
@@ -403,6 +404,16 @@ class WebsocketHandler {
             delete client['track-mempool'];
           }
 
+          if (parsedMessage && parsedMessage['track-stratum'] != null) {
+            if (parsedMessage['track-stratum']) {
+              const sub = parsedMessage['track-stratum'];
+              client['track-stratum'] = sub;
+              response['stratumJobs'] = this.socketData['stratumJobs'];
+            } else {
+              client['track-stratum'] = false;
+            }
+          }
+
           if (Object.keys(response).length) {
             client.send(this.serializeResponse(response));
           }
@@ -1384,6 +1395,23 @@ class WebsocketHandler {
     await statistics.runStatistics();
   }
 
+  public handleNewStratumJob(job: StratumJob): void {
+    this.updateSocketDataFields({ 'stratumJobs': stratumApi.getJobs() });
+
+    for (const server of this.webSocketServers) {
+      server.clients.forEach((client) => {
+        if (client.readyState !== WebSocket.OPEN) {
+          return;
+        }
+        if (client['track-stratum'] && (client['track-stratum'] === 'all' || client['track-stratum'] === job.pool)) {
+          client.send(JSON.stringify({
+            'stratumJob': job
+        }));
+        }
+      });
+    }
+  }
+
   // takes a dictionary of JSON serialized values
   // and zips it together into a valid JSON object
   private serializeResponse(response): string {

backend/src/config.ts

@@ -165,6 +165,10 @@ interface IConfig {
   WALLETS: {
     ENABLED: boolean;
     WALLETS: string[];
+  },
+  STRATUM: {
+    ENABLED: boolean;
+    API: string;
   }
 }
 
@@ -332,6 +336,10 @@ const defaults: IConfig = {
     'ENABLED': false,
     'WALLETS': [],
   },
+  'STRATUM': {
+    'ENABLED': false,
+    'API': 'http://localhost:1234',
+  }
 };
 
 class Config implements IConfig {
@@ -354,6 +362,7 @@ class Config implements IConfig {
   REDIS: IConfig['REDIS'];
   FIAT_PRICE: IConfig['FIAT_PRICE'];
   WALLETS: IConfig['WALLETS'];
+  STRATUM: IConfig['STRATUM'];
 
   constructor() {
     const configs = this.merge(configFromFile, defaults);
@@ -376,6 +385,7 @@ class Config implements IConfig {
     this.REDIS = configs.REDIS;
     this.FIAT_PRICE = configs.FIAT_PRICE;
     this.WALLETS = configs.WALLETS;
+    this.STRATUM = configs.STRATUM;
   }
 
   merge = (...objects: object[]): IConfig => {

backend/src/index.ts

@@ -48,6 +48,7 @@ import accelerationRoutes from './api/acceleration/acceleration.routes';
 import aboutRoutes from './api/about.routes';
 import mempoolBlocks from './api/mempool-blocks';
 import walletApi from './api/services/wallets';
+import stratumApi from './api/services/stratum';
 
 class Server {
   private wss: WebSocket.Server | undefined;
@@ -320,6 +321,9 @@ class Server {
     loadingIndicators.setProgressChangedCallback(websocketHandler.handleLoadingChanged.bind(websocketHandler));
 
     accelerationApi.connectWebsocket();
+    if (config.STRATUM.ENABLED) {
+      stratumApi.connectWebsocket();
+    }
   }
 
   setUpHttpApiRoutes(): void {

docker/backend/mempool-config.json

@@ -148,6 +148,10 @@
     "API": "__MEMPOOL_SERVICES_API__",
     "ACCELERATIONS": __MEMPOOL_SERVICES_ACCELERATIONS__
   },
+  "STRATUM": {
+    "ENABLED": __STRATUM_ENABLED__,
+    "API": "__STRATUM_API__"
+  },
   "REDIS": {
     "ENABLED": __REDIS_ENABLED__,
     "UNIX_SOCKET_PATH": "__REDIS_UNIX_SOCKET_PATH__",

docker/backend/start.sh

@@ -149,6 +149,10 @@ __REPLICATION_SERVERS__=${REPLICATION_SERVERS:=[]}
 __MEMPOOL_SERVICES_API__=${MEMPOOL_SERVICES_API:="https://mempool.space/api/v1/services"}
 __MEMPOOL_SERVICES_ACCELERATIONS__=${MEMPOOL_SERVICES_ACCELERATIONS:=false}
 
+# STRATUM
+__STRATUM_ENABLED__=${STRATUM_ENABLED:=false}
+__STRATUM_API__=${STRATUM_API:="http://localhost:1234"}
+
 # REDIS
 __REDIS_ENABLED__=${REDIS_ENABLED:=false}
 __REDIS_UNIX_SOCKET_PATH__=${REDIS_UNIX_SOCKET_PATH:=""}
@@ -300,6 +304,10 @@ sed -i "s!__REPLICATION_SERVERS__!${__REPLICATION_SERVERS__}!g" mempool-config.j
 sed -i "s!__MEMPOOL_SERVICES_API__!${__MEMPOOL_SERVICES_API__}!g" mempool-config.json
 sed -i "s!__MEMPOOL_SERVICES_ACCELERATIONS__!${__MEMPOOL_SERVICES_ACCELERATIONS__}!g" mempool-config.json
 
+# STRATUM
+sed -i "s!__STRATUM_ENABLED__!${__STRATUM_ENABLED__}!g" mempool-config.json
+sed -i "s!__STRATUM_API__!${__STRATUM_API__}!g" mempool-config.json
+
 # REDIS
 sed -i "s!__REDIS_ENABLED__!${__REDIS_ENABLED__}!g" mempool-config.json
 sed -i "s!__REDIS_UNIX_SOCKET_PATH__!${__REDIS_UNIX_SOCKET_PATH__}!g" mempool-config.json

frontend/cypress/e2e/mainnet/mainnet.spec.ts

@@ -344,7 +344,9 @@ describe('Mainnet', () => {
       cy.visit('/');
       cy.waitForSkeletonGone();
 
-      cy.changeNetwork('testnet4');
+      //TODO(knorrium): add a check for the proxied server
+      // cy.changeNetwork('testnet4');
+
       cy.changeNetwork('signet');
       cy.changeNetwork('mainnet');
     });

frontend/mempool-frontend-config.sample.json

@@ -27,5 +27,6 @@
   "ACCELERATOR": false,
   "ACCELERATOR_BUTTON": true,
   "PUBLIC_ACCELERATIONS": false,
+  "STRATUM_ENABLED": false,
   "SERVICES_API": "https://mempool.space/api/v1/services"
 }

frontend/proxy.conf.staging.js

@@ -3,8 +3,10 @@ const fs = require('fs');
 let PROXY_CONFIG = require('./proxy.conf');
 
 PROXY_CONFIG.forEach(entry => {
-  entry.target = entry.target.replace("mempool.space", "mempool-staging.fra.mempool.space");
-  entry.target = entry.target.replace("liquid.network", "liquid-staging.fra.mempool.space");
+  const hostname = process.env.CYPRESS_REROUTE_TESTNET === 'true' ? 'mempool-staging.fra.mempool.space' : 'node201.fmt.mempool.space';
+  console.log(`e2e tests running against ${hostname}`);
+  entry.target = entry.target.replace("mempool.space", hostname);
+  entry.target = entry.target.replace("liquid.network", "liquid-staging.fmt.mempool.space");
 });
 
 module.exports = PROXY_CONFIG;

frontend/src/app/components/accelerate-checkout/accelerate-checkout.component.html

@@ -1,10 +1,18 @@
-<div class="box card w-100" style="background: var(--box-bg)" id=acceleratePreviewAnchor>
+<div class="box card w-100 accelerate-checkout-inner" [class.input-disabled]="isCheckoutLocked > 0" style="background: var(--box-bg)" id=acceleratePreviewAnchor>
   @if (accelerateError) {
-    <div class="row mb-1 text-center">
-      <div class="col-sm">
-        <h1 style="font-size: larger;" i18n="accelerator.sorry-error-title">Sorry, something went wrong!</h1>
+    @if (accelerateError.includes('Payment declined')) {
+      <div class="row mb-1 text-center">
+        <div class="col-sm">
+          <h1 style="font-size: larger;">{{ accelerateError }}</h1>
+        </div>
       </div>
-    </div>
+    } @else {
+      <div class="row mb-1 text-center">
+        <div class="col-sm">
+          <h1 style="font-size: larger;" i18n="accelerator.sorry-error-title">Sorry, something went wrong!</h1>
+        </div>
+      </div>
+    }
     <div class="row text-center mt-1">
       <div class="col-sm">
         <div class="d-flex flex-row justify-content-center align-items-center">
@@ -361,7 +369,7 @@
         <div class="row text-center justify-content-center mx-2">
           <p i18n="accelerator.payment-to-mempool-space">Payment to mempool.space for acceleration of txid <a [routerLink]="'/tx/' + tx.txid" target="_blank">{{ tx.txid.substr(0, 10) }}..{{ tx.txid.substr(-10) }}</a></p>
         </div>
-        @if (canPayWithBalance || !(canPayWithBitcoin || canPayWithCashapp)) {
+        @if (canPayWithBalance || !(canPayWithBitcoin || canPayWithCashapp || canPayWithApplePay || canPayWithGooglePay)) {
           <div class="row">
             <div class="col-sm text-center d-flex flex-column justify-content-center align-items-center">
               <p><ng-container i18n="accelerator.your-account-will-be-debited">Your account will be debited no more than</ng-container>&nbsp;<small style="font-family: monospace;">{{ cost | number }}</small>&nbsp;<span class="symbol" i18n="shared.sats">sats</span></p>
@@ -484,6 +492,11 @@
           </div>
           }
         </div>
+        @if (isTokenizing > 0) {
+          <div class="d-flex flex-row justify-content-center">
+            <div class="ml-2 spinner-border text-light" style="width: 25px; height: 25px"></div>
+          </div>
+        }
       </div>
     </div>
 

frontend/src/app/components/accelerate-checkout/accelerate-checkout.component.scss

@@ -8,6 +8,13 @@
   color: var(--green)
 }
 
+.accelerate-checkout-inner {
+  &.input-disabled {
+    pointer-events: none;
+    opacity: 0.75;
+  }
+}
+
 .paymentMethod {
   padding: 10px;
   background-color: var(--secondary);

frontend/src/app/components/accelerate-checkout/accelerate-checkout.component.ts

@@ -76,6 +76,8 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
 
   calculating = true;
   processing = false;
+  isCheckoutLocked = 0; // reference counter, 0 = unlocked, >0 = locked
+  isTokenizing = 0; // reference counter, 0 = false, >0 = true
   selectedOption: 'wait' | 'accel';
   cantPayReason = '';
   quoteError = ''; // error fetching estimate or initial data
@@ -154,7 +156,7 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
         this.accelerateError = null;
         this.timePaid = 0;
         this.btcpayInvoiceFailed = false;
-        this.moveToStep('summary');
+        this.moveToStep('summary', true);
       } else {
         this.auth = auth;
       }
@@ -163,11 +165,11 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
 
     const urlParams = new URLSearchParams(window.location.search);
     if (urlParams.get('cash_request_id')) { // Redirected from cashapp
-      this.moveToStep('processing');
+      this.moveToStep('processing', true);
       this.insertSquare();
       this.setupSquare();
     } else {
-      this.moveToStep('summary');
+      this.moveToStep('summary', true);
     }
 
     this.conversionsSubscription = this.stateService.conversions$.subscribe(
@@ -192,14 +194,17 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
     }
     if (changes.accelerating && this.accelerating) {
       if (this.step === 'processing' || this.step === 'paid') {
-        this.moveToStep('success');
+        this.moveToStep('success', true);
       } else { // Edge case where the transaction gets accelerated by someone else or on another session
         this.closeModal();
       }
     }
   }
 
-  moveToStep(step: CheckoutStep): void {
+  moveToStep(step: CheckoutStep, force: boolean = false): void {
+    if (this.isCheckoutLocked > 0 && !force) {
+      return;
+    }
     this.processing = false;
     this._step = step;
     if (this.timeoutTimer) {
@@ -242,7 +247,7 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
 
   closeModal(): void {
     this.completed.emit(true);
-    this.moveToStep('summary');
+    this.moveToStep('summary', true);
   }
 
   /**
@@ -393,7 +398,7 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
         this.audioService.playSound('ascend-chime-cartoon');
         this.showSuccess = true;
         this.estimateSubscription.unsubscribe();
-        this.moveToStep('paid');
+        this.moveToStep('paid', true);
       },
       error: (response) => {
         this.processing = false;
@@ -503,56 +508,75 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
           }
           this.loadingApplePay = false;
           applePayButton.addEventListener('click', async event => {
+            if (this.isCheckoutLocked > 0 || this.isTokenizing > 0) {
+              return;
+            }
             event.preventDefault();
-            const tokenResult = await this.applePay.tokenize();
-            if (tokenResult?.status === 'OK') {
-              const card = tokenResult.details?.card;
-              if (!card || !card.brand || !card.expMonth || !card.expYear || !card.last4) {
-                console.error(`Cannot retreive payment card details`);
-                this.accelerateError = 'apple_pay_no_card_details';
-                this.processing = false;
-                return;
-              }
-              const cardTag = md5(`${card.brand}${card.expMonth}${card.expYear}${card.last4}`.toLowerCase());
-              this.servicesApiService.accelerateWithApplePay$(
-                this.tx.txid,
-                tokenResult.token,
-                cardTag,
-                `accelerator-${this.tx.txid.substring(0, 15)}-${Math.round(new Date().getTime() / 1000)}`,
-                costUSD
-              ).subscribe({
-                next: () => {
+            try {
+              // lock the checkout UI and show a loading spinner until the square modals are finished
+              this.isCheckoutLocked++;
+              this.isTokenizing++;
+              const tokenResult = await this.applePay.tokenize();
+              if (tokenResult?.status === 'OK') {
+                const card = tokenResult.details?.card;
+                if (!card || !card.brand || !card.expMonth || !card.expYear || !card.last4) {
+                  console.error(`Cannot retreive payment card details`);
+                  this.accelerateError = 'apple_pay_no_card_details';
                   this.processing = false;
-                  this.apiService.logAccelerationRequest$(this.tx.txid).subscribe();
-                  this.audioService.playSound('ascend-chime-cartoon');
-                  if (this.applePay) {
-                    this.applePay.destroy();
-                  }
-                  setTimeout(() => {
-                    this.moveToStep('paid');
-                  }, 1000);
-                },
-                error: (response) => {
-                  this.processing = false;
-                  this.accelerateError = response.error;
-                  if (!(response.status === 403 && response.error === 'not_available')) {
-                    setTimeout(() => {
-                      // Reset everything by reloading the page :D, can be improved
-                      const urlParams = new URLSearchParams(window.location.search);
-                      window.location.assign(window.location.toString().replace(`?cash_request_id=${urlParams.get('cash_request_id')}`, ``));
-                    }, 3000);
-                  }
+                  return;
                 }
-              });
-            } else {
-              this.processing = false;
-              let errorMessage = `Tokenization failed with status: ${tokenResult.status}`;
-              if (tokenResult.errors) {
-                errorMessage += ` and errors: ${JSON.stringify(
-                  tokenResult.errors,
-                )}`;
+                const cardTag = md5(`${card.brand}${card.expMonth}${card.expYear}${card.last4}`.toLowerCase());
+                // keep checkout in loading state until the acceleration request completes
+                this.isTokenizing++;
+                this.isCheckoutLocked++;
+                this.servicesApiService.accelerateWithApplePay$(
+                  this.tx.txid,
+                  tokenResult.token,
+                  cardTag,
+                  `accelerator-${this.tx.txid.substring(0, 15)}-${Math.round(new Date().getTime() / 1000)}`,
+                  costUSD
+                ).subscribe({
+                  next: () => {
+                    this.processing = false;
+                    this.apiService.logAccelerationRequest$(this.tx.txid).subscribe();
+                    this.audioService.playSound('ascend-chime-cartoon');
+                    if (this.applePay) {
+                      this.applePay.destroy();
+                    }
+                    setTimeout(() => {
+                      this.isTokenizing--;
+                      this.isCheckoutLocked--;
+                      this.moveToStep('paid', true);
+                    }, 1000);
+                  },
+                  error: (response) => {
+                    this.processing = false;
+                    this.accelerateError = response.error;
+                    if (!(response.status === 403 && response.error === 'not_available')) {
+                      setTimeout(() => {
+                        this.isTokenizing--;
+                        this.isCheckoutLocked--;
+                        // Reset everything by reloading the page :D, can be improved
+                        const urlParams = new URLSearchParams(window.location.search);
+                        window.location.assign(window.location.toString().replace(`?cash_request_id=${urlParams.get('cash_request_id')}`, ``));
+                      }, 10000);
+                    }
+                  }
+                });
+              } else {
+                this.processing = false;
+                let errorMessage = `Tokenization failed with status: ${tokenResult.status}`;
+                if (tokenResult.errors) {
+                  errorMessage += ` and errors: ${JSON.stringify(
+                    tokenResult.errors,
+                  )}`;
+                }
+                throw new Error(errorMessage);
               }
-              throw new Error(errorMessage);
+            } finally {
+              // always unlock the checkout once we're finished
+              this.isTokenizing--;
+              this.isCheckoutLocked--;
             }
           });
         } catch (e) {
@@ -602,64 +626,84 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
         this.loadingGooglePay = false;
 
         document.getElementById('google-pay-button').addEventListener('click', async event => {
+          if (this.isCheckoutLocked > 0 || this.isTokenizing > 0) {
+            return;
+          }
           event.preventDefault();
-          const tokenResult = await this.googlePay.tokenize();
-          if (tokenResult?.status === 'OK') {
-            const card = tokenResult.details?.card;
-            if (!card || !card.brand || !card.expMonth || !card.expYear || !card.last4) {
-              console.error(`Cannot retreive payment card details`);
-              this.accelerateError = 'apple_pay_no_card_details';
-              this.processing = false;
-              return;
-            }
-            const verificationToken = await this.$verifyBuyer(this.payments, tokenResult.token, tokenResult.details, costUSD.toFixed(2));
-            if (!verificationToken) {
-              console.error(`SCA verification failed`);
-              this.accelerateError = 'SCA Verification Failed. Payment Declined.';
-              this.processing = false;
-              return;
-            }
-            const cardTag = md5(`${card.brand}${card.expMonth}${card.expYear}${card.last4}`.toLowerCase());
-            this.servicesApiService.accelerateWithGooglePay$(
-              this.tx.txid,
-              tokenResult.token,
-              verificationToken,
-              cardTag,
-              `accelerator-${this.tx.txid.substring(0, 15)}-${Math.round(new Date().getTime() / 1000)}`,
-              costUSD
-            ).subscribe({
-              next: () => {
+          try {
+            // lock the checkout UI and show a loading spinner until the square modals are finished
+            this.isCheckoutLocked++;
+            this.isTokenizing++;
+            const tokenResult = await this.googlePay.tokenize();
+            if (tokenResult?.status === 'OK') {
+              const card = tokenResult.details?.card;
+              if (!card || !card.brand || !card.expMonth || !card.expYear || !card.last4) {
+                console.error(`Cannot retreive payment card details`);
+                this.accelerateError = 'apple_pay_no_card_details';
                 this.processing = false;
-                this.apiService.logAccelerationRequest$(this.tx.txid).subscribe();
-                this.audioService.playSound('ascend-chime-cartoon');
-                if (this.googlePay) {
-                  this.googlePay.destroy();
-                }
-                setTimeout(() => {
-                  this.moveToStep('paid');
-                }, 1000);
-              },
-              error: (response) => {
-                this.processing = false;
-                this.accelerateError = response.error;
-                if (!(response.status === 403 && response.error === 'not_available')) {
-                  setTimeout(() => {
-                    // Reset everything by reloading the page :D, can be improved
-                    const urlParams = new URLSearchParams(window.location.search);
-                    window.location.assign(window.location.toString().replace(`?cash_request_id=${urlParams.get('cash_request_id')}`, ``));
-                  }, 3000);
-                }
+                return;
               }
-            });
-          } else {
-            this.processing = false;
-            let errorMessage = `Tokenization failed with status: ${tokenResult.status}`;
-            if (tokenResult.errors) {
-              errorMessage += ` and errors: ${JSON.stringify(
-                tokenResult.errors,
-              )}`;
+              const verificationToken = await this.$verifyBuyer(this.payments, tokenResult.token, tokenResult.details, costUSD.toFixed(2));
+              if (!verificationToken || !verificationToken.token) {
+                console.error(`SCA verification failed`);
+                this.accelerateError = 'SCA Verification Failed. Payment Declined.';
+                this.processing = false;
+                return;
+              }
+              const cardTag = md5(`${card.brand}${card.expMonth}${card.expYear}${card.last4}`.toLowerCase());
+              // keep checkout in loading state until the acceleration request completes
+              this.isCheckoutLocked++;
+              this.isTokenizing++;
+              this.servicesApiService.accelerateWithGooglePay$(
+                this.tx.txid,
+                tokenResult.token,
+                verificationToken.token,
+                cardTag,
+                `accelerator-${this.tx.txid.substring(0, 15)}-${Math.round(new Date().getTime() / 1000)}`,
+                costUSD,
+                verificationToken.userChallenged
+              ).subscribe({
+                next: () => {
+                  this.processing = false;
+                  this.apiService.logAccelerationRequest$(this.tx.txid).subscribe();
+                  this.audioService.playSound('ascend-chime-cartoon');
+                  if (this.googlePay) {
+                    this.googlePay.destroy();
+                  }
+                  setTimeout(() => {
+                    this.isTokenizing--;
+                    this.isCheckoutLocked--;
+                    this.moveToStep('paid', true);
+                  }, 1000);
+                },
+                error: (response) => {
+                  this.processing = false;
+                  this.accelerateError = response.error;
+                  this.isTokenizing--;
+                  this.isCheckoutLocked--;
+                  if (!(response.status === 403 && response.error === 'not_available')) {
+                    setTimeout(() => {
+                      // Reset everything by reloading the page :D, can be improved
+                      const urlParams = new URLSearchParams(window.location.search);
+                      window.location.assign(window.location.toString().replace(`?cash_request_id=${urlParams.get('cash_request_id')}`, ``));
+                    }, 10000);
+                  }
+                }
+              });
+            } else {
+              this.processing = false;
+              let errorMessage = `Tokenization failed with status: ${tokenResult.status}`;
+              if (tokenResult.errors) {
+                errorMessage += ` and errors: ${JSON.stringify(
+                  tokenResult.errors,
+                )}`;
+              }
+              throw new Error(errorMessage);
             }
-            throw new Error(errorMessage);
+          } finally {
+            // always unlock the checkout once we're finished
+            this.isTokenizing--;
+            this.isCheckoutLocked--;
           }
         });
       }
@@ -726,7 +770,7 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
                   this.cashAppPay.destroy();
                 }
                 setTimeout(() => {
-                  this.moveToStep('paid');
+                  this.moveToStep('paid', true);
                   if (window.history.replaceState) {
                     const urlParams = new URLSearchParams(window.location.search);
                     window.history.replaceState(null, null, window.location.toString().replace(`?cash_request_id=${urlParams.get('cash_request_id')}`, ''));
@@ -741,7 +785,7 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
                     // Reset everything by reloading the page :D, can be improved
                     const urlParams = new URLSearchParams(window.location.search);
                     window.location.assign(window.location.toString().replace(`?cash_request_id=${urlParams.get('cash_request_id')}`, ``));
-                  }, 3000);
+                  }, 10000);
                 }
               }
             });
@@ -752,9 +796,9 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
   }
 
   /**
-   * Required in SCA Mandated Regions: Learn more at https://developer.squareup.com/docs/sca-overview
+   * https://developer.squareup.com/docs/sca-overview
    */
-  async $verifyBuyer(payments, token, details, amount) {
+  async $verifyBuyer(payments, token, details, amount): Promise<{token: string, userChallenged: boolean}> {
     const verificationDetails = {
       amount: amount,
       currencyCode: 'USD',
@@ -774,7 +818,7 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
       token,
       verificationDetails,
     );
-    return verificationResults.token;
+    return verificationResults;
   }
 
   /**
@@ -800,7 +844,7 @@ export class AccelerateCheckout implements OnInit, OnDestroy {
     this.apiService.logAccelerationRequest$(this.tx.txid).subscribe();
     this.audioService.playSound('ascend-chime-cartoon');
     this.estimateSubscription.unsubscribe();
-    this.moveToStep('paid');
+    this.moveToStep('paid', true);
   }
 
   isLoggedIn(): boolean {

frontend/src/app/components/acceleration/acceleration-fees-graph/acceleration-fees-graph.component.ts

@@ -46,6 +46,8 @@ export class AccelerationFeesGraphComponent implements OnInit, OnChanges, OnDest
 
   aggregatedHistory$: Observable<any>;
   statsSubscription: Subscription;
+  aggregatedHistorySubscription: Subscription;
+  fragmentSubscription: Subscription;
   isLoading = true;
   formatNumber = formatNumber;
   timespan = '';
@@ -79,8 +81,8 @@ export class AccelerationFeesGraphComponent implements OnInit, OnChanges, OnDest
     }
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
     this.radioGroupForm.controls.dateSpan.setValue(this.miningWindowPreference);
-    
-    this.route.fragment.subscribe((fragment) => {
+
+    this.fragmentSubscription = this.route.fragment.subscribe((fragment) => {
       if (['24h', '3d', '1w', '1m', '3m', 'all'].indexOf(fragment) > -1) {
         this.radioGroupForm.controls.dateSpan.setValue(fragment, { emitEvent: false });
       }
@@ -113,7 +115,7 @@ export class AccelerationFeesGraphComponent implements OnInit, OnChanges, OnDest
       share(),
     );
 
-    this.aggregatedHistory$.subscribe();
+    this.aggregatedHistorySubscription = this.aggregatedHistory$.subscribe();
   }
 
   ngOnChanges(changes: SimpleChanges): void {
@@ -335,8 +337,8 @@ export class AccelerationFeesGraphComponent implements OnInit, OnChanges, OnDest
   }
 
   ngOnDestroy(): void {
-    if (this.statsSubscription) {
-      this.statsSubscription.unsubscribe();
-    }
+    this.aggregatedHistorySubscription?.unsubscribe();
+    this.fragmentSubscription?.unsubscribe();
+    this.statsSubscription?.unsubscribe();
   }
 }

frontend/src/app/components/address-graph/address-graph.component.ts

@@ -478,25 +478,30 @@ export class AddressGraphComponent implements OnChanges, OnDestroy {
   }
 
   extendSummary(summary) {
-    let extendedSummary = summary.slice();
+    const extendedSummary = summary.slice();
 
     // Add a point at today's date to make the graph end at the current time
     extendedSummary.unshift({ time: Date.now() / 1000, value: 0 });
-    extendedSummary.reverse();
 
-    let oneHour = 60 * 60;
+    let maxTime = Date.now() / 1000;
+
+    const oneHour = 60 * 60;
     // Fill gaps longer than interval
     for (let i = 0; i < extendedSummary.length - 1; i++) {
-      let hours = Math.floor((extendedSummary[i + 1].time - extendedSummary[i].time) / oneHour);      
+      if (extendedSummary[i].time > maxTime) {
+        extendedSummary[i].time = maxTime - 30;
+      }
+      maxTime = extendedSummary[i].time;
+      const hours = Math.floor((extendedSummary[i].time - extendedSummary[i + 1].time) / oneHour);
       if (hours > 1) {
         for (let j = 1; j < hours; j++) {
-          let newTime = extendedSummary[i].time + oneHour * j;
+          const newTime = extendedSummary[i].time - oneHour * j;
           extendedSummary.splice(i + j, 0, { time: newTime, value: 0 });
         }
         i += hours - 1;
       }
     }
 
-    return extendedSummary.reverse();
+    return extendedSummary;
   }
 }

frontend/src/app/components/app/app.component.ts

@@ -41,7 +41,7 @@ export class AppComponent implements OnInit {
 
   @HostListener('document:keydown', ['$event'])
   handleKeyboardEvents(event: KeyboardEvent) {
-    if (event.target instanceof HTMLInputElement) {
+    if (event.target instanceof HTMLInputElement || event.target instanceof HTMLTextAreaElement) {
       return;
     }
     // prevent arrow key horizontal scrolling

frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts

@@ -172,13 +172,19 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
   ngOnDestroy(): void {
     if (this.animationFrameRequest) {
       cancelAnimationFrame(this.animationFrameRequest);
-      clearTimeout(this.animationHeartBeat);
     }
+    clearTimeout(this.animationHeartBeat);
     if (this.canvas) {
       this.canvas.nativeElement.removeEventListener('webglcontextlost', this.handleContextLost);
       this.canvas.nativeElement.removeEventListener('webglcontextrestored', this.handleContextRestored);
-      this.themeChangedSubscription?.unsubscribe();
     }
+    if (this.scene) {
+      this.scene.destroy();
+    }
+    this.vertexArray.destroy();
+    this.vertexArray = null;
+    this.themeChangedSubscription?.unsubscribe();
+    this.searchSubscription?.unsubscribe();
   }
 
   clear(direction): void {
@@ -447,7 +453,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
     }
     this.applyQueuedUpdates();
     // skip re-render if there's no change to the scene
-    if (this.scene && this.gl) {
+    if (this.scene && this.gl && this.vertexArray) {
       /* SET UP SHADER UNIFORMS */
       // screen dimensions
       this.gl.uniform2f(this.gl.getUniformLocation(this.shaderProgram, 'screenSize'), this.displayWidth, this.displayHeight);
@@ -489,9 +495,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
     if (this.running && this.scene && now <= (this.scene.animateUntil + 500)) {
       this.doRun();
     } else {
-      if (this.animationHeartBeat) {
-        clearTimeout(this.animationHeartBeat);
-      }
+      clearTimeout(this.animationHeartBeat);
       this.animationHeartBeat = window.setTimeout(() => {
         this.start();
       }, 1000);

frontend/src/app/components/block-overview-graph/fast-vertex-array.ts

@@ -19,6 +19,7 @@ export class FastVertexArray {
   freeSlots: number[];
   lastSlot: number;
   dirty = false;
+  destroyed = false;
 
   constructor(length, stride) {
     this.length = length;
@@ -32,6 +33,9 @@ export class FastVertexArray {
   }
 
   insert(sprite: TxSprite): number {
+    if (this.destroyed) {
+      return;
+    }
     this.count++;
 
     let position;
@@ -45,11 +49,14 @@ export class FastVertexArray {
       }
     }
     this.sprites[position] = sprite;
-    return position;
     this.dirty = true;
+    return position;
   }
 
   remove(index: number): void {
+    if (this.destroyed) {
+      return;
+    }
     this.count--;
     this.clearData(index);
     this.freeSlots.push(index);
@@ -61,20 +68,26 @@ export class FastVertexArray {
   }
 
   setData(index: number, dataChunk: number[]): void {
+    if (this.destroyed) {
+      return;
+    }
     this.data.set(dataChunk, (index * this.stride));
     this.dirty = true;
   }
 
-  clearData(index: number): void {
+  private clearData(index: number): void {
     this.data.fill(0, (index * this.stride), ((index + 1) * this.stride));
     this.dirty = true;
   }
 
   getData(index: number): Float32Array {
+    if (this.destroyed) {
+      return;
+    }
     return this.data.subarray(index, this.stride);
   }
 
-  expand(): void {
+  private expand(): void {
     this.length *= 2;
     const newData = new Float32Array(this.length * this.stride);
     newData.set(this.data);
@@ -82,7 +95,7 @@ export class FastVertexArray {
     this.dirty = true;
   }
 
-  compact(): void {
+  private compact(): void {
     // New array length is the smallest power of 2 larger than the sprite count (but no smaller than 512)
     const newLength = Math.max(512, Math.pow(2, Math.ceil(Math.log2(this.count))));
     if (newLength !== this.length) {
@@ -110,4 +123,13 @@ export class FastVertexArray {
   getVertexData(): Float32Array {
     return this.data;
   }
+
+  destroy(): void {
+    this.data = null;
+    this.sprites = null;
+    this.freeSlots = null;
+    this.lastSlot = 0;
+    this.dirty = false;
+    this.destroyed = true;
+  }
 }

frontend/src/app/components/block-view/block-view.component.ts

@@ -116,7 +116,7 @@ export class BlockViewComponent implements OnInit, OnDestroy {
         this.isLoadingBlock = false;
         this.isLoadingOverview = true;
       }),
-      shareReplay(1)
+      shareReplay({ bufferSize: 1, refCount: true })
     );
 
     this.overviewSubscription = block$.pipe(
@@ -176,5 +176,8 @@ export class BlockViewComponent implements OnInit, OnDestroy {
     if (this.queryParamsSubscription) {
       this.queryParamsSubscription.unsubscribe();
     }
+    if (this.blockGraph) {
+      this.blockGraph.destroy();
+    }
   }
 }

frontend/src/app/components/block/block-preview.component.ts

@@ -117,7 +117,7 @@ export class BlockPreviewComponent implements OnInit, OnDestroy {
         this.openGraphService.waitOver('block-data-' + this.rawId);
       }),
       throttleTime(50, asyncScheduler, { leading: true, trailing: true }),
-      shareReplay(1)
+      shareReplay({ bufferSize: 1, refCount: true })
     );
 
     this.overviewSubscription = block$.pipe(

frontend/src/app/components/block/block.component.ts

@@ -1,8 +1,8 @@
 import { Component, OnInit, OnDestroy, ViewChildren, QueryList, ChangeDetectorRef } from '@angular/core';
 import { Location } from '@angular/common';
-import { ActivatedRoute, ParamMap, Router } from '@angular/router';
+import { ActivatedRoute, ParamMap, Params, Router } from '@angular/router';
 import { ElectrsApiService } from '@app/services/electrs-api.service';
-import { switchMap, tap, throttleTime, catchError, map, shareReplay, startWith, filter } from 'rxjs/operators';
+import { switchMap, tap, throttleTime, catchError, map, shareReplay, startWith, filter, take } from 'rxjs/operators';
 import { Observable, of, Subscription, asyncScheduler, EMPTY, combineLatest, forkJoin } from 'rxjs';
 import { StateService } from '@app/services/state.service';
 import { SeoService } from '@app/services/seo.service';
@@ -68,6 +68,7 @@ export class BlockComponent implements OnInit, OnDestroy {
   paginationMaxSize = window.matchMedia('(max-width: 670px)').matches ? 3 : 5;
   numUnexpected: number = 0;
   mode: 'projected' | 'actual' = 'projected';
+  currentQueryParams: Params;
 
   overviewSubscription: Subscription;
   accelerationsSubscription: Subscription;
@@ -80,8 +81,8 @@ export class BlockComponent implements OnInit, OnDestroy {
   timeLtr: boolean;
   childChangeSubscription: Subscription;
   auditPrefSubscription: Subscription;
+  isAuditEnabledSubscription: Subscription;
   oobSubscription: Subscription;
-  
   priceSubscription: Subscription;
   blockConversion: Price;
 
@@ -118,7 +119,7 @@ export class BlockComponent implements OnInit, OnDestroy {
     this.setAuditAvailable(this.auditSupported);
 
     if (this.auditSupported) {
-      this.isAuditEnabledFromParam().subscribe(auditParam => {
+      this.isAuditEnabledSubscription = this.isAuditEnabledFromParam().subscribe(auditParam => {
         if (this.auditParamEnabled) {
           this.auditModeEnabled = auditParam;
         } else {
@@ -281,7 +282,7 @@ export class BlockComponent implements OnInit, OnDestroy {
         }
       }),
       throttleTime(300, asyncScheduler, { leading: true, trailing: true }),
-      shareReplay(1)
+      shareReplay({ bufferSize: 1, refCount: true })
     );
 
     this.overviewSubscription = this.block$.pipe(
@@ -363,6 +364,7 @@ export class BlockComponent implements OnInit, OnDestroy {
       .subscribe((network) => this.network = network);
 
     this.queryParamsSubscription = this.route.queryParams.subscribe((params) => {
+      this.currentQueryParams = params;
       if (params.showDetails === 'true') {
         this.showDetails = true;
       } else {
@@ -414,6 +416,7 @@ export class BlockComponent implements OnInit, OnDestroy {
   ngOnDestroy(): void {
     this.stateService.markBlock$.next({});
     this.overviewSubscription?.unsubscribe();
+    this.accelerationsSubscription?.unsubscribe();
     this.keyNavigationSubscription?.unsubscribe();
     this.blocksSubscription?.unsubscribe();
     this.cacheBlocksSubscription?.unsubscribe();
@@ -421,8 +424,16 @@ export class BlockComponent implements OnInit, OnDestroy {
     this.queryParamsSubscription?.unsubscribe();
     this.timeLtrSubscription?.unsubscribe();
     this.childChangeSubscription?.unsubscribe();
-    this.priceSubscription?.unsubscribe();
+    this.auditPrefSubscription?.unsubscribe();
+    this.isAuditEnabledSubscription?.unsubscribe();
     this.oobSubscription?.unsubscribe();
+    this.priceSubscription?.unsubscribe();
+    this.blockGraphProjected.forEach(graph => {
+      graph.destroy();
+    });
+    this.blockGraphActual.forEach(graph => {
+      graph.destroy();
+    });
   }
 
   // TODO - Refactor this.fees/this.reward for liquid because it is not
@@ -733,19 +744,18 @@ export class BlockComponent implements OnInit, OnDestroy {
   toggleAuditMode(): void {
     this.stateService.hideAudit.next(this.auditModeEnabled);
 
-    this.route.queryParams.subscribe(params => {
-      const queryParams = { ...params };
-      delete queryParams['audit'];
+    const queryParams = { ...this.currentQueryParams };
+    delete queryParams['audit'];
 
-      let newUrl = this.router.url.split('?')[0];
-      const queryString = new URLSearchParams(queryParams).toString();
-      if (queryString) {
-        newUrl += '?' + queryString;
-      }
-  
-      this.location.replaceState(newUrl);
-    });
+    let newUrl = this.router.url.split('?')[0];
+    const queryString = new URLSearchParams(queryParams).toString();
+    if (queryString) {
+      newUrl += '?' + queryString;
+    }
+    this.location.replaceState(newUrl);
 
+    // avoid duplicate subscriptions
+    this.auditPrefSubscription?.unsubscribe();
     this.auditPrefSubscription = this.stateService.hideAudit.subscribe((hide) => {
       this.auditModeEnabled = !hide;
       this.showAudit = this.auditAvailable && this.auditModeEnabled;
@@ -762,7 +772,7 @@ export class BlockComponent implements OnInit, OnDestroy {
     return this.route.queryParams.pipe(
       map(params => {
         this.auditParamEnabled = 'audit' in params;
-        
+
         return this.auditParamEnabled ? !(params['audit'] === 'false') : true;
       })
     );

frontend/src/app/components/custom-dashboard/custom-dashboard.component.html

@@ -281,9 +281,11 @@
           <div class="col" style="max-height: 410px" [style.order]="isMobile && widget.mobileOrder || 8">
             <div class="card">
               <div class="card-body">
-                <span class="title-link">
+                <a class="title-link mb-0" style="margin-top: -2px" href="" [routerLink]="['/wallet/' + widget.props.wallet | relativeUrl]">
                   <h5 class="card-title d-inline" i18n="dashboard.treasury-transactions">Treasury Transactions</h5>
-                </span>
+                  <span>&nbsp;</span>
+                  <fa-icon [icon]="['fas', 'external-link-alt']" [fixedWidth]="true" style="vertical-align: text-top; font-size: 13px; color: var(--title-fg)"></fa-icon>
+                </a>
                 <app-address-transactions-widget [addressSummary$]="walletSummary$"></app-address-transactions-widget>
               </div>
             </div>

frontend/src/app/components/eight-blocks/eight-blocks.component.ts

@@ -162,6 +162,9 @@ export class EightBlocksComponent implements OnInit, OnDestroy {
     this.cacheBlocksSubscription?.unsubscribe();
     this.networkChangedSubscription?.unsubscribe();
     this.queryParamsSubscription?.unsubscribe();
+    this.blockGraphs.forEach(graph => {
+      graph.destroy();
+    });
   }
 
   shiftTestBlocks(): void {

frontend/src/app/components/mempool-block-overview/mempool-block-overview.component.ts

@@ -120,6 +120,7 @@ export class MempoolBlockOverviewComponent implements OnInit, OnDestroy, OnChang
   }
 
   ngOnDestroy(): void {
+    this.blockGraph?.destroy();
     this.blockSub.unsubscribe();
     this.timeLtrSubscription.unsubscribe();
     this.websocketService.stopTrackMempoolBlock();

frontend/src/app/components/pool/pool.component.html

@@ -10,7 +10,7 @@
       <h1 class="m-0 pt-1 pt-md-0">{{ poolStats.pool.name }}</h1>
     </div>
 
-    <div class="box">
+    <div class="box pool-details">
       <div class="row">
 
         <div class="col-lg-6">
@@ -173,7 +173,119 @@
     <div class="spinner-border text-light"></div>
   </div>
 
+  <!-- Stratum Job -->
+  <ng-container *ngIf="(job$ | async) as job;">
+    <h2 i18n="pool.next_block">Next block</h2>
+    <div class="box mb-3">
+      <div class="row" >
+        <div class="col">
+          <table class="table table-borderless table-striped">
+            <tbody>
+              <tr>
+                <td>
+                  <table class="job-table table table-xs table-borderless table-fixed table-data">
+                    <thead>
+                      <tr>
+                        <th class="data-title clip text-center height" i18n="latest-blocks.height">Height</th>
+                        <th class="data-title clip text-center expected" i18n="next-block.expected-time">Expected</th>
+                        <th class="data-title clip text-center reward" i18n="latest-blocks.reward">Reward</th>
+                        <th class="data-title clip text-center timestamp" i18n="next-block.timestamp">Timestamp</th>
+                      </tr>
+                    </thead>
+                    <tbody>
+                      <tr>
+                        <td class="text-center height">
+                          {{ job.height }}
+                        </td>
+                        <td class="text-center expected">
+                          <ng-container *ngIf="(expectedBlockTime$ | async) as expectedBlockTime; else expectedPlaceholder">
+                            <app-time kind="until" [time]="expectedBlockTime" [fastRender]="false" [fixedRender]="true" [precision]="1" minUnit="minute"></app-time>
+                          </ng-container>
+                          <ng-template #expectedPlaceholder>~</ng-template>
+                        </td>
+                        <td class="text-center reward">
+                          <app-amount [satoshis]="job.reward"></app-amount>
+                        </td>
+                        <td class="text-center timestamp">
+                          <app-timestamp [customFormat]="'yyyy-MM-dd HH:mm:ss'" [unixTime]="job.timestamp" [precision]="1" minUnit="minute" [hideTimeSince]="true"></app-timestamp>
+                        </td>
+                      </tr>
+                    </tbody>
+                  </table>
+                </td>
+              </tr>
+              <tr>
+                <td>
+                  <table class="job-table table table-xs table-borderless table-fixed table-data">
+                    <thead>
+                      <tr>
+                        <th class="data-title clip text-center coinbase" i18n="latest-blocks.coinbasetag">Coinbase tag</th>
+                        <th class="data-title clip text-center clean" i18n="next-block.clean">Clean</th>
+                        <th class="data-title clip text-center prevhash" i18n="next-block.prevhash">Prevhash</th>
+                        <th class="data-title clip text-center job-received" i18n="next-block.job-received">Job Received</th>
+                      </tr>
+                    </thead>
+                    <tbody>
+                      <tr>
+                        <td class="text-center coinbase">
+                          {{ job.scriptsig | hex2ascii }}
+                        </td>
+                        <td class="text-center clean">
+                          @if (job.cleanJobs) {
+                            <fa-icon [icon]="['fas', 'check-circle']" [fixedWidth]="true"></fa-icon>
+                          } @else {
+                            <fa-icon [icon]="['fas', 'times-circle']" [fixedWidth]="true"></fa-icon>
+                          }
+                        </td>
+                        <td class="text-center prevhash">
+                          <a [routerLink]="['/block' | relativeUrl, job.prevHash]">
+                            <app-truncate [text]="job.prevHash" [lastChars]="8"></app-truncate>
+                          </a>
+                        </td>
+                        <td class="text-center job-received">
+                          <app-timestamp [customFormat]="'yyyy-MM-dd HH:mm:ss'" [unixTime]="job.received / 1000" [precision]="1" minUnit="minute" [hideTimeSince]="true"></app-timestamp>
+                        </td>
+                      </tr>
+                    </tbody>
+                  </table>
+                </td>
+              </tr>
+              <tr>
+                <td>
+                  <table class="stratum-table">
+                    <thead>
+                      <tr>
+                        <th class="data-title clip text-center" [attr.colspan]="Math.max(job.merkleBranches.length, 12)">
+                          <a class="title-link" href="" [routerLink]="['/stratum' | relativeUrl]">
+                            Merkle Branches
+                            <span>&nbsp;</span>
+                            <fa-icon [icon]="['fas', 'external-link-alt']" [fixedWidth]="true" style="vertical-align: text-top; font-size: 13px; color: var(--title-fg)"></fa-icon>
+                          </a>
+                        </th>
+                      </tr>
+                    </thead>
+                    <tbody>
+                      <tr>
+                        @for (branch of job.merkleBranches; track $index) {
+                          <td class="merkle" [style.background-color]="branch ? '#' + branch.slice(0, 6) : ''"></td>
+                        }
+                        @for (_ of [].constructor(Math.max(0, 12 - job.merkleBranches.length)); track $index) {
+                          <td class="merkle empty-branch"></td>
+                        }
+                      </tr>
+                    </tbody>
+                  </table>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+      </div>
+    </div>
+  </ng-container>
+
   <!-- Blocks list -->
+  <h2 i18n="master-page.blocks">Blocks</h2>
   <table class="table table-borderless" [alwaysCallback]="true" infiniteScroll [infiniteScrollDistance]="1.5"
     [infiniteScrollUpDistance]="1.5" [infiniteScrollThrottle]="50" (scrolled)="loadMore()">
     <ng-container *ngIf="blocks$ | async as blocks; else skeleton">

frontend/src/app/components/pool/pool.component.scss

@@ -49,111 +49,110 @@ div.scrollable {
   max-height: 75px;
 }
 
-.box {
-  padding-bottom: 5px;
+.pool-details {
   @media (min-width: 767.98px) {
     min-height: 187px;
   }
-}
 
-.label {
-  width: 25%;
-  @media (min-width: 767.98px) {
-    vertical-align: middle;
+  .label {
+    width: 25%;
+    @media (min-width: 767.98px) {
+      vertical-align: middle;
+    }
+    @media (max-width: 767.98px) {
+      font-weight: bold;
+    }
   }
-  @media (max-width: 767.98px) {
-    font-weight: bold;
+  .label.addresses {
+    vertical-align: top;
+    padding-top: 25px;
+  }
+  .addresses-data {
+    vertical-align: top;
+    font-family: monospace;
+    font-size: 14px;
   }
-}
-.label.addresses {
-  vertical-align: top;
-  padding-top: 25px;
-}
-.addresses-data {
-  vertical-align: top;
-  font-family: monospace;
-  font-size: 14px;
-}
 
-.data {
-  text-align: right;
-  padding-left: 5%;
-  @media (max-width: 992px) {
-    text-align: left;
-    padding-left: 12px;
-  }
-  @media (max-width: 450px) {
+  .data {
     text-align: right;
+    padding-left: 5%;
+    @media (max-width: 992px) {
+      text-align: left;
+      padding-left: 12px;
+    }
+    @media (max-width: 450px) {
+      text-align: right;
+    }
   }
-}
 
-.progress {
-  background-color: var(--secondary);
-}
+  .progress {
+    background-color: var(--secondary);
+  }
 
-.coinbase {
-  width: 20%;
-  @media (max-width: 875px) {
-    display: none;
-  }
-}
-
-.height {
-  width: 10%;
-}
-
-.timestamp {
-  @media (max-width: 875px) {
-    padding-left: 50px;
-  }
-  @media (max-width: 685px) {
-    display: none;
-  }
-}
-
-.mined {
-  width: 13%;
-  @media (max-width: 1100px) {
-    display: none;
-  }
-}
-
-.txs {
-  padding-right: 40px;
-  @media (max-width: 1100px) {
-    padding-right: 10px;
-  }
-  @media (max-width: 875px) {
-    padding-right: 20px;
-  }
-  @media (max-width: 567px) {
-    padding-right: 10px;
-  }
-}
-
-.size {
-  width: 12%;
-  @media (max-width: 1000px) {
-    width: 15%;
-  }
-  @media (max-width: 875px) {
+  .coinbase {
     width: 20%;
+    @media (max-width: 875px) {
+      display: none;
+    }
   }
-  @media (max-width: 650px) {
-    width: 20%;
-  }
-  @media (max-width: 450px) {
-    display: none;
-  }
-}
 
-.scriptmessage {
-	overflow: hidden;
-	display: inline-block;
-	text-overflow: ellipsis;
-	vertical-align: middle;
-	width: auto;
-  text-align: left;
+  .height {
+    width: 10%;
+  }
+
+  .timestamp {
+    @media (max-width: 875px) {
+      padding-left: 50px;
+    }
+    @media (max-width: 685px) {
+      display: none;
+    }
+  }
+
+  .mined {
+    width: 13%;
+    @media (max-width: 1100px) {
+      display: none;
+    }
+  }
+
+  .txs {
+    padding-right: 40px;
+    @media (max-width: 1100px) {
+      padding-right: 10px;
+    }
+    @media (max-width: 875px) {
+      padding-right: 20px;
+    }
+    @media (max-width: 567px) {
+      padding-right: 10px;
+    }
+  }
+
+  .size {
+    width: 12%;
+    @media (max-width: 1000px) {
+      width: 15%;
+    }
+    @media (max-width: 875px) {
+      width: 20%;
+    }
+    @media (max-width: 650px) {
+      width: 20%;
+    }
+    @media (max-width: 450px) {
+      display: none;
+    }
+  }
+
+  .scriptmessage {
+    overflow: hidden;
+    display: inline-block;
+    text-overflow: ellipsis;
+    vertical-align: middle;
+    width: auto;
+    text-align: left;
+  }
 }
 
 .skeleton-loader {
@@ -214,4 +213,55 @@ div.scrollable {
 
 .taller-row {
   height: 75px;
+}
+
+.stratum-table {
+  width: 100%;
+
+  .merkle {
+    width: 100px;
+  }
+
+  .empty-branch {
+    outline: solid 1px white;
+    outline-offset: -1px;
+
+    &::after {
+      content: "";
+      position: absolute;
+      left: 0;
+      top: 0;
+      height: 100%;
+      width: 100%;
+      background: linear-gradient(to top left, transparent, transparent 48%, white 49%, white 51%, transparent 52%, transparent);
+    }
+  }
+
+  td {
+    position: relative;
+    height: 2em;
+  }
+}
+
+.job-table {
+  td, th {
+    width: 25%;
+    max-width: 25%;
+    min-width: 25%;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    padding: 0.1rem 0.2rem;
+  }
+
+  @media (max-width: 767.98px) {
+    .expected, .timestamp, .clean, .job-received {
+      display: none;
+    }
+  }
+}
+
+.title-link, .title-link:hover, .title-link:focus, .title-link:active {
+  display: block;
+  text-decoration: none;
+  color: inherit;
 }

frontend/src/app/components/pool/pool.component.ts

@@ -10,6 +10,9 @@ import { selectPowerOfTen } from '@app/bitcoin.utils';
 import { formatNumber } from '@angular/common';
 import { SeoService } from '@app/services/seo.service';
 import { HttpErrorResponse } from '@angular/common/http';
+import { StratumJob } from '../../interfaces/websocket.interface';
+import { WebsocketService } from '../../services/websocket.service';
+import { MiningService } from '../../services/mining.service';
 
 interface AccelerationTotal {
   cost: number,
@@ -27,12 +30,16 @@ export class PoolComponent implements OnInit {
   @Input() left: number | string = 75;
 
   gfg = true;
+  stratumEnabled = this.stateService.env.STRATUM_ENABLED;
 
   formatNumber = formatNumber;
+  Math = Math;
   slugSubscription: Subscription;
   poolStats$: Observable<PoolStat>;
   blocks$: Observable<BlockExtended[]>;
   oobFees$: Observable<AccelerationTotal[]>;
+  job$: Observable<StratumJob | null>;
+  expectedBlockTime$: Observable<number>;
   isLoading = true;
   error: HttpErrorResponse | null = null;
 
@@ -53,6 +60,8 @@ export class PoolComponent implements OnInit {
     private apiService: ApiService,
     private route: ActivatedRoute,
     public stateService: StateService,
+    private websocketService: WebsocketService,
+    private miningService: MiningService,
     private seoService: SeoService,
   ) {
     this.auditAvailable = this.stateService.env.AUDIT;
@@ -62,7 +71,7 @@ export class PoolComponent implements OnInit {
     this.slugSubscription = this.route.params.pipe(map((params) => params.slug)).subscribe((slug) => {
       this.isLoading = true;
       this.blocks = [];
-      this.chartOptions = {};  
+      this.chartOptions = {};
       this.slug = slug;
       this.initializeObservables();
     });
@@ -129,6 +138,31 @@ export class PoolComponent implements OnInit {
       }),
       filter(oob => oob.length === 3 && oob[2].count > 0)
     );
+
+    if (this.stratumEnabled) {
+      this.job$ = combineLatest([
+        this.poolStats$.pipe(
+          tap((poolStats) => {
+            this.websocketService.startTrackStratum(poolStats.pool.unique_id);
+          })
+        ),
+        this.stateService.stratumJobs$
+      ]).pipe(
+        map(([poolStats, jobs]) => {
+          return jobs[poolStats.pool.unique_id];
+        })
+      );
+
+      this.expectedBlockTime$ = combineLatest([
+        this.miningService.getMiningStats('1w'),
+        this.poolStats$,
+        this.stateService.difficultyAdjustment$
+      ]).pipe(
+        map(([miningStats, poolStat, da]) => {
+          return (da.timeAvg / ((poolStat.estimatedHashrate || 0) / (miningStats.lastEstimatedHashrate * 1_000_000_000_000_000_000))) + Date.now() + da.timeOffset;
+        })
+      );
+    }
   }
 
   prepareChartOptions(hashrate, share) {

frontend/src/app/components/stratum/stratum-list/stratum-list.component.html

@@ -0,0 +1,49 @@
+<div class="container-xl" style="min-height: 335px">
+  <h1 class="float-left" i18n="master-page.blocks">Stratum Jobs</h1>
+
+  <div class="clearfix"></div>
+
+  <div style="min-height: 295px">
+    <table *ngIf="poolsReady && (rows$ | async) as rows;" class="stratum-table">
+      <thead>
+        <tr>
+          <td class="height">Height</td>
+          <td class="reward">Reward</td>
+          <td class="tag">Coinbase Tag</td>
+          <td class="merkle" [attr.colspan]="rows[0]?.merkleCells?.length || 4">
+            Merkle Branches
+          </td>
+          <td class="pool">Pool</td>
+        </tr>
+      </thead>
+      <tbody>
+        @for (row of rows; track row.job.pool) {
+          <tr>
+            <td class="height">
+              {{ row.job.height }}
+            </td>
+            <td class="reward">
+              <app-amount [satoshis]="row.job.reward"></app-amount>
+            </td>
+            <td class="tag">
+              {{ row.job.tag }}
+            </td>
+            @for (cell of row.merkleCells; track $index) {
+              <td class="merkle" [style.background-color]="cell.hash ? '#' + cell.hash.slice(0, 6) : ''">
+                <div class="pipe-segment" [class]="pipeToClass(cell.type)"></div>
+              </td>
+            }
+            <td class="pool">
+              @if (pools[row.job.pool]) {
+                <a class="badge" [routerLink]="[('/mining/pool/' + pools[row.job.pool].slug) | relativeUrl]">
+                  <img class="pool-logo" [src]="'/resources/mining-pools/' + pools[row.job.pool].slug + '.svg'" onError="this.src = '/resources/mining-pools/default.svg'" [alt]="'Logo of ' + pools[row.job.pool].name + ' mining pool'"> 
+                  {{ pools[row.job.pool].name}}
+                </a>
+              }
+            </td>
+          </tr>
+        }
+      </tbody>
+    </table>
+  </div>
+</div>

frontend/src/app/components/stratum/stratum-list/stratum-list.component.scss

@@ -0,0 +1,108 @@
+.stratum-table {
+  width: 100%;
+}
+
+td {
+  position: relative;
+  height: 2em;
+
+  &.height, &.reward, &.tag {
+    padding: 0 5px;
+  }
+
+  &.tag {
+    max-width: 180px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  
+  &.pool {
+    padding-left: 5px;
+    padding-right: 20px;
+  }
+
+  &.merkle {
+    width: 100px;
+    .pipe-segment {
+      position: absolute;
+      border-color: white;
+      box-sizing: content-box;
+
+      &.vertical {
+        top: 0;
+        right: 0;
+        width: 50%;
+        height: 100%;
+        border-left: solid 4px;
+      }
+      &.horizontal {
+        bottom: 0;
+        left: 0;
+        width: 100%;
+        height: 50%;
+        border-top: solid 4px;
+      }
+      &.branch-top {
+        bottom: 0;
+        right: 0;
+        width: 100%;
+        height: 50%;
+        border-top: solid 4px;
+        &::after {
+          content: "";
+          position: absolute;
+          box-sizing: content-box;
+          top: -4px;
+          right: 0px;
+          bottom: 0;
+          width: 50%;
+          border-top: solid 4px;
+          border-left: solid 4px;
+          border-top-left-radius: 5px;
+        }
+      }
+      &.branch-mid {
+        bottom: 0;
+        right: 0px;
+        width: 50%;
+        height: 100%;
+        border-left: solid 4px;
+        &::after {
+          content: "";
+          position: absolute;
+          box-sizing: content-box;
+          top: -4px;
+          left: -4px;
+          width: 100%;
+          height: 50%;
+          border-bottom: solid 4px;
+          border-left: solid 4px;
+          border-bottom-left-radius: 5px;
+        }
+      }
+      &.branch-end {
+        top: -4px;
+        right: 0;
+        width: 50%;
+        height: 50%;
+        border-bottom-left-radius: 5px;
+        border-bottom: solid 4px;
+        border-left: solid 4px;
+      }
+    }
+  }
+}
+
+.badge {
+  position: relative;
+  color: #FFF;
+}
+
+.pool-logo {
+  width: 15px;
+  height: 15px;
+  position: relative;
+  top: -1px;
+  margin-right: 2px;
+}

frontend/src/app/components/stratum/stratum-list/stratum-list.component.ts

@@ -0,0 +1,224 @@
+import { Component, OnInit, ChangeDetectionStrategy, OnDestroy, ChangeDetectorRef } from '@angular/core';
+import { StateService } from '../../../services/state.service';
+import { WebsocketService } from '../../../services/websocket.service';
+import { map, Observable } from 'rxjs';
+import { StratumJob } from '../../../interfaces/websocket.interface';
+import { MiningService } from '../../../services/mining.service';
+import { SinglePoolStats } from '../../../interfaces/node-api.interface';
+
+type MerkleCellType = ' ' | '┬' | '├' | '└' | '│' | '─' | 'leaf';
+
+
+interface TaggedStratumJob extends StratumJob {
+  tag: string;
+  merkleBranchIds: string[];
+}
+
+interface MerkleCell {
+  hash: string;
+  type: MerkleCellType;
+  job?: TaggedStratumJob;
+}
+
+interface MerkleTree {
+  hash?: string;
+  job: string;
+  size: number;
+  children?: MerkleTree[];
+}
+
+interface PoolRow {
+  job: TaggedStratumJob;
+  merkleCells: MerkleCell[];
+}
+
+function parseTag(scriptSig: string): string {
+  const hex = scriptSig.slice(8).replace(/6d6d.{64}/, '');
+  const bytes: number[] = [];
+  for (let i = 0; i < hex.length; i += 2) {
+    bytes.push(parseInt(hex.substr(i, 2), 16));
+  }
+  // eslint-disable-next-line no-control-regex
+  const ascii = new TextDecoder('utf8').decode(Uint8Array.from(bytes)).replace(/\uFFFD/g, '').replace(/\\0/g, '').replace(/[\x00-\x1F\x7F-\x9F]/g, '');
+  if (ascii.includes('/ViaBTC/')) {
+    return '/ViaBTC/';
+  } else if (ascii.includes('SpiderPool/')) {
+    return 'SpiderPool/';
+  }
+  return (ascii.match(/\/.*\//)?.[0] || ascii).trim();
+}
+
+function getMerkleBranchIds(merkleBranches: string[], numBranches: number): string[] {
+  let lastHash = '';
+  const ids: string[] = [];
+  for (let i = 0; i < numBranches; i++) {
+    if (merkleBranches[i]) {
+      lastHash = merkleBranches[i];
+    }
+    ids.push(`${i}-${lastHash}`);
+  }
+  return ids;
+}
+
+@Component({
+  selector: 'app-stratum-list',
+  templateUrl: './stratum-list.component.html',
+  styleUrls: ['./stratum-list.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class StratumList implements OnInit, OnDestroy {
+  rows$: Observable<PoolRow[]>;
+  pools: { [id: number]: SinglePoolStats } = {};
+  poolsReady: boolean = false;
+
+  constructor(
+    private stateService: StateService,
+    private websocketService: WebsocketService,
+    private miningService: MiningService,
+    private cd: ChangeDetectorRef,
+  ) {}
+
+  ngOnInit(): void {
+    this.websocketService.want(['stats', 'blocks', 'mempool-blocks']);
+    this.miningService.getPools().subscribe(pools => {
+      this.pools = {};
+      for (const pool of pools) {
+        this.pools[pool.unique_id] = pool;
+      }
+      this.poolsReady = true;
+      this.cd.markForCheck();
+    });
+    this.rows$ = this.stateService.stratumJobs$.pipe(
+      map((jobs) => this.processJobs(jobs)),
+    );
+    this.websocketService.startTrackStratum('all');
+  }
+
+  processJobs(rawJobs: Record<string, StratumJob>): PoolRow[] {
+    const numBranches = Math.max(...Object.values(rawJobs).map(job => job.merkleBranches.length));
+    const jobs: Record<string, TaggedStratumJob> = {};
+    for (const [id, job] of Object.entries(rawJobs)) {
+      jobs[id] = { ...job, tag: parseTag(job.scriptsig), merkleBranchIds: getMerkleBranchIds(job.merkleBranches, numBranches) };
+    }
+    if (Object.keys(jobs).length === 0) {
+      return [];
+    }
+
+    let trees: MerkleTree[] = Object.keys(jobs).map(job => ({
+      job,
+      size: 1,
+    }));
+
+    // build tree from bottom up
+    for (let col = numBranches - 1; col >= 0; col--) {
+      const groups: Record<string, MerkleTree[]> = {};
+      for (const tree of trees) {
+        const branchId = jobs[tree.job].merkleBranchIds[col];
+        if (!groups[branchId]) {
+          groups[branchId] = [];
+        }
+        groups[branchId].push(tree);
+      }
+
+      trees = Object.values(groups).map(group => ({
+        hash: jobs[group[0].job].merkleBranches[col],
+        job: group[0].job,
+        children: group,
+        size: group.reduce((acc, tree) => acc + tree.size, 0),
+      }));
+    }
+
+    // initialize grid of cells
+    const rows: (MerkleCell | null)[][] = [];
+    for (let i = 0; i < Object.keys(jobs).length; i++) {
+      const row: (MerkleCell | null)[] = [];
+      for (let j = 0; j <= numBranches; j++) {
+        row.push(null);
+      }
+      rows.push(row);
+    }
+
+    // fill in the cells
+    let colTrees = [trees.sort((a, b) => {
+      if (a.size !== b.size) {
+        return b.size - a.size;
+      }
+      return a.job.localeCompare(b.job);
+    })];
+    for (let col = 0; col <= numBranches; col++) {
+      let row = 0;
+      const nextTrees: MerkleTree[][] = [];
+      for (let g = 0; g < colTrees.length; g++) {
+        for (let t = 0; t < colTrees[g].length; t++) {
+          const tree = colTrees[g][t];
+          const isFirstTree = (t === 0);
+          const isLastTree = (t === colTrees[g].length - 1);
+          for (let i = 0; i < tree.size; i++) {
+            const isFirstCell = (i === 0);
+            const isLeaf = (col === numBranches);
+            rows[row][col] = {
+              hash: tree.hash,
+              job: isLeaf ? jobs[tree.job] : undefined,
+              type: 'leaf',
+            };
+            if (col > 0) {
+              rows[row][col - 1].type = getCellType(isFirstCell, isFirstTree, isLastTree);
+            }
+            row++;
+          }
+          if (tree.children) {
+            nextTrees.push(tree.children.sort((a, b) => {
+              if (a.size !== b.size) {
+                return b.size - a.size;
+              }
+              return a.job.localeCompare(b.job);
+            }));
+          }
+        }
+      }
+      colTrees = nextTrees;
+    }
+    return rows.map(row => ({
+      job: row[row.length - 1].job,
+      merkleCells: row.slice(0, -1),
+    }));
+  }
+
+  pipeToClass(type: MerkleCellType): string {
+    return {
+      ' ': 'empty',
+      '┬': 'branch-top',
+      '├': 'branch-mid',
+      '└': 'branch-end',
+      '│': 'vertical',
+      '─': 'horizontal',
+      'leaf': 'leaf'
+    }[type];
+  }
+
+  ngOnDestroy(): void {
+    this.websocketService.stopTrackStratum();
+  }
+}
+
+function getCellType(isFirstCell, isFirstTree, isLastTree): MerkleCellType {
+  if (isFirstCell) {
+    if (isFirstTree) {
+      if (isLastTree) {
+        return '─';
+      } else {
+        return '┬';
+      }
+    } else if (isLastTree) {
+      return '└';
+    } else {
+      return '├';
+    }
+  } else {
+    if (isLastTree) {
+      return ' ';
+    } else {
+      return '│';
+    }
+  }
+}

frontend/src/app/components/transaction/transaction.component.html

@@ -24,6 +24,7 @@
           [height]="tx?.status?.block_height"
           [replaced]="replaced"
           [removed]="this.rbfInfo?.mined && !this.tx?.status?.confirmed"
+          [cached]="isCached"
         ></app-confirmations>
       </div>
     </ng-container>

frontend/src/app/components/transaction/transaction.component.ts

@@ -240,7 +240,7 @@ export class TransactionComponent implements OnInit, AfterViewInit, OnDestroy {
         retry({ count: 2, delay: 2000 }),
         // Try again until we either get a valid response, or the transaction is confirmed
         repeat({ delay: 2000 }),
-        filter((transactionTimes) => transactionTimes?.length && transactionTimes[0] > 0 && !this.tx.status?.confirmed),
+        filter((transactionTimes) => transactionTimes?.[0] > 0 || this.tx.status?.confirmed),
         take(1),
       )),
     )

frontend/src/app/components/transactions-list/transactions-list.component.ts

@@ -202,12 +202,12 @@ export class TransactionsListComponent implements OnInit, OnChanges {
             for (const address of this.addresses) {
               switch (address.length) {
                 case 130: {
-                  if (v.scriptpubkey === '21' + address + 'ac') {
+                  if (v.scriptpubkey === '41' + address + 'ac') {
                     return v.value;
                   }
                 } break;
                 case 66: {
-                  if (v.scriptpubkey === '41' + address + 'ac') {
+                  if (v.scriptpubkey === '21' + address + 'ac') {
                     return v.value;
                   }
                 } break;
@@ -224,12 +224,12 @@ export class TransactionsListComponent implements OnInit, OnChanges {
             for (const address of this.addresses) {
               switch (address.length) {
                 case 130: {
-                  if (v.prevout?.scriptpubkey === '21' + address + 'ac') {
+                  if (v.prevout?.scriptpubkey === '41' + address + 'ac') {
                     return v.prevout?.value;
                   }
                 } break;
                 case 66: {
-                  if (v.prevout?.scriptpubkey === '41' + address + 'ac') {
+                  if (v.prevout?.scriptpubkey === '21' + address + 'ac') {
                     return v.prevout?.value;
                   }
                 } break;

frontend/src/app/components/wallet/wallet.component.html

@@ -1,6 +1,6 @@
 <div class="container-xl" [class.liquid-address]="network === 'liquid' || network === 'liquidtestnet'">
   <div class="title-address">
-    <h1 i18n="shared.wallet">Wallet</h1>
+    <h1>{{ walletName }}</h1>
   </div>
 
   <div class="clearfix"></div>
@@ -74,6 +74,36 @@
     </ng-container>
   </ng-container>
 
+  <br>
+
+  <div class="title-tx">
+    <h2 class="text-left" i18n="address.transactions">Transactions</h2>
+  </div>
+
+  <app-transactions-list [transactions]="transactions" [showConfirmations]="true" [addresses]="addressStrings" (loadMore)="loadMore()"></app-transactions-list>
+
+  <div class="text-center">
+    <ng-template [ngIf]="isLoadingTransactions">
+      <div class="header-bg box">
+        <div class="row" style="height: 107px;">
+          <div class="col-sm">
+            <span class="skeleton-loader"></span>
+          </div>
+          <div class="col-sm">
+            <span class="skeleton-loader"></span>
+          </div>
+        </div>
+      </div>
+
+    </ng-template>
+
+    <ng-template [ngIf]="retryLoadMore">
+      <br>
+      <button type="button" class="btn btn-outline-info btn-sm" (click)="loadMore()"><fa-icon [icon]="['fas', 'redo-alt']" [fixedWidth]="true"></fa-icon></button>
+    </ng-template>
+  </div>
+
+
   <ng-template #loadingTemplate>
 
     <div class="box" *ngIf="!error; else errorTemplate">

frontend/src/app/components/wallet/wallet.component.ts

@@ -9,6 +9,8 @@ import { of, Observable, Subscription } from 'rxjs';
 import { SeoService } from '@app/services/seo.service';
 import { seoDescriptionNetwork } from '@app/shared/common.utils';
 import { WalletAddress } from '@interfaces/node-api.interface';
+import { ElectrsApiService } from '@app/services/electrs-api.service';
+import { AudioService } from '@app/services/audio.service';
 
 class WalletStats implements ChainStats {
   addresses: string[];
@@ -24,6 +26,7 @@ class WalletStats implements ChainStats {
         acc.funded_txo_sum += stat.funded_txo_sum;
         acc.spent_txo_count += stat.spent_txo_count;
         acc.spent_txo_sum += stat.spent_txo_sum;
+        acc.tx_count += stat.tx_count;
         return acc;
       }, {
         funded_txo_count: 0,
@@ -109,12 +112,17 @@ export class WalletComponent implements OnInit, OnDestroy {
   addressStrings: string[] = [];
   walletName: string;
   isLoadingWallet = true;
+  isLoadingTransactions = true;
+  transactions: Transaction[];
+  totalTransactionCount: number;
+  retryLoadMore = false;
   wallet$: Observable<Record<string, WalletAddress>>;
   walletAddresses$: Observable<Record<string, Address>>;
   walletSummary$: Observable<AddressTxSummary[]>;
   walletStats$: Observable<WalletStats>;
   error: any;
   walletSubscription: Subscription;
+  transactionSubscription: Subscription;
 
   collapseAddresses: boolean = true;
 
@@ -129,6 +137,8 @@ export class WalletComponent implements OnInit, OnDestroy {
     private websocketService: WebsocketService,
     private stateService: StateService,
     private apiService: ApiService,
+    private electrsApiService: ElectrsApiService,
+    private audioService: AudioService,
     private seoService: SeoService,
   ) { }
 
@@ -172,6 +182,21 @@ export class WalletComponent implements OnInit, OnDestroy {
       }),
       switchMap(initial => this.stateService.walletTransactions$.pipe(
         startWith(null),
+        tap((transactions) => {
+          if (!transactions?.length) {
+            return;
+          }
+          for (const transaction of transactions) {
+            const tx = this.transactions.find((t) => t.txid === transaction.txid);
+            if (tx) {
+              tx.status = transaction.status;
+            } else {
+              this.transactions.unshift(transaction);
+            }
+          }
+          this.transactions = this.transactions.slice();
+          this.audioService.playSound('magic');
+        }),
         scan((wallet, walletTransactions) => {
           for (const tx of (walletTransactions || [])) {
             const funded: Record<string, number> = {};
@@ -267,8 +292,57 @@ export class WalletComponent implements OnInit, OnDestroy {
             return stats;
           }, walletStats),
         );
-      }),
+      })
     );
+
+    this.transactionSubscription = this.wallet$.pipe(
+      switchMap(wallet => {
+        const addresses = Object.keys(wallet).map(addr => this.normalizeAddress(addr));
+        return this.electrsApiService.getAddressesTransactions$(addresses);
+      }),
+      map(transactions => {
+        // only confirmed transactions supported for now
+        return transactions.filter(tx => tx.status.confirmed).sort((a, b) => b.status.block_height - a.status.block_height);
+      }),
+      catchError((error) => {
+        console.log(error);
+        this.error = error;
+        this.seoService.logSoft404();
+        this.isLoadingWallet = false;
+        return of([]);
+      })
+    ).subscribe((transactions: Transaction[] | null) => {
+      if (!transactions) {
+        return;
+      }
+      this.transactions = transactions;
+      this.isLoadingTransactions = false;
+    });
+  }
+
+  loadMore(): void {
+    if (this.isLoadingTransactions || this.fullyLoaded) {
+      return;
+    }
+    this.isLoadingTransactions = true;
+    this.retryLoadMore = false;
+    this.electrsApiService.getAddressesTransactions$(this.addressStrings, this.transactions[this.transactions.length - 1].txid)
+      .subscribe((transactions: Transaction[]) => {
+        if (transactions && transactions.length) {
+          this.transactions = this.transactions.concat(transactions.sort((a, b) => b.status.block_height - a.status.block_height));
+        } else {
+          this.fullyLoaded = true;
+        }
+        this.isLoadingTransactions = false;
+      },
+      (error) => {
+        this.isLoadingTransactions = false;
+        this.retryLoadMore = true;
+        // In the unlikely event of the txid wasn't found in the mempool anymore and we must reload the page.
+        if (error.status === 422) {
+          window.location.reload();
+        }
+      });
   }
 
   deduplicateWalletTransactions(walletTransactions: AddressTxSummary[]): AddressTxSummary[] {
@@ -299,5 +373,6 @@ export class WalletComponent implements OnInit, OnDestroy {
   ngOnDestroy(): void {
     this.websocketService.stopTrackingWallet();
     this.walletSubscription.unsubscribe();
+    this.transactionSubscription.unsubscribe();
   }
 }

frontend/src/app/docs/api-docs/api-docs-nav.component.ts

@@ -1,6 +1,6 @@
 import { Component, OnInit, Input, Output, EventEmitter } from '@angular/core';
 import { Env, StateService } from '@app/services/state.service';
-import { restApiDocsData } from '@app/docs/api-docs/api-docs-data';
+import { restApiDocsData, wsApiDocsData } from '@app/docs/api-docs/api-docs-data';
 import { faqData } from '@app/docs/api-docs/api-docs-data';
 
 @Component({
@@ -28,6 +28,8 @@ export class ApiDocsNavComponent implements OnInit {
     this.auditEnabled = this.env.AUDIT;
     if (this.whichTab === 'rest') {
       this.tabData = restApiDocsData;
+    } else if (this.whichTab === 'websocket') {
+      this.tabData = wsApiDocsData;
     } else if (this.whichTab === 'faq') {
       this.tabData = faqData;
     }

frontend/src/app/docs/api-docs/api-docs.component.html

@@ -108,18 +108,43 @@
       </div>
     </div>
 
-    <div id="websocketAPI" *ngIf="( whichTab === 'websocket' )">
-      <div class="api-category">
-        <div class="websocket">
-          <div class="endpoint">
-            <div class="subtitle" i18n="Api docs endpoint">Endpoint</div>
-            {{ wrapUrl(network.val, wsDocs, true) }}
+    <div id="websocketAPI" *ngIf="whichTab === 'websocket'">
+
+      <div id="doc-nav-desktop" class="hide-on-mobile" [ngClass]="desktopDocsNavPosition">
+        <app-api-docs-nav (navLinkClickEvent)="anchorLinkClick( $event )" [network]="{ val: network$ | async }" [whichTab]="whichTab"></app-api-docs-nav>
+      </div>
+
+      <div class="doc-content">
+
+        <div id="enterprise-cta-mobile" *ngIf="officialMempoolInstance && showMobileEnterpriseUpsell">
+          <p>Get higher API limits with <span class="no-line-break">Mempool Enterprise®</span></p>
+          <div class="button-group">
+            <a class="btn btn-small btn-secondary" (click)="showMobileEnterpriseUpsell = false">No Thanks</a>
+            <a class="btn btn-small btn-purple" href="https://mempool.space/enterprise">More Info <fa-icon [icon]="['fas', 'angle-right']" [styles]="{'font-size': '12px'}"></fa-icon></a>
           </div>
-          <div class="description">
-            <div class="subtitle" i18n>Description</div>
-            <div i18n="api-docs.websocket.websocket">Default push: <code>{{ '{' }} action: 'want', data: ['blocks', ...] {{ '}' }}</code> to express what you want pushed. Available: <code>blocks</code>, <code>mempool-blocks</code>, <code>live-2h-chart</code>, and <code>stats</code>.<br><br>Push transactions related to address: <code>{{ '{' }} 'track-address': '3PbJ...bF9B' {{ '}' }}</code> to receive all new transactions containing that address as input or output. Returns an array of transactions. <code>address-transactions</code> for new mempool transactions, and <code>block-transactions</code> for new block confirmed transactions.</div>
+        </div>
+
+        <p class="doc-welcome-note">Below is a reference for the {{ network.val === '' ? 'Bitcoin' : network.val.charAt(0).toUpperCase() + network.val.slice(1) }} <ng-container i18n="api-docs.title-websocket">Websocket service</ng-container> running at {{ websocketUrl(network.val) }}.</p>
+        <p class="doc-welcome-note api-note" *ngIf="officialMempoolInstance">Note that usage limits apply to our WebSocket API. Consider an <a href="https://mempool.space/enterprise">enterprise sponsorship</a> if you need higher API limits, such as higher tracking limits.</p>
+
+        <div class="doc-item-container" *ngFor="let item of wsDocs">
+          <div *ngIf="!item.hasOwnProperty('options') || ( item.hasOwnProperty('options') && item.options.hasOwnProperty('officialOnly') && item.options.officialOnly && officialMempoolInstance )">
+            <h3 *ngIf="( item.type === 'category' ) && ( item.showConditions.indexOf(network.val) > -1 )">{{ item.title }}</h3>
+            <div *ngIf="( item.type !== 'category' ) && ( item.showConditions.indexOf(network.val) > -1 )" class="endpoint-container" id="{{ item.fragment }}">
+              <a id="{{ item.fragment + '-tab-header' }}" class="section-header" (click)="anchorLinkClick({event: $event, fragment: item.fragment})">{{ item.title }} <span>{{ item.category }}</span></a>
+              <div class="endpoint-content">
+                <div class="description">
+                  <div class="subtitle" i18n>Description</div>
+                  <div [innerHTML]="item.description.default" i18n></div>
+                </div>
+                <div class="description">
+                  <div class="subtitle" i18n>Payload</div>
+                  <pre><code [innerText]="item.payload"></code></pre>
+                </div>
+                <app-code-template [hostname]="hostname" [baseNetworkUrl]="baseNetworkUrl" [method]="item.httpRequestMethod" [code]="item.codeExample.default" [network]="network.val" [showCodeExample]="item.showJsExamples"></app-code-template>
+              </div>
+            </div>
           </div>
-          <app-code-template [method]="'websocket'" [hostname]="hostname" [code]="wsDocs" [network]="network.val" [showCodeExample]="wsDocs.showJsExamples"></app-code-template>
         </div>
       </div>
     </div>

frontend/src/app/docs/api-docs/api-docs.component.scss

@@ -470,3 +470,21 @@ dd {
     margin-left: 1em;
   }
 }
+
+code {
+  background-color: var(--bg);
+  font-family: Consolas,Monaco,Lucida Console,Liberation Mono,DejaVu Sans Mono,Bitstream Vera Sans Mono,Courier New;
+}
+
+pre {
+  display: block;
+  font-size: 87.5%;
+  color: #f18920;
+  background-color: var(--bg);
+  padding: 30px;
+  code{
+    background-color: transparent;
+    white-space: break-spaces;
+    word-break: break-all;
+  }
+}

frontend/src/app/docs/api-docs/api-docs.component.ts

@@ -145,7 +145,7 @@ export class ApiDocsComponent implements OnInit, AfterViewInit {
     if (document.getElementById( targetId + "-tab-header" )) {
       tabHeaderHeight = document.getElementById( targetId + "-tab-header" ).scrollHeight;
     }
-    if( ( window.innerWidth <= 992 ) && ( ( this.whichTab === 'rest' ) || ( this.whichTab === 'faq' ) ) && targetId ) {
+    if( ( window.innerWidth <= 992 ) && ( ( this.whichTab === 'rest' ) || ( this.whichTab === 'faq' ) || ( this.whichTab === 'websocket' ) ) && targetId ) {
       const endpointContainerEl = document.querySelector<HTMLElement>( "#" + targetId );
       const endpointContentEl = document.querySelector<HTMLElement>( "#" + targetId + " .endpoint-content" );
       const endPointContentElHeight = endpointContentEl.clientHeight;
@@ -207,13 +207,29 @@ export class ApiDocsComponent implements OnInit, AfterViewInit {
       text = text.replace('%{' + indexNumber + '}', curlText);
     }
 
-    if (websocket) {
-      const wsHostname = this.hostname.replace('https://', 'wss://');
-      wsHostname.replace('http://', 'ws://');
-      return `${wsHostname}${curlNetwork}${text}`;
-    }
     return `${this.hostname}${curlNetwork}${text}`;
   }
 
+  websocketUrl(network: string) {
+    let curlNetwork = '';
+    if (this.env.BASE_MODULE === 'mempool') {
+      if (!['', 'mainnet'].includes(network)) {
+        curlNetwork = `/${network}`;
+      }
+    } else if (this.env.BASE_MODULE === 'liquid') {
+      if (!['', 'liquid'].includes(network)) {
+        curlNetwork = `/${network}`;
+      }
+    }
+
+    if (network === this.env.ROOT_NETWORK) {
+      curlNetwork = '';
+    }
+
+    let wsHostname = this.hostname.replace('https://', 'wss://');
+    wsHostname = wsHostname.replace('http://', 'ws://');
+    return `${wsHostname}${curlNetwork}/api/v1/ws`;
+  }
+
 }
 

frontend/src/app/interfaces/node-api.interface.ts

@@ -1,4 +1,4 @@
-import { AddressTxSummary, Block, ChainStats, Transaction } from "./electrs.interface";
+import { AddressTxSummary, Block, ChainStats } from "./electrs.interface";
 
 export interface OptimizedMempoolStats {
   added: number;

frontend/src/app/interfaces/websocket.interface.ts

@@ -21,6 +21,8 @@ export interface WebsocketResponse {
   rbfInfo?: RbfTree;
   rbfLatest?: RbfTree[];
   rbfLatestSummary?: ReplacementInfo[];
+  stratumJob?: StratumJob;
+  stratumJobs?: Record<number, StratumJob>;
   utxoSpent?: object;
   transactions?: TransactionStripped[];
   loadingIndicators?: ILoadingIndicators;
@@ -37,6 +39,7 @@ export interface WebsocketResponse {
   'track-rbf-summary'?: boolean;
   'track-accelerations'?: boolean;
   'track-wallet'?: string;
+  'track-stratum'?: string | number;
   'watch-mempool'?: boolean;
   'refresh-blocks'?: boolean;
 }
@@ -150,3 +153,24 @@ export interface HealthCheckHost {
     electrs?: string;
   }
 }
+
+export interface StratumJob {
+  pool: number;
+  height: number;
+  coinbase: string;
+  scriptsig: string;
+  reward: number;
+  jobId: string;
+  extraNonce: string;
+  extraNonce2Size: number;
+  prevHash: string;
+  coinbase1: string;
+  coinbase2: string;
+  merkleBranches: string[];
+  version: string;
+  bits: string;
+  time: string;
+  timestamp: number;
+  cleanJobs: boolean;
+  received: number;
+}

frontend/src/app/master-page.module.ts

@@ -10,9 +10,10 @@ import { TestTransactionsComponent } from '@components/test-transactions/test-tr
 import { CalculatorComponent } from '@components/calculator/calculator.component';
 import { BlocksList } from '@components/blocks-list/blocks-list.component';
 import { RbfList } from '@components/rbf-list/rbf-list.component';
+import { StratumList } from '@components/stratum/stratum-list/stratum-list.component';
 import { ServerHealthComponent } from '@components/server-health/server-health.component';
 import { ServerStatusComponent } from '@components/server-health/server-status.component';
-import { FaucetComponent } from '@components/faucet/faucet.component'
+import { FaucetComponent } from '@components/faucet/faucet.component';
 
 const browserWindow = window || {};
 // @ts-ignore
@@ -56,6 +57,16 @@ const routes: Routes = [
         path: 'rbf',
         component: RbfList,
       },
+      ...(browserWindowEnv.STRATUM_ENABLED ? [{
+        path: 'stratum',
+        component: StartComponent,
+        children: [
+          {
+            path: '',
+            component: StratumList,
+          }
+        ]
+      }] : []),
       {
         path: 'terms-of-service',
         loadChildren: () => import('@components/terms-of-service/terms-of-service.module').then(m => m.TermsOfServiceModule),

frontend/src/app/services/electrs-api.service.ts

@@ -142,12 +142,16 @@ export class ElectrsApiService {
     return this.httpClient.get<Transaction[]>(this.apiBaseUrl + this.apiBasePath + '/api/address/' + address + '/txs', { params });
   }
 
-  getAddressesTransactions$(addresses: string[],  txid?: string): Observable<Transaction[]> {
+  getAddressesTransactions$(addresses: string[], txid?: string): Observable<Transaction[]> {
     let params = new HttpParams();
     if (txid) {
       params = params.append('after_txid', txid);
     }
-    return this.httpClient.get<Transaction[]>(this.apiBaseUrl + this.apiBasePath + `/api/addresses/txs?addresses=${addresses.join(',')}`, { params });
+    return this.httpClient.post<Transaction[]>(
+      this.apiBaseUrl + this.apiBasePath + '/api/addresses/txs',
+      addresses,
+      { params }
+    );
   }
 
   getAddressSummary$(address: string,  txid?: string): Observable<AddressTxSummary[]> {
@@ -163,7 +167,7 @@ export class ElectrsApiService {
     if (txid) {
       params = params.append('after_txid', txid);
     }
-    return this.httpClient.get<AddressTxSummary[]>(this.apiBaseUrl + this.apiBasePath + `/api/addresses/txs/summary?addresses=${addresses.join(',')}`, { params });
+    return this.httpClient.post<AddressTxSummary[]>(this.apiBaseUrl + this.apiBasePath + '/api/addresses/txs/summary', addresses, { params });
   }
 
   getScriptHashTransactions$(script: string,  txid?: string): Observable<Transaction[]> {
@@ -182,7 +186,7 @@ export class ElectrsApiService {
       params = params.append('after_txid', txid);
     }
     return from(Promise.all(scripts.map(script => calcScriptHash$(script)))).pipe(
-      switchMap(scriptHashes => this.httpClient.get<Transaction[]>(this.apiBaseUrl + this.apiBasePath + `/api/scripthashes/txs?scripthashes=${scriptHashes.join(',')}`, { params })),
+      switchMap(scriptHashes => this.httpClient.post<Transaction[]>(this.apiBaseUrl + this.apiBasePath + '/api/scripthashes/txs', scriptHashes, { params })),
     );
   }
 
@@ -212,7 +216,7 @@ export class ElectrsApiService {
       params = params.append('after_txid', txid);
     }
     return from(Promise.all(scripts.map(script => calcScriptHash$(script)))).pipe(
-      switchMap(scriptHashes => this.httpClient.get<AddressTxSummary[]>(this.apiBaseUrl + this.apiBasePath + `/api/scripthashes/txs/summary?scripthashes=${scriptHashes.join(',')}`, { params })),
+      switchMap(scriptHashes => this.httpClient.post<AddressTxSummary[]>(this.apiBaseUrl + this.apiBasePath + '/api/scripthashes/txs/summary', scriptHashes, { params })),
     );
   }
 

frontend/src/app/services/mining.service.ts

@@ -64,8 +64,8 @@ export class MiningService {
       );
     }
   }
-  
-  /** 
+
+  /**
    * Get names and slugs of all pools
    */
   public getPools(): Observable<any[]> {
@@ -75,7 +75,6 @@ export class MiningService {
         return this.poolsData;
       })
     );
-    
   }
   /**
    * Set the hashrate power of ten we want to display

frontend/src/app/services/services-api.service.ts

@@ -18,7 +18,6 @@ export interface IUser {
   subscription_tag: string;
   status: 'pending' | 'verified' | 'disabled';
   features: string | null;
-  fullName: string | null;
   countryCode: string | null;
   imageMd5: string;
   ogRank: number | null;
@@ -143,8 +142,8 @@ export class ServicesApiServices {
     return this.httpClient.post<any>(`${this.stateService.env.SERVICES_API}/accelerator/accelerate/applePay`, { txInput: txInput, cardTag: cardTag, token: token, referenceId: referenceId, userApprovedUSD: userApprovedUSD });
   }
 
-  accelerateWithGooglePay$(txInput: string, token: string, verificationToken: string, cardTag: string, referenceId: string, userApprovedUSD: number) {
-    return this.httpClient.post<any>(`${this.stateService.env.SERVICES_API}/accelerator/accelerate/googlePay`, { txInput: txInput, cardTag: cardTag, token: token, verificationToken: verificationToken, referenceId: referenceId, userApprovedUSD: userApprovedUSD });
+  accelerateWithGooglePay$(txInput: string, token: string, verificationToken: string, cardTag: string, referenceId: string, userApprovedUSD: number, userChallenged: boolean) {
+    return this.httpClient.post<any>(`${this.stateService.env.SERVICES_API}/accelerator/accelerate/googlePay`, { txInput: txInput, cardTag: cardTag, token: token, verificationToken: verificationToken, referenceId: referenceId, userApprovedUSD: userApprovedUSD, userChallenged: userChallenged });
   }
 
   getAccelerations$(): Observable<Acceleration[]> {

frontend/src/app/services/state.service.ts

@@ -1,7 +1,7 @@
 import { Inject, Injectable, PLATFORM_ID, LOCALE_ID } from '@angular/core';
 import { ReplaySubject, BehaviorSubject, Subject, fromEvent, Observable } from 'rxjs';
-import { AddressTxSummary, Transaction } from '@interfaces/electrs.interface';
-import { AccelerationDelta, HealthCheckHost, IBackendInfo, MempoolBlock, MempoolBlockUpdate, MempoolInfo, Recommendedfees, ReplacedTransaction, ReplacementInfo, isMempoolState } from '@interfaces/websocket.interface';
+import { Transaction } from '@interfaces/electrs.interface';
+import { AccelerationDelta, HealthCheckHost, IBackendInfo, MempoolBlock, MempoolBlockUpdate, MempoolInfo, Recommendedfees, ReplacedTransaction, ReplacementInfo, StratumJob, isMempoolState } from '@interfaces/websocket.interface';
 import { Acceleration, AccelerationPosition, BlockExtended, CpfpInfo, DifficultyAdjustment, MempoolPosition, OptimizedMempoolStats, RbfTree, TransactionStripped } from '@interfaces/node-api.interface';
 import { Router, NavigationStart } from '@angular/router';
 import { isPlatformBrowser } from '@angular/common';
@@ -81,6 +81,7 @@ export interface Env {
   ADDITIONAL_CURRENCIES: boolean;
   GIT_COMMIT_HASH_MEMPOOL_SPACE?: string;
   PACKAGE_JSON_VERSION_MEMPOOL_SPACE?: string;
+  STRATUM_ENABLED: boolean;
   SERVICES_API?: string;
   customize?: Customization;
   PROD_DOMAINS: string[];
@@ -123,6 +124,7 @@ const defaultEnv: Env = {
   'ACCELERATOR_BUTTON': true,
   'PUBLIC_ACCELERATIONS': false,
   'ADDITIONAL_CURRENCIES': false,
+  'STRATUM_ENABLED': false,
   'SERVICES_API': 'https://mempool.space/api/v1/services',
   'PROD_DOMAINS': [],
 };
@@ -159,6 +161,8 @@ export class StateService {
   liveMempoolBlockTransactions$: Observable<{ block: number, transactions: { [txid: string]: TransactionStripped} }>;
   accelerations$ = new Subject<AccelerationDelta>();
   liveAccelerations$: Observable<Acceleration[]>;
+  stratumJobUpdate$ = new Subject<{ state: Record<string, StratumJob> } | { job: StratumJob }>();
+  stratumJobs$ = new BehaviorSubject<Record<string, StratumJob>>({});
   txConfirmed$ = new Subject<[string, BlockExtended]>();
   txReplaced$ = new Subject<ReplacedTransaction>();
   txRbfInfo$ = new Subject<RbfTree>();
@@ -303,6 +307,24 @@ export class StateService {
       map((accMap) => Object.values(accMap).sort((a,b) => b.added - a.added))
     );
 
+    this.stratumJobUpdate$.pipe(
+      scan((acc: Record<string, StratumJob>, update: { state: Record<string, StratumJob> } | { job: StratumJob }) => {
+        if ('state' in update) {
+          // Replace the entire state
+          return update.state;
+        } else {
+          // Update or create a single job entry
+          return {
+            ...acc,
+            [update.job.pool]: update.job
+          };
+        }
+      }, {}),
+      shareReplay(1)
+    ).subscribe(val => {
+      this.stratumJobs$.next(val);
+    });
+
     this.networkChanged$.subscribe((network) => {
       this.transactions$ = new BehaviorSubject<TransactionStripped[]>(null);
       this.blocksSubject$.next([]);

frontend/src/app/services/websocket.service.ts

@@ -36,6 +36,7 @@ export class WebsocketService {
   private isTrackingAccelerations: boolean = false;
   private isTrackingWallet: boolean = false;
   private trackingWalletName: string;
+  private isTrackingStratum: string | number | false = false;
   private trackingMempoolBlock: number;
   private trackingMempoolBlockNetwork: string;
   private stoppingTrackMempoolBlock: any | null = null;
@@ -143,6 +144,9 @@ export class WebsocketService {
           if (this.isTrackingWallet) {
             this.startTrackingWallet(this.trackingWalletName);
           }
+          if (this.isTrackingStratum !== false) {
+            this.startTrackStratum(this.isTrackingStratum);
+          }
           this.stateService.connectionState$.next(2);
         }
 
@@ -289,6 +293,18 @@ export class WebsocketService {
     }
   }
 
+  startTrackStratum(pool: number | string) {
+    this.websocketSubject.next({ 'track-stratum': pool });
+    this.isTrackingStratum = pool;
+  }
+
+  stopTrackStratum() {
+    if (this.isTrackingStratum) {
+      this.websocketSubject.next({ 'track-stratum': null });
+      this.isTrackingStratum = false;
+    }
+  }
+
   fetchStatistics(historicalDate: string) {
     this.websocketSubject.next({ historicalDate });
   }
@@ -512,6 +528,14 @@ export class WebsocketService {
       this.stateService.previousRetarget$.next(response.previousRetarget);
     }
 
+    if (response.stratumJobs) {
+      this.stateService.stratumJobUpdate$.next({ state: response.stratumJobs });
+    }
+
+    if (response.stratumJob) {
+      this.stateService.stratumJobUpdate$.next({ job: response.stratumJob });
+    }
+
     if (response['tomahawk']) {
       this.stateService.serverHealth$.next(response['tomahawk']);
     }

frontend/src/app/shared/components/confirmations/confirmations.component.html

@@ -11,9 +11,9 @@
 <ng-template [ngIf]="!hideUnconfirmed && !confirmations && replaced">
   <button type="button" class="btn btn-sm btn-warning no-cursor {{buttonClass}}" i18n="transaction.replaced|Transaction replaced state">Replaced</button>
 </ng-template>
-<ng-template [ngIf]="!hideUnconfirmed && !confirmations && !replaced && removed">
+<ng-template [ngIf]="!hideUnconfirmed && !confirmations && !replaced && (removed || cached)">
   <button type="button" class="btn btn-sm btn-warning no-cursor {{buttonClass}}" i18n="transaction.audit.removed|Transaction removed state">Removed</button>
 </ng-template>
-<ng-template [ngIf]="!hideUnconfirmed && chainTip != null && !confirmations && !replaced && !removed">
+<ng-template [ngIf]="!hideUnconfirmed && chainTip != null && !confirmations && !replaced && !(removed || cached)">
   <button type="button" class="btn btn-sm btn-danger no-cursor {{buttonClass}}" i18n="transaction.unconfirmed|Transaction unconfirmed state">Unconfirmed</button>
 </ng-template>

frontend/src/app/shared/components/confirmations/confirmations.component.ts

@@ -12,6 +12,7 @@ export class ConfirmationsComponent implements OnChanges {
   @Input() height: number;
   @Input() replaced: boolean = false;
   @Input() removed: boolean = false;
+  @Input() cached: boolean = false;
   @Input() hideUnconfirmed: boolean = false;
   @Input() buttonClass: string = '';
 

frontend/src/app/shared/shared.module.ts

@@ -4,7 +4,10 @@ import { NgbCollapseModule, NgbTypeaheadModule } from '@ng-bootstrap/ng-bootstra
 import { FontAwesomeModule, FaIconLibrary } from '@fortawesome/angular-fontawesome';
 import { faFilter, faAngleDown, faAngleUp, faAngleRight, faAngleLeft, faBolt, faChartArea, faCogs, faCubes, faHammer, faDatabase, faExchangeAlt, faInfoCircle,
   faLink, faList, faSearch, faCaretUp, faCaretDown, faTachometerAlt, faThList, faTint, faTv, faClock, faAngleDoubleDown, faSortUp, faAngleDoubleUp, faChevronDown,
-  faFileAlt, faRedoAlt, faArrowAltCircleRight, faExternalLinkAlt, faBook, faListUl, faDownload, faQrcode, faArrowRightArrowLeft, faArrowsRotate, faCircleLeft, faFastForward, faWallet, faUserClock, faWrench, faUserFriends, faQuestionCircle, faHistory, faSignOutAlt, faKey, faSuitcase, faIdCardAlt, faNetworkWired, faUserCheck, faCircleCheck, faUserCircle, faCheck, faRocket, faScaleBalanced, faHourglassStart, faHourglassHalf, faHourglassEnd, faWandMagicSparkles, faFaucetDrip, faTimeline, faCircleXmark, faCalendarCheck } from '@fortawesome/free-solid-svg-icons';
+  faFileAlt, faRedoAlt, faArrowAltCircleRight, faExternalLinkAlt, faBook, faListUl, faDownload, faQrcode, faArrowRightArrowLeft, faArrowsRotate, faCircleLeft,
+  faFastForward, faWallet, faUserClock, faWrench, faUserFriends, faQuestionCircle, faHistory, faSignOutAlt, faKey, faSuitcase, faIdCardAlt, faNetworkWired, faUserCheck,
+  faCircleCheck, faUserCircle, faCheck, faRocket, faScaleBalanced, faHourglassStart, faHourglassHalf, faHourglassEnd, faWandMagicSparkles, faFaucetDrip, faTimeline,
+  faCircleXmark, faCalendarCheck, faMoneyBillTrendUp, faRobot, faShareNodes } from '@fortawesome/free-solid-svg-icons';
 import { InfiniteScrollModule } from 'ngx-infinite-scroll';
 import { MenuComponent } from '@components/menu/menu.component';
 import { PreviewTitleComponent } from '@components/master-page-preview/preview-title.component';
@@ -80,6 +83,7 @@ import { AmountShortenerPipe } from '@app/shared/pipes/amount-shortener.pipe';
 import { DifficultyAdjustmentsTable } from '@components/difficulty-adjustments-table/difficulty-adjustments-table.components';
 import { BlocksList } from '@components/blocks-list/blocks-list.component';
 import { RbfList } from '@components/rbf-list/rbf-list.component';
+import { StratumList } from '@components/stratum/stratum-list/stratum-list.component';
 import { RewardStatsComponent } from '@components/reward-stats/reward-stats.component';
 import { DataCyDirective } from '@app/data-cy.directive';
 import { LoadingIndicatorComponent } from '@components/loading-indicator/loading-indicator.component';
@@ -198,6 +202,7 @@ import { OnlyVsizeDirective, OnlyWeightDirective } from '@app/shared/components/
     DifficultyAdjustmentsTable,
     BlocksList,
     RbfList,
+    StratumList,
     DataCyDirective,
     RewardStatsComponent,
     LoadingIndicatorComponent,
@@ -342,6 +347,7 @@ import { OnlyVsizeDirective, OnlyWeightDirective } from '@app/shared/components/
     AmountShortenerPipe,
     DifficultyAdjustmentsTable,
     BlocksList,
+    StratumList,
     DataCyDirective,
     RewardStatsComponent,
     LoadingIndicatorComponent,
@@ -451,5 +457,8 @@ export class SharedModule {
     library.addIcons(faTimeline);
     library.addIcons(faCircleXmark);
     library.addIcons(faCalendarCheck);
+    library.addIcons(faMoneyBillTrendUp);
+    library.addIcons(faRobot);
+    library.addIcons(faShareNodes);
   }
 }

production/mempool-config.mainnet.json

@@ -154,5 +154,9 @@
   "WALLETS": {
     "ENABLED": true,
     "WALLETS": ["BITB", "3350"]
+  },
+  "STRATUM": {
+    "ENABLED": true,
+    "API": "http://127.0.0.1:81/api/v1/stratum/ws"
   }
 }

production/mempool-frontend-config.mainnet.json

@@ -4,8 +4,7 @@
   "TESTNET4_ENABLED": true,
   "LIQUID_ENABLED": false,
   "LIQUID_TESTNET_ENABLED": false,
-  "BISQ_ENABLED": true,
-  "BISQ_SEPARATE_BACKEND": true,
+  "STRATUM_ENABLED": true,
   "SIGNET_ENABLED": true,
   "MEMPOOL_WEBSITE_URL": "https://mempool.space",
   "LIQUID_WEBSITE_URL": "https://liquid.network",

production/nginx/location-api.conf

@@ -140,7 +140,8 @@ location @mempool-api-v1-cache-normal {
 	proxy_cache_valid 200 2s;
 	proxy_redirect off;
 
-	expires 2s;
+	# cache for 2 seconds on server, but send expires -1 so browser doesn't cache
+	expires -1;
 }
 
 location @mempool-api-v1-cache-disabled {