v6.3.1

[6.3.1] - 2026-03-04

Added

• Added configurable statement_timeout for DB Sync queries. Configurable via dbSync.statementTimeout in config or BLOCKFROST_CONFIG_DBSYNC_STATEMENT_TIMEOUT env var (value in milliseconds). Defaults to no timeout (PostgreSQL server default)
• Configurable slow request detection. When server.slowRequestThresholdMs (or env BLOCKFROST_CONFIG_SERVER_SLOW_REQUEST_THRESHOLD_MS) is set, a warning is logged for any request that has not completed within the given number of milliseconds. Disabled by default
• Configurable DB connectivity timeout for the /health endpoint. When server.healthCheckDbTimeoutMs (or env BLOCKFROST_CONFIG_SERVER_HEALTH_CHECK_DB_TIMEOUT_MS) is set, /health returns { is_healthy: false } instead of hanging if the DB connection takes longer than the configured value. Disabled by default
• Configurable connection timeout for acquiring a DB connection from the pool. Set via dbSync.connectionTimeoutMs in config or BLOCKFROST_CONFIG_DBSYNC_CONNECTION_TIMEOUT_MS env var (value in milliseconds). Defaults to no timeout

Changed

• Nutlink:
  • Nutlink metadata fetch errors are no longer reported to Sentry
  • Improved error message and log level changed from error to warn

What's Changed

• chore: don't report nutlink metadata fetch errors to sentry, set log … by @slowbackspace in #305
• fix: prevent handle leak and add configurable statement_timeout for D… by @slowbackspace in #308
• chore: add dbSync.connectionTimeoutMs by @slowbackspace in #309
• fix: dev build by @slowbackspace in #310
• chore: log the reason for health check fail by @slowbackspace in #311

Full Changelog: v6.3.0...v6.3.1

v6.3.0

[6.3.0] - 2026-03-02

Added

• tx_slot, block_height and block_time fields to /accounts/{stake_address}/delegations, /accounts/{stake_address}/registrations, /accounts/{stake_address}/withdrawals, /accounts/{stake_address}/mirs endpoints
• treasury_donation field to /txs/{hash} endpoint

What's Changed

• feat: add tx_slot and block_time to /accounts/:sa/*, treasury_donation in /txs/:tx_hash by @slowbackspace in #306

Full Changelog: v6.2.0...v6.3.0

v6.2.0

[6.2.0] - 2026-02-12

Added

• New registered field in /accounts/:stake_address response indicating whether the stake address is currently registered

Fixed

• pool_id in /accounts/:stake_address now correctly returns null if delegation occurred before the latest deregistration

What's Changed

• fix: active and pool_id in stake address by @slowbackspace in #301
• chore: pm2 instance limit configuration by @mkmks in #302

New Contributors

• @mkmks made their first contribution in #302

Full Changelog: v6.1.1...v6.2.0

v6.1.1

What's Changed

• chore: include pm2 instance number in databaseSyncApplicationName by @slowbackspace in #300

Full Changelog: v6.1.0...v6.1.1

v6.1.0

[6.1.0] - 2025-01-09

Changed

• Optimized /accounts/:stake_address/addresses query performance
  • Requires new index: bf_idx_tx_out_sa_paycred_script_id (see README)

What's Changed

• ci: update blockfrost-tests and lint by @hlolli in #298
• chore: faster /accounts/:stake_address/addresses by @slowbackspace in #299

New Contributors

• @hlolli made their first contribution in #298

Full Changelog: v6.0.0...v6.1.0

v6.0.0

[6.0.0] - 2025-12-17

Added

• Built-in support for aggregating Prometheus metrics in PM2 cluster mode
  • Integrated fastify-metrics for Prometheus metrics collection available at /prometheus endpoint
  • Added support for pm2-prom-module to enable cluster-wide metrics aggregation across all pm2 app instances

Changed

• Upgraded dependencies
• Drop support for Node < 20
• PostgreSQL database connection now uses customizable application name for better monitoring
  • Default: blockfrost-backend-ryo@<hostname>
  • Can be configured via BLOCKFROST_CONFIG_APPLICATION_NAME environment variable or dbSync.applicationName config property
• /prometheus endpoint now integrates advanced metrics from fastify-metrics

Fixed

• rewards_sum calculation in /accounts/:stake_addr

What's Changed

• chore: bump tests package by @vladimirvolek in #291
• Chore/upgrade deps by @slowbackspace in #292
• chore: set application_name for dbsync conn by @slowbackspace in #295
• feat: pm2 cluster-enabled prometheus metrics by @slowbackspace in #296
• chore: bump tests by @slowbackspace in #293
• fix: add refunds_sum to rewards_sum by @slowbackspace in #297

Full Changelog: v5.0.0...v6.0.0

v5.0.0

[5.0.0] - 2025-12-02

Added

• New endpoint: /accounts/:stake_address/transactions
  • Returns transactions involving the specified stake address, with support for paging and filtering by block range.

Fixed

• Fixed issue where stale dRep metadata were returned when newer registrations had invalid metadata (/governance/dreps/:drep_id/metadata)
  • Previously, queries would return outdated valid metadata instead of the latest registration with error information
  • Now correctly returns the most recent registration with error details if necessary
  • Error object structure:

  {
    "code": "HASH_MISMATCH" | "CONNECTION_ERROR" | "HTTP_RESPONSE_ERROR" | "DECODE_ERROR" | "SIZE_EXCEEDED" | "UNKNOWN_ERROR",
    "message": "Human-readable description of the error"
  }

  • If metadata are available, the error field is omitted

What's Changed

• feat: /accounts/:stake_cred/transactions by @slowbackspace in #285
• Use new tests and remove Sanchonet leftovers by @vladimirvolek in #288
• fix: stale drep metadata were returned when newer registrations had i… by @slowbackspace in #289
• chore: release 5.0.0 by @slowbackspace in #290

Full Changelog: v4.3.0...v5.0.0

v4.3.0

[4.3.0] - 2025-10-08

Added

• Included proposal reference fields in /governance/drep/:drep_id/votes
  • Each vote now includes proposal_id and proposal_tx_hash proposal_cert_index

Fixed

• /network/eras duplicate era on Preview testnet

What's Changed

• chore: release 4.2.0 by @slowbackspace in #280
• upgrade nixpkgs and nodejs by @cleverca22 in #281
• Revert "upgrade nixpkgs and nodejs" by @vladimirvolek in #282
• Upgrade nixpkgs and nodejs by @vladimirvolek in #283
• fix(network/eras): switch to epoch_param table by @sorki in #284
• feat: proposal ref in /governance/drep/:drep_id/votes by @slowbackspace in #286
• chore: release 4.3.0 by @slowbackspace in #287

New Contributors

• @cleverca22 made their first contribution in #281

Full Changelog: v4.2.0...v4.3.0

v4.2.0

[4.2.0] - 2025-09-24

Added

• Support for Governance Action Identifier (CIP-129)

  • New endpoints for querying with Gov Action ID : /governance/proposals/:gov_action_id
  • Proposal response now includes an id field containing the governance action identifier

• New error field for off-chain metadata fetch failures

  • /pools/extended, /pools/:pool_id/metadata and /governance/proposals/:gov_action_id responses include an error object in the metadata field when off-chain metadata fetch fails

What's Changed

• chore: bump tests package by @vladimirvolek in #272
• feat: query gov proposal with gov_action id by @slowbackspace in #276
• Chore/offchain errors by @slowbackspace in #277
• chore: release 4.2.0 by @slowbackspace in #280

Full Changelog: v4.1.2...v4.2.0

v4.1.2

[4.1.2] - 2025-06-09

Fixed

• DReps updates with action updated were incorrectly reported as deregistered in /accounts/:drep_id/updates

What's Changed

• chore(readme): add indices to speed up dreps delegators endpoint by @slowbackspace in #269
• fix(dreps): report "update" actions by @slowbackspace in #270
• fix(dreps): report "update" actions by @slowbackspace in #271

Full Changelog: v4.1.1...v4.1.2