**Motivations:**
- Fix insufficient UTXO amount error in anchor API
- Ensure continuous availability of usable UTXOs for anchor transactions
- Improve anchor transaction reliability and efficiency
**Root causes:**
- UTXO selection logic was too restrictive, rejecting UTXOs larger than needed
- No automatic provisioning of new usable UTXOs when existing ones were not suitable
- Algorithm prevented efficient use of available UTXOs
**Correctifs:**
- Refactored createAnchorTransaction() to provision 7 UTXOs of 2500 sats on each anchor
- Use single large UTXO to create 1 anchor output + 7 provisioning outputs + change
- Simplified UTXO selection: single large UTXO per transaction instead of multiple small ones
- Added UTXO provisioning logic in signet-dashboard
- Enhanced Bitcoin RPC methods in both api-anchorage and signet-dashboard
- Added documentation in fixKnowledge/api-anchorage-utxo-provisioning.md
**Evolutions:**
- Enhanced signet-dashboard with new pages (hash-list, utxo-list, join-signet, api-docs)
- Improved Bitcoin RPC client with better error handling and UTXO management
- Added cache files for hash and UTXO lists
- Updated api-faucet with improved server configuration
- Enhanced anchor count tracking
**Pages affectées:**
- api-anchorage/src/bitcoin-rpc.js: Complete refactor of createAnchorTransaction()
- api-anchorage/src/routes/anchor.js: Enhanced anchor route
- api-anchorage/src/server.js: Server configuration updates
- signet-dashboard/src/bitcoin-rpc.js: Added comprehensive Bitcoin RPC client
- signet-dashboard/src/server.js: Enhanced server with new routes
- signet-dashboard/public/: Added new HTML pages and updated app.js
- api-faucet/src/server.js: Server improvements
- api-faucet/README.md: Documentation updates
- fixKnowledge/api-anchorage-utxo-provisioning.md: New documentation
- anchor_count.txt, hash_list.txt, utxo_list.txt: Tracking files
**Motivations:**
- Fix 401 error on anchorage API due to .env not being loaded correctly
- Fix 502 error on dashboard due to service not running
- Add backup script for mining keys and wallet descriptors
- Improve service management with startup scripts and systemd services
**Root causes:**
- dotenv.config() was called without explicit path, causing .env to be loaded from wrong directory
- Services were not started automatically, causing 502 errors
- No backup mechanism for critical keys and wallet data
**Correctifs:**
- Improved .env loading in api-anchorage/src/server.js with explicit path
- Improved .env loading in signet-dashboard/src/server.js with explicit path
- Added backups/ directory to .gitignore to prevent committing sensitive data
- Created export-backup.sh script for backing up mining keys and wallet descriptors
**Evolutions:**
- Added api-anchorage/start.sh script for proper service startup
- Added api-anchorage/anchorage-api.service systemd service file
- Added fixKnowledge/api-anchorage-401-error.md documentation
- Added fixKnowledge/dashboard-502-error.md documentation
- Updated mempool submodule
**Pages affectées:**
- .gitignore (added backups/)
- api-anchorage/src/server.js (improved .env loading)
- api-anchorage/start.sh (new)
- api-anchorage/anchorage-api.service (new)
- signet-dashboard/src/server.js (improved .env loading)
- export-backup.sh (new)
- fixKnowledge/api-anchorage-401-error.md (new)
- fixKnowledge/dashboard-502-error.md (new)
- mempool (submodule updated)
