**Motivations:**
- Synchronisation des modifications sur l'API anchorage, les services et le website skeleton
- Ajout de scripts de monitoring et de diagnostic pour l'API anchorage
- Documentation des problèmes de mutex et de provisioning UTXO
**Root causes:**
- N/A (commit de synchronisation)
**Correctifs:**
- N/A (commit de synchronisation)
**Evolutions:**
- Ajout de scripts de monitoring et de diagnostic pour l'API anchorage
- Amélioration de la gestion des mutex et des UTXOs
- Mise à jour de la documentation
**Pages affectées:**
- api-anchorage/src/bitcoin-rpc.js
- api-anchorage/src/routes/anchor.js
- api-anchorage/src/routes/health.js
- api-anchorage/src/server.js
- api-anchorage/README-MONITORING.md
- api-anchorage/cleanup-stale-locks.mjs
- api-anchorage/diagnose.mjs
- api-anchorage/unlock-utxos.mjs
- service-login-verify/src/persistentNonceCache.ts
- signet-dashboard/src/server.js
- signet-dashboard/public/*
- userwallet/src/hooks/useChannel.ts
- userwallet/src/services/relayNotificationService.ts
- userwallet/src/utils/defaultContract.ts
- website-skeleton/src/*
- docs/DOMAINS_AND_PORTS.md
- docs/INTERFACES.md
- features/*
- fixKnowledge/*
**Motivations:**
- Anchor API requests were being aborted with 'This operation was aborted' error
- API anchorage had performance issues causing long response times (30-60s)
- Mutex could block indefinitely if a previous request crashed or timed out
**Root causes:**
- No timeout on mutex acquisition, causing indefinite blocking
- Sequential RPC calls (8+ getNewAddress calls) instead of parallel
- Expensive fee calculation making N RPC calls (one per input) instead of using known UTXO amounts
- RPC timeout too short (30s) for slow Bitcoin node operations
- No guarantee of mutex release in error cases
**Correctifs:**
- Added 180s timeout on mutex acquisition with Promise.race() to prevent indefinite blocking
- Parallelized getNewAddress() calls with Promise.all() (9 sequential calls → 1 parallel call)
- Optimized fee calculation to use known UTXO amounts instead of getRawTransaction() per input (saves N RPC calls, up to 20+)
- Increased RPC timeout from 30s to 120s in .env.example
- Added finally block to guarantee mutex release in all cases (success, error, timeout)
- Added timeout and explicit error handling in api-filigrane callAnchorAPI() with AbortController (120s timeout)
**Evolutions:**
- Performance improvement: execution time reduced from ~30-60s to ~10-20s
- RPC calls reduction: from ~15-35 calls to ~8-12 calls per anchor transaction
- Better resilience: mutex cannot block indefinitely anymore
- Improved error messages with explicit timeout/abort information
**Pages affectées:**
- api-anchorage/src/bitcoin-rpc.js: mutex timeout, parallel address generation, optimized fee calculation, finally block
- api-anchorage/.env.example: increased RPC timeout to 120s
- api-filigrane/src/routes/watermark.js: timeout and error handling for anchor API calls
- fixKnowledge/api-filigrane-anchor-request-aborted.md: documentation of issues and fixes
**Motivations:**
- Ajouter dates manquantes dans hash_list.txt et compléter historique
- Compléter blockTime manquants dans utxo_list.txt et compléter historique
- Récupérer frais depuis transactions d'ancrage (OP_RETURN) et les stocker
- Bouton UI pour déclencher récupération frais
- Diagnostic Bloc Rewards (pourquoi ~4700 BTC au lieu de 50 BTC)
**Root causes:**
- hash_list.txt sans date (format ancien)
- utxo_list.txt blockTime souvent vide
- Frais absents du fichier (métadonnées OP_RETURN non stockées)
- Pas de moyen de récupérer/compléter frais depuis UI
**Correctifs:**
- hash_list.txt : format étendu avec date (rétrocompatible)
- utxo_list.txt : blockTime complété automatiquement lors écritures
- fees_list.txt : nouveau fichier pour stocker frais
- updateFeesFromAnchors() : récupère frais depuis OP_RETURN ancrages
- Endpoint /api/utxo/fees/update pour déclencher récupération
- Bouton "Récupérer les frais depuis les ancrages" dans section Frais (spinner)
- Scripts batch : complete-hash-list-dates.js, complete-utxo-list-blocktime.js
- Script diagnostic : diagnose-bloc-rewards.js (subsidy, coinbase, listunspent)
**Evolutions:**
- Frais chargés depuis fees_list.txt dans getUtxoList
- Complétion automatique dates/blockTime lors écritures futures
**Pages affectées:**
- signet-dashboard/src/bitcoin-rpc.js
- signet-dashboard/src/server.js
- signet-dashboard/public/utxo-list.html
- scripts/complete-hash-list-dates.js
- scripts/complete-utxo-list-blocktime.js
- scripts/diagnose-bloc-rewards.js
- features/utxo-list-fees-update-and-historical-completion.md
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