RELEASE_NOTES.md

title	Release notes

Release notes

v0.187.4

• Date: 2026-07-14
• Version: 0.187.4

Summary

This release keeps the published release history current by recording the prior v0.187.3 entry.

Additional Changes

• Updated the release history to include the prior v0.187.3 entry so recent changes remain easy to review.

v0.187.3

• Date: 2026-07-07
• Version: 0.187.3

Summary

This release improves Conway redeemer decoding so block syncing keeps moving when duplicate redeemer keys appear in block data accepted by cardano-node.

Bug Fixes

• Fixed Conway redeemer decoding so duplicate (tag, index) keys now trigger lenient decoding after a duplicate map key error, while redeemer hashes still come from the original CBOR bytes.

v0.187.1

• Date: 2026-07-07
• Version: 0.187.1

Summary

This release improves Dijkstra block compatibility and restores correct validation for genesis staking pool metadata and VRF keys.

Breaking Changes

• Updated Dijkstra block bodies to the new Transactions, InvalidTransactions, LeiosCertificate, and PerasCertificate layout, and applications that read or build Dijkstra blocks must now validate them with blake2b256(block_body).

Bug Fixes

• Fixed genesis staking pool parsing so Shelley publicKey, vrf, owners, and metadata aliases load correctly and pools validate with the expected VRF key hash.

• Improved Dijkstra decoding and encoding so inline transactions, transaction offsets, and Plutus V4 witness script offsets match the reference CDDL.

v0.187.0

• Date: 2026-07-06
• Version: 0.187.0

Summary

This release adds Dijkstra reference-script size checks and updates Leios certificate handling for prototype-2026w27, including a breaking accessor update for downstream consumers.

New Features

• Added Dijkstra reference-script size limit enforcement so oversized scripts now fail against configured per-transaction and per-block limits with typed errors.

Breaking Changes

• Updated Leios block headers to expose typed LeiosCertified and LeiosAnnouncement accessors instead of LeiosEndorserBlockRef, and the decoder now rejects malformed placeholder certificates and other wrongly shaped payloads.

Bug Fixes

• Fixed Dijkstra block encoding so Leios certificates now use the prototype-2026w27 in-body layout and include empty transaction component slots when a Leios certificate is present.

• Improved Leios certificate decoding so only well-formed certificates with Signers and AggregatedSignature fields load successfully.

v0.186.3

• Date: 2026-07-06
• Version: 0.186.3

Summary

This release fixes Conway witness decoding for tolerated duplicate set members and keeps CI linting tooling current.

Bug Fixes

• Fixed Conway witness decoding so historical blocks with duplicate vkey witnesses, bootstrap witnesses, native scripts, or Plutus data now decode successfully in Conway protocol versions 9 through 11 instead of failing with duplicate member in set, while Plutus script sets still reject duplicates.

Additional Changes

• Updated the lint workflow to use golangci-lint action v9.3.0, leaving application runtime unchanged.

v0.186.2

• Date: 2026-07-05
• Version: 0.186.2

Summary

This release tightens duplicate-member validation in Dijkstra and Conway tagged set decoding and makes pre-Conway MultiAsset decoding more tolerant of duplicate map keys.

Bug Fixes

• Strengthened duplicate-member validation in Dijkstra and Conway tagged set decoding and added negative fixtures for duplicate witness, redeemer, sub-transaction, input, and guard set members.

• Improved pre-Conway MultiAsset decoding to accept duplicate PolicyID and AssetName keys with last-wins behavior while Conway and Dijkstra still reject duplicate MultiAsset keys after decode.

Additional Changes

• Refined the prior v0.186.1 release note wording for clarity and consistency.

v0.186.1

• Date: 2026-06-30
• Version: 0.186.1

Summary

This release fixes operational certificate verification compatibility, corrects Dijkstra redeemer decoding, preserves protocol parameter cost model updates during deterministic data conversion, refreshes key dependencies, and updates workflow tooling.

Bug Fixes

• Fixed operational certificate signing and verification so the library now uses the correct raw certificate bytes, allowing real Cardano operational certificates and headers to verify correctly instead of being rejected.
• Corrected Dijkstra redeemer decoding so redeemer data and execution units stay intact during block decoding and synchronization instead of failing to load.
• Updated Conway and Dijkstra protocol parameter updates to preserve cost model updates during deterministic data conversion, so governance and script context consumers retain those values.

Additional Changes

• Updated github.com/blinklabs-io/plutigo to v0.1.16, bringing upstream Plutus related security, validation, and performance improvements to consumers of this module.
• Refreshed github.com/blinklabs-io/ouroboros-mock to v0.14.0, updating the bundled mock and fixture dependency for developers and test consumers.
• Advanced actions/setup-go to v6.5.0, refreshing Go toolchain setup in repository workflows.

v0.186.0

• Date: 2026-06-25
• Version: 0.186.0

Summary

This release restores GetDRepState compatibility with cardano-node and cardano-cli for Conway governance workflows, and it strengthens TxSubmission message encoding and decoding reliability so protocol compatibility stays more reliable over time.

Bug Fixes

• Restored GetDRepState compatibility so cardano-node, cardano-cli, and other clients can decode DRep state correctly with the expected four element wire format, including delegator information and the correct anchor encoding shape.

Additional Changes

• Strengthened TxSubmission message coverage with broader table driven and byte exact CBOR checks across supported message types, improving regression detection and confidence in protocol message compatibility.

v0.185.0

• Date: 2026-06-23
• Version: 0.185.0

Summary

This release renames the Leios test network identifier to Musashi, refreshes benchmark reference documentation with current commands and results, and updates RELEASE_NOTES.md to keep the published release history current.

Breaking Changes

• Updated the Cardano test network identifier from Leios to Musashi, requiring integrations that select the former test network value to switch to the new name.

Additional Changes

• Refreshed benchmark reference documentation with current commands, a Go 1.25.8 environment on Linux arm64, and updated benchmark results.

• Documented the prior v0.184.0 entry in RELEASE_NOTES.md.

• Polished the wording in the v0.184.0 release notes in RELEASE_NOTES.md.

• Refined the formatting and terminology in the v0.184.0 release notes in RELEASE_NOTES.md.

v0.184.0

• Date: 2026-06-22
• Version: 0.184.0

Summary

This release expands Dijkstra and Leios interoperability, improves CBOR safety and throughput, refreshes security related dependencies, and keeps examples, continuous integration, fuzzing, linting, and release history aligned with current library behavior.

New Features

• Added broader Dijkstra and Leios header interoperability so ranking blocks can carry Leios header extensions, endorser block references decode from both supported wire shapes, and Leios notification requests can stay open without interrupting other active protocols when no callback is configured.

• Expanded Leios prototype interoperability so endorser block references, block transaction exchanges, and pushed vote notifications decode across the supported prototype and library message shapes.

Bug Fixes

• Fixed generic CBOR value decoding so maps that use null or undefined keys now decode cleanly instead of failing or panicking, including nested metadata shapes.

• Introduced a dedicated VRF proof verification failure error so integrations can distinguish invalid proofs from malformed inputs, while benchmark coverage now flags only unexpected verification errors.

Performance

• Improved generic CBOR encode and decode throughput by reducing cache lock contention, while invalid generic inputs now return clear errors for unsupported values.

Security

• Updated golang.org/x/crypto to v0.53.0 and refreshed golang.org/x/sys to v0.46.0 across the main module and example modules.

Additional Changes

• Refreshed example module dependencies so the example builds stay tidy after the latest dependency updates.

• Updated github.com/blinklabs-io/ouroboros-mock to v0.13.0.

• Advanced GitHub Actions checkout workflows to v7.0.0.

• Replaced the module guard in lint checks with gomodguard_v2.

• Tightened fuzz workflow package targeting so each fuzz job runs against the exact package that owns its target.

• Documented the prior v0.183.0 release entry in RELEASE_NOTES.md.

v0.183.0

• Date: 2026-06-12
• Version: 0.183.0

Summary

This release expands local state queries with account state access, moves Leios related integrations to the Dijkstra era model, prevents validation enabled pipelines from applying blocks that never passed validation, and updates RELEASE_NOTES.md to include the prior v0.182.0 entry.

New Features

• Added GetAccountState support so clients can request treasury and reserves without decode failures or dropped connections, while calls before Conway now return a clear error instead of sending an unsupported query.

Breaking Changes

• Updated Leios era handling so code importing Leios specific packages or relying on EnableLeiosEra must migrate to the Dijkstra era model and the new package locations for Leios overlay types.

Bug Fixes

• Fixed validation enabled pipeline enforcement so ErrBlockNotValidated now surfaces when a block never passed validation, and validation enabled pipelines no longer apply blocks that skipped validation.

Additional Changes

• Refreshed RELEASE_NOTES.md to include the prior v0.182.0 entry.

v0.182.0 - governance constructors and 32-bit compatibility

• Date: 2026-06-09
• Version: 0.182.0

Summary

This release adds Conway governance helper APIs with stronger validation for proposal and action creation, expands governance query examples and embedded documentation, restores reliable 32 bit builds, refreshes key dependencies and workflow upkeep, and keeps RELEASE_NOTES.md aligned with the latest published history.

New Features

• Added Conway governance helper APIs so applications can build proposal procedures and governance actions with stronger validation and safer value handling.

Bug Fixes

• Fixed 32 bit compatibility so supported builds no longer fail on overflowing integer comparisons and casts.

Additional Changes

• Expanded governance query examples and Conway governance guidance so embedded documentation explains the newer query flows more clearly.
• Updated github.com/blinklabs-io/plutigo to v0.1.15.
• Refreshed github.com/blinklabs-io/ouroboros-mock to v0.12.0.
• Advanced actions/checkout to v6.0.3 in workflow automation.
• Documented the prior v0.181.0 release entry in RELEASE_NOTES.md.

v0.181.0 - Leios support and ledger metadata helpers

• Date: 2026-06-07
• Version: 0.181.0

Summary

This release expands Leios support through the Leios testnet network definition and typed endorser block handling, adds ledger metadata helpers for JSON parsing and metadata CBOR workflows, introduces voting procedure helper APIs for safer value management, and refreshes RELEASE_NOTES.md with the prior release entries.

New Features

• Added the Leios testnet network definition so standard network lookups can target the Leios testnet with the published network magic 164 and its bootstrap peer.
• Improved voting procedure helpers so applications can add or replace entries by value, look up existing procedures, clone procedure sets, receive defensive copies, and keep existing CBOR encoding behavior unchanged.
• Expanded metadata helpers so applications can parse metadata JSON with or without detailed schemas, keep metadata map encoding in deterministic canonical CBOR order, and build Shelley auxiliary data that carries metadata only.

Breaking Changes

• Updated Leios endorser block handling so applications now receive typed CIP-0164 endorser blocks with stricter CBOR validation, and downstream code must rename the exported alias from LeiosEndorderBlock to LeiosEndorserBlock.

Additional Changes

• Refreshed RELEASE_NOTES.md to include the prior v0.180.0 and v0.180.1 entries so the recent release history remains complete.

v0.180.1 - Conway mint encoding fix

• Date: 2026-06-03
• Version: 0.180.1

Summary

This release fixes Conway and later Plutus V1 and V2 mint encoding so transaction data now matches ledger expectations during building, serialization, and evaluation, preventing incompatible mint representations while leaving earlier protocol versions unchanged.

Bug Fixes

• Fixed Conway and later Plutus V1 and V2 mint encoding so zero quantity mint values now match the ledger format expected during Conway transaction building, serialization, and validation.

v0.180.0 - Introduce Dijkstra support and strengthen reliability

• Date: 2026-06-02
• Version: 0.180.0

Summary

This release introduces initial Dijkstra era support, corrects Leios committee voting and stake parameter handling, fixes rewards calculation when total pool rewards fall below the fixed fee, hardens protocol behavior against blockfetch panics from invalid configurations, and includes routine dependency, formatting, and test maintenance.

New Features

• Added initial Dijkstra era support so integrations can track the latest era coverage in the library.

Bug Fixes

• Corrected Leios vote and EB certificate handling so stake based committees behave as expected.
• Refined Leios stake and parameter handling so related configuration paths behave consistently.
• Fixed rewards calculation so pools handle cases where total pool rewards are lower than the fixed fee.
• Hardened protocol startup behavior so invalid blockfetch configurations fail cleanly instead of panicking.

Additional Changes

• Updated rewards formatting cleanup so rewards related output stays clearer and more consistent.
• Refreshed ledger test cleanup so routine coverage remains easier to maintain.
• Advanced github.com/blinklabs-io/plutigo from v0.1.13 to v0.1.14.

v0.179.0 - LeiosVotes mini-protocol

• Date: 2026-05-27
• Version: 0.179.0

Summary

This release adds the LeiosVotes mini-protocol as the primary change for CIP-0164 vote diffusion, connects it to library level protocol handling, expands embedded protocol references and limits guidance, and includes a release-history clarification update in RELEASE_NOTES.md.

New Features

• Added the LeiosVotes mini-protocol so node to node integrations can diffuse CIP-0164 votes through dedicated client and server handling.
• Expanded connection setup and embedded protocol references so Connection.LeiosVotes() and WithLeiosVotesConfig expose the new vote diffusion flow alongside updated limits, protocol documentation, and validation coverage.

Additional Changes

• Documented the mistagging clarification in RELEASE_NOTES.md so release history now states that no versions were published between v0.171.0 and v0.178.0.

v0.178.0 - CBOR diagnostics APIs and example command migration

• Date: 2026-05-26
• Version: 0.178.0

Summary

This release migrates starter-kit example commands into gOuroboros and reorganizes them as self-contained example modules, adds Cardano-aware CBOR diagnostic formatting plus public diagnostics APIs with tests and benchmarks, and includes dependency, security, CI, and release-notes maintenance updates.

New Features

• Added built-in example commands so common node tasks now ship with the library instead of requiring a separate starter kit.
• Expanded CBOR diagnostics so Cardano data now displays clearer transaction, block, script, and address details during inspection.
• Introduced public CBOR diagnostics APIs so applications can inspect encoded data through reusable parsing, formatting, tests, and benchmarks.

Security

• Hardened bundled cryptography dependencies by updating golang.org/x/crypto to v0.52.0 and refreshing indirect golang.org/x/sys to v0.45.0.

Additional Changes

• Reorganized the included example commands into self-contained example modules so each example can build and run with its own local module setup.
• Updated github.com/utxorpc/go-codegen to v0.19.2.
• Refreshed the golangci-lint GitHub Action to v9.2.1.
• Documented the prior v0.171.0 release entry in RELEASE_NOTES.md.

There were no releases between v0.171.0 and v0.178.0 due to a mistagging

v0.171.0 - local state query expansion and ledger validation fixes

• Date: 2026-05-21
• Version: 0.171.0

Summary

This release expands LocalStateQuery with GetLedgerPeerSnapshot support for node to client protocol version 19 and later, strengthens distributed message queue expiration checks through explicit time validation with ValidateMessageTTLAt, improves ledger failure reporting by decoding incomplete withdrawals into typed results, and includes notable dependency and tooling maintenance alongside collateral return regression test cleanup.

New Features

• Added GetLedgerPeerSnapshot support so LocalStateQuery can return ledger peer snapshots on node to client protocol version 19 and later.
• Improved distributed message queue expiration checks so ValidateMessageTTLAt can validate message TTLs against an explicit evaluation time for deterministic handling.

Bug Fixes

• Corrected incomplete withdrawal failure decoding so ledger validation now returns typed results for IncorrectWithdrawals across Shelley family and Conway eras.

Additional Changes

• Refined collateral return regression cleanup so later ledger validation checks keep reliable test state.
• Updated github.com/blinklabs-io/plutigo to v0.1.13.
• Refreshed github.com/btcsuite/btcd/btcutil to v1.2.0.
• Modernized github.com/blinklabs-io/ouroboros-mock to v0.11.0.
• Advanced andrewslotin/go-proxy-pull-action to v1.5.0.

v0.170.1 - ledger and protocol reliability fixes

• Date: 2026-05-15
• Version: 0.170.1

Summary

This release hardens validation for withdrawals, collateral returns, unknown Conway redeemer tags, and unsupported script validation paths, improves protocol reliability during message draining, startup configuration, and version negotiation, strengthens block and data validation, corrects pipeline drain accounting, and includes documentation, regression test, and release notes maintenance updates.

Bug Fixes

• Corrected withdrawal validation so key credential withdrawals require the matching witness before funds can move.
• Strengthened collateral return checks so transactions fail when a collateral return exceeds the allowed amount.
• Hardened block validation so non canonical leader proof key hashes fail validation instead of slipping through.
• Secured validation fallback behavior so unsupported script validation paths stop with a clear error instead of continuing.
• Stabilized handshake handling so unsupported versions fail cleanly without triggering nil crashes.
• Normalized node to client setup so nil configurations no longer break constructor behavior.
• Tightened Conway redeemer tag validation so unknown redeemer tags fail immediately with a clear error.
• Refined data decoding so duplicate map keys are rejected instead of being accepted silently.
• Balanced pipeline drain accounting so in flight apply work remains counted until drain completes.
• Filtered message drain results so expired notifications do not remain in returned results.

Additional Changes

• Clarified block local verification guidance so library behavior is easier to interpret in embedded documentation.
• Verified collateral return reset handling with regression coverage so later validation checks remain reliable.

v0.170.0 - peer sharing and protocol hardening

• Date: 2026-05-14
• Version: 0.170.0

Summary

This release adds peer sharing mini protocol support with handshake gated behavior and interoperability coverage, aligns distributed message handling with the latest CIP-0137 behavior for stronger validation, refines CBOR panic recovery so unexpected failures remain visible, expands metadata and message fuzzers to strengthen malformed input handling, and updates RELEASE_NOTES.md with the prior release entry.

New Features

• Added peer sharing so node to node connections can request peer addresses only when both sides advertise support, while interoperability coverage confirms the expected behavior against reference nodes.

Bug Fixes

• Corrected distributed message validation so message IDs, wire formats, version handling, and peer behavior stay aligned with the latest CIP-0137 expectations for safer integrations.
• Refined CBOR panic recovery so unsupported map key cases still return clear decode errors while unexpected panics surface instead of being masked.

Additional Changes

• Expanded metadata and message fuzzing so malformed inputs across metadata, auxiliary data, and protocol message decoding fail with errors instead of crashing.
• Updated RELEASE_NOTES.md to add the prior v0.169.0 release entry.

v0.169.0 - CBOR decode diagnostics and protocol reliability

• Date: 2026-05-12
• Version: 0.169.0

Summary

This release improves CBOR decode diagnostics with richer structured context, fixes the BlockFetch shutdown race so shutdown remains safe when a connection is already closing, makes malformed generic metadata map keys fail with a clear error instead of panicking, updates github.com/fxamacker/cbor/v2 to v2.9.2, updates golang.org/x/crypto to v0.51.0, updates github.com/blinklabs-io/plutigo to v0.1.11, and adds the release-notes maintenance update for the prior entry.

New Features

• Enhanced CBOR decode diagnostics so decode failures report richer structured context, including byte offsets, expected versus found details, raw byte previews, transaction level error context, and clearer validation error diagnostics.

Bug Fixes

• Fixed the BlockFetch shutdown race so repeated shutdown calls now succeed cleanly and remain safe when the connection is already closing.
• Corrected generic metadata map decoding so malformed map keys now fail with a clear error instead of triggering a nil pointer panic.

Security

• Updated golang.org/x/crypto to v0.51.0 and refreshed indirect golang.org/x/sys to v0.44.0.

Additional Changes

• Updated github.com/fxamacker/cbor/v2 to v2.9.2, bringing upstream CBOR hardening and bug fix improvements.
• Refined github.com/blinklabs-io/plutigo from v0.1.9 to v0.1.11, bringing upstream fixes and performance improvements.
• Added the prior v0.168.0 release entry to RELEASE_NOTES.md.

v0.168.0 - Conway PV9 gating and CBOR diagnostic navigation

• Date: 2026-05-09
• Version: 0.168.0

Summary

This release adds Conway PV9 governance checks that reject governance actions and parameter updates that must wait until Plomin or PV10, adds CBOR inspection tools that can jump to a byte position and show an annotated hex view, fixes blockfetch cleanup during disconnect and shutdown scenarios so later requests do not stall, and expands ledger regression coverage for forward compatible handling when future cost model lists grow.

New Features

• Added Conway governance checks that reject governance actions and restricted parameter changes that are not allowed until Plomin or PV10, improving protocol version correctness and producing clearer validation failures.
• Expanded CBOR diagnostics so callers can find nodes and paths by byte offset, review annotated hex views, and decode one or more items into diagnostic trees for easier binary inspection and troubleshooting.

Bug Fixes

• Fixed blockfetch request cleanup so disconnects, shutdowns, and error paths release correctly and later GetBlock and GetBlockRange calls do not hang behind an orphaned busy lock.

Additional Changes

• Expanded ledger and compatibility coverage for longer cost model lists so forward compatible Conway and Plutus handling is validated across encoding, parameter updates, and genesis loading.

v0.167.0 - diagnostic parsing and DMQ node-to-client support

• Date: 2026-05-05
• Version: 0.167.0

Summary

This release adds a new CBOR diagnostic parser and CIP-0137 DMQ node-to-client support, hardens rational value serialization and protocol startup cleanup, aligns Conway and Plomin protocol version handling, and includes routine dependency, documentation, and lint maintenance.

New Features

• Added a CBOR diagnostic parser that can show offsets, preserve formatting detail, and make complex encoded data easier to inspect and troubleshoot.
• Expanded CIP-0137 DMQ node-to-client support so applications can submit and receive distributed messages through dedicated local message protocols.

Bug Fixes

• Fixed rational value JSON serialization so large and negative values encode reliably and zero denominator inputs fail cleanly instead of triggering panics.
• Improved protocol startup cleanup so failed handshake and transaction submission send attempts stop cleanly and avoid lingering shutdown errors.
• Corrected Conway and Plomin protocol version handling so version names and upper bounds stay aligned with current era support.

v0.166.1 - protocol version bounds and CBOR safety fixes

• Date: 2026-05-02
• Version: 0.166.1

Summary

This release adds explicit protocol-version range constants for era packages and fixes reliability issues in default ChainSync pipelining and deeply nested CBOR structure dumping.

New Features

• Added MinProtocolVersion* and MaxProtocolVersion* constants for the Shelley, Allegra, Mary, Alonzo, Babbage, and Conway era packages so callers can map protocol major versions to eras and validate compatibility boundaries.

Bug Fixes

• Fixed the default ChainSync pipeline so the default configuration no longer deadlocks during synchronization.
• Improved DumpCborStructure safety by using the shared nested level limit, truncating overly deep output with ..., and adding a regression test so deeply nested CBOR data no longer risks a panic.

v0.165.3 - shutdown idempotence and sanchonet peer fix

• Date: 2026-04-24
• Version: 0.165.3

Summary

This release keeps connection shutdown cleanup to a single pass so duplicate close paths no longer panic during setup failures or externally triggered closes, restores the default Sanchonet bootstrap peer so default network configuration can connect successfully again, and includes routine contributor guidance and release note maintenance.

Bug Fixes

• Fixed connection shutdown cleanup to run exactly once so duplicate shutdown paths do not panic with close of closed channel errors during setup failures or externally triggered closes.
• Restored the default Sanchonet bootstrap peer to a working host and port so default network configuration can connect successfully again.

Additional Changes

• Updated contributor guidance by refreshing AGENTS.md and adding CLAUDE.md.
• Added the prior v0.165.2 release entry to RELEASE_NOTES.md.

v0.165.2 - plutigo dependency and copyright update

• Date: 2026-04-19
• Version: 0.165.2

Summary

This release updates github.com/blinklabs-io/plutigo to v0.1.8, refreshes repository copyright headers for 2026, and refreshes RELEASE_NOTES.md to include the prior v0.165.1 release entry.

Additional Changes

• Updated github.com/blinklabs-io/plutigo to v0.1.8.
• Refreshed repository copyright headers to 2026.
• Added the prior v0.165.1 release entry to RELEASE_NOTES.md.

v0.165.1 - auxiliary data decode compatibility fix

• Date: 2026-04-18
• Version: 0.165.1

Summary

This release keeps auxiliary data decoding compatible when future extension keys appear, so metadata at key 0 still loads correctly and raw auxiliary data still round trips as expected. It also refreshes RELEASE_NOTES.md for this version.

Bug Fixes

• Improved auxiliary data decoding to ignore unknown integer keyed CBOR map entries, continue extracting metadata from key 0, and prove through regression coverage that metadata and raw auxiliary data still round trip when a future era extension key such as key 6 is present.

v0.165.0 - fee calculation and precision updates

• Date: 2026-04-17
• Version: 0.165.0

Summary

This release improves consensus threshold precision for higher active slot coefficients, hardens minimum fee calculation with overflow detection and propagated errors, updates github.com/blinklabs-io/plutigo to v0.1.7, and updates RELEASE_NOTES.md to add the prior release entry.

Bug Fixes

• Improved consensus threshold precision for higher active slot coefficients by using higher precision calculations with expanded validation so threshold results converge accurately.
• Hardened minimum fee calculation by detecting multiplication and addition overflow, returning descriptive errors, and propagating those failures through fee validation paths with test coverage.

Additional Changes

• Updated github.com/blinklabs-io/plutigo from v0.1.6 to v0.1.7.
• Refreshed RELEASE_NOTES.md to include the v0.164.0 entry.

v0.164.0 - messagesubmission versioning and handshake query

• Date: 2026-04-13
• Version: 0.164.0

Summary

This release includes improved MessageSubmission protocol version selection, handshake query support, and dependency and CI updates.

New Features

• Added versioned MessageSubmission state machines (V1 and V2) with automatic selection based on the negotiated protocol version.
• Added a connection-level handshake query mode that terminates after the query reply and exposes the returned version map to callers.

Security

• Updated golang.org/x/crypto to v0.50.0 and golang.org/x/sys to v0.43.0.

Additional Changes

• Updated github.com/fxamacker/cbor/v2 to v2.9.1.
• Updated github.com/blinklabs-io/plutigo to v0.1.6 and github.com/ethereum/go-ethereum to v1.17.2.
• Updated GitHub Actions workflows to use actions/github-script@v9.0.0 and actions/upload-artifact@v7.0.1.
• Added a nilaway CI workflow and a make nilaway target to run nil safety analysis.
• Updated RELEASE_NOTES.md to include the v0.163.5 entry.

v0.163.5 - byron offsets and validation hardening

• Date: 2026-04-02
• Version: 0.163.5

Summary

This release includes Byron block offset extraction, Byron validation hardening, and dependency and documentation updates.

New Features

• Added Byron block detection and transaction and output offset extraction.

Bug Fixes

• Fixed block ingestion to reject invalid Byron block body lengths and standardize Byron transaction validation errors.

Additional Changes

• Updated README.md to add a DeepWiki badge link.
• Updated plutigo to v0.1.0.
• Updated RELEASE_NOTES.md to include the v0.163.4 entry.

v0.163.4 - blockfetch limits and conway validation fix

• Date: 2026-03-30
• Version: 0.163.4

Summary

This release includes separate BlockFetch pending message limits for Idle and Busy states, a Conway-era transaction validation fix, and CI workflow updates.

New Features

• Added separate BlockFetch pending message limits for Idle and Busy states.

Bug Fixes

• Fixed Conway-era transaction validation to reject invalid data.

Additional Changes

• Updated configuration and tests for the BlockFetch pending message limit split.
• Added a regression test to cover the Conway-era transaction validation fix.
• Updated GitHub Actions workflows to use actions/setup-go@v6.4.0 (from v6.3.0).
• Updated RELEASE_NOTES.md to document dependency, toolchain, and documentation changes.

v0.163.3 - conway rule 7 datum witness validation

• Date: 2026-03-24
• Version: 0.163.3

Summary

This release includes an update to Conway transaction validation that permits ScriptDataHash when only datum witnesses are present and no redeemers are included.

Bug Fixes

• Fixed Conway transaction validation to accept transactions with ScriptDataHash when the witness set includes datums but no redeemers.

Additional Changes

• Added a regression test that uses a real CBOR-encoded transaction to confirm the Rule 7 acceptance criteria.

v0.163.2 - dependency and documentation updates

• Date: 2026-03-23
• Version: 0.163.2

Summary

This release includes Go toolchain and dependency updates and release notes maintenance.

Additional Changes

• Updated plutigo and gnark-crypto module versions and checksums.
• Updated the Go toolchain and selected dependencies to patched versions.
• Added the v0.163.1 entry to RELEASE_NOTES.md.

v0.163.1 - leios notification loop lifecycle fixes

• Date: 2026-03-20
• Version: 0.163.1

Summary

This release includes Leios notification loop lifecycle fixes, Conway genesis governance JSON decoding support, and documentation updates.

New Features

• Added support for decoding Conway genesis governance from JSON so developers can load and validate genesis governance configuration in tooling and integrations.

Bug Fixes

• Improved the Leios notification loop lifecycle so notifications behave consistently during synchronization and shutdown scenarios.

Additional Changes

• Updated the release notes and documentation to reflect JSON decoding behavior and related documentation changes.

v0.163.0 - Conway genesis governance decoding

• Date: 2026-03-19
• Version: 0.163.0

Summary

This release includes Conway genesis JSON decoding support for pre-configured governance representatives and governance anchor data.

New Features

• Added support for initial DReps and GovAnchor fields when decoding Conway genesis JSON so governance configuration loads at startup.

v0.162.0 - drep and credential json decoding

• Date: 2026-03-18
• Version: 0.162.0

Summary

This release includes JSON decoding support for Drep and Credential values and documentation updates.

New Features

• Added JSON unmarshalling for Drep and Credential, with tests that validate JSON-to-structure decoding across representative inputs.

Additional Changes

• Added the v0.161.1 entry to RELEASE_NOTES.md.

v0.161.1 - peer address cbor encoding and cip-0008 test coverage

• Date: 2026-03-18
• Version: 0.161.1

Summary

This release includes explicit PeerAddress CBOR encoding for peer sharing, CIP-0008 COSE/ed25519 message signing test coverage, and documentation updates.

New Features

• Added explicit CBOR encoding for PeerAddress, with tests for SharePeers and IPv6 round-trip validation.
• Added CIP-0008 COSE/ed25519 message signing and verification test coverage across expected inputs and edge cases.

Additional Changes

• Updated documentation to keep release notes in a single location.

v0.161.0 - typed query results and transaction cbor preservation

• Date: 2026-03-17
• Version: 0.161.0

Summary

This release includes typed reward and delegation query results, preserves Alonzo/Babbage/Conway transaction CBOR round-trips, and updates the Go toolchain baseline, CI automation, and dependencies.

New Features

• Added structured result types for rewards and delegations queries, including RewardInfoPoolsResult, RewardProvenanceResult, and ShelleyFilteredDelegationsAndRewardAccounts, with CBOR encoding and decoding support and client integration.

Breaking Changes

• Updated the minimum supported Go version to Go 1.25 and updated CI workflows to run tooling, tests, benchmarks, and fuzzing on Go 1.26, requiring local development and CI toolchain upgrades.

Bug Fixes

• Fixed Alonzo, Babbage, and Conway transaction round-tripping to preserve byte-for-byte transaction CBOR encoding and serialized size.

Performance

• Improved Alonzo, Babbage, and Conway transaction processing by reusing raw component bytes during CBOR reconstruction to avoid unnecessary re-encoding.

Security

• Updated golang.org/x/crypto to v0.49.0 and golang.org/x/sys to v0.42.0.

Additional Changes

• Updated CI workflows for new Go versions and updated RELEASE_NOTES.md to include the v0.160.3 entry.

v0.160.3 - cbor and transaction performance improvements

• Date: 2026-03-16
• Version: 0.160.3

Summary

This release includes CBOR and transaction processing performance improvements, plus CI and dependency maintenance.

Performance

• Improved CBOR handling by adding slice-backed references, stream-based and in-place decoding helpers, and tighter decode paths to reduce memory usage and avoid unnecessary copying.
• Improved transaction processing and RPC conversion by optimizing multi-asset value checks, witness and script handling, tx-to-RPC conversion, and EncodeLangViews encoding and unsupported-version errors.

Additional Changes

• Added the v0.160.2 entry to RELEASE_NOTES.md.
• Updated the benchmark workflow to use actions/download-artifact@v8.0.1 (from v8.0.0).
• Updated dependencies, including plutigo and go-ethereum, to keep the build aligned with upstream libraries and expected checksums.

v0.160.2 - muxer synchronization and encoding fixes

• Date: 2026-03-13
• Version: 0.160.2

Summary

This release includes muxer protocol instance synchronization, EncodeLangViews validation hardening, and documentation updates.

New Features

• Added synchronized accessors for protocol instances in the muxer and connection paths to support thread-safe protocol selection and lifecycle management.

Bug Fixes

• Fixed EncodeLangViews to reject invalid inputs earlier and behave consistently across edge cases.

Performance

• Improved allocation efficiency in EncodeLangViews by reducing allocation churn during encode and validate operations.

Additional Changes

• Updated RELEASE_NOTES.md to include the v0.160.1 entry with categorized details.

v0.160.1 - validation and security updates

• Date: 2026-03-10
• Version: 0.160.1

Summary

This release includes block and VRF validation updates, ChainSync decoding corrections, and security and CI refinements.

Breaking Changes

• Enforced Byron non-genesis header linkage by requiring PrevHeaderHash where applicable and updating consensus prev-hash validation tests.
• Updated VRF input helpers to return error instead of panicking, and updated callers, tests, and benchmarks to propagate failures.

Bug Fixes

• Fixed an execution-unit overflow edge case and added regression tests for Alonzo, Babbage, and Conway UTxO ExUnits validation.
• Fixed ChainSync unmarshalling to reject CBOR tag payloads that are not []byte, with tests covering invalid types.

Performance

• Improved allocation efficiency by preallocating KeyValuePairs slices based on input sizes in two internal helpers.

Security

• Improved SumXKesSig.Verify to use constant-time comparison for public key equality.
• Updated the network magic mismatch refusal message to avoid exposing implementation details, and added a regression test.

Additional Changes

• Updated the benchmark CI workflow to use actions/download-artifact@v8.0.0 (from v4.3.0).
• Updated RELEASE_NOTES.md to include the v0.160.0 entry.

v0.160.0 - protocol flow control and validation fixes

• Date: 2026-03-03
• Version: 0.160.0

Summary

This release includes network protocol flow control updates, consensus validation corrections, and CI and documentation refinements.

New Features

• Added CI workflows to run benchmarking and profiling, including allocation-regression tests for core validation paths, comment-triggered benchmark runs with an authorization gate, and automated posting of benchmark results to pull requests.
• Added GitHub Actions workflows that trigger on issue closure to log issue metadata and update the project item Closed Date field.

Breaking Changes

• Updated network protocol flow control to apply backpressure instead of disconnecting by increasing the max pending message bytes for NtN, removing byte limits from NtC ChainSync, and modifying the protocol read loop when pending bytes or queues fill.

Bug Fixes

• Fixed JSON marshaling for LazyValue when underlying CBOR is missing or empty and added test coverage.
• Fixed nonce and header validation to follow era-specific rules by making VRF input and nonce handling era-specific, switching KES verification to use stored header-body CBOR, tightening validation logic, and expanding tests.
• Fixed rolling nonce derivation to hash prevBlockNonce concatenated with raw VRF output bytes and refreshed related tests and comments.
• Fixed connection shutdown to treat normal protocol completion as graceful so stop paths avoid spurious errors and avoid sending Done or ClientDone when protocols are already finished.
• Fixed transaction fee sizing and era-specific semantics by centralizing fee size calculation via TxSizeForFee, correcting datum-hash nil semantics, normalizing Conway redeemer handling, eagerly caching CBOR for Babbage transactions, and adding a Conway Plutus V3 reproduction test using plutigo v0.0.26.

Additional Changes

• Updated RELEASE_NOTES.md by backfilling entries for versions 0.128.0 through 0.159.2, including detailed notes for 0.140.0 through 0.159.1 and a dedicated entry for 0.159.2.
• Updated release note language for clearer scanning while preserving technical meaning.
• Updated GitHub Actions dependencies to actions/setup-go v6.3.0 (from v6.2.0) and actions/upload-artifact v7.0.0.

v0.159.2 - transaction validation updates

• Date: 2026-02-27
• Version: 0.159.2

Summary

This release includes Conway Plutus transaction validation updates, strict CBOR metadata decoding, and developer documentation refinements.

Breaking Changes

• Updated Conway Plutus transaction validation to require ScriptDataHash only when redeemers or witness datums are present (script references are treated as inert) and to return a typed input-resolution error when a UTxO lookup fails.
• Updated callers to omit ScriptDataHash unless a transaction includes Plutus redeemers or witness datums.

Bug Fixes

• Fixed metadata decoding for generic CBOR maps to fail fast on any key or value decode error by using *cbor.Value map keys.

Additional Changes

• Updated AGENTS.md to clarify delegation behavior, document TransactionBuilder and MockTransaction usage, and expand validation and review guidelines.

v0.159.1 - transaction handling and CBOR conformance

• Date: 2026-02-26
• Version: 0.159.1

Summary

This release includes updates to transaction preparation and CBOR serialization conformance.

New Features

• Updated transaction preparation to export input sorting for redeemer mapping and apply consistent datum handling across validation paths.

Bug Fixes

• Fixed certificate amount CBOR encoding and script context serialization in test vectors to match expected on-chain representation.

v0.159.0 - asynchronous Leios notifications

• Date: 2026-02-25
• Version: 0.159.0

Summary

This release adds asynchronous Leios notifications so applications can receive updates without blocking other work.

New Features

• Added asynchronous Leios notifications with a callback-driven loop, configurable pipeline depth, and clean shutdown support.

Breaking Changes

• Replaced the blocking request-next flow with a callback-based notification model.

v0.158.4 - ledger validation and protocol pipelining

• Date: 2026-02-25
• Version: 0.158.4

Summary

This release expands ledger validation safety checks and improves protocol pipelining behavior.

New Features

• Added overflow-safe execution unit accumulation, a no-duplicate-inputs UTxO rule across all eras, and centralized withdrawal validation with an IsValid short-circuit.

Bug Fixes

• Fixed an issue where protocol pipelining state transitions could be applied incorrectly, preventing stalls and out-of-order blocks during pipelined sync.

Additional Changes

• Updated AGENTS.md to demonstrate creating mock ledgers using ouroboros-mock ledger builders.
• Updated filippo.io/edwards25519 from v1.1.1 to v1.2.0.

v0.158.3 - transaction JSON serialization

• Date: 2026-02-22
• Version: 0.158.3

Summary

This release stabilizes JSON serialization for transactions and script-related types across all eras so output is deterministic, human-readable, and round-trippable.

Bug Fixes

• Fixed redeemer, datum, address, hash, and governance type JSON encoding to produce deterministic output with proper text marshaling and CIP-129 validation.
• Fixed transaction JSON output for Byron through Conway with stable field ordering.

v0.158.2 - per-connection protocol state

• Date: 2026-02-19
• Version: 0.158.2

Summary

This release prevents shared protocol state mutation on servers so each connection gets its own isolated state.

New Features

• Added configurable idle timeout for ChainSync per connection.

Bug Fixes

• Fixed protocol servers to use per-connection state maps, preventing shared state mutations across connections.

Additional Changes

• Updated filippo.io/edwards25519 and plutigo dependencies.

v0.158.1 - spec-aligned protocol timeouts

• Date: 2026-02-18
• Version: 0.158.1

Summary

This release splits ChainSync and Handshake into separate Node-to-Node and Node-to-Client state maps so timeouts align with the Ouroboros network specification.

Breaking Changes

• ChainSync and Handshake now use separate NtN/NtC state maps, defaulting to NtC unless explicitly configured for NtN.

Bug Fixes

• Aligned ChainSync and TxSubmission timeouts with the Ouroboros network specification to prevent premature disconnects.

v0.158.0 - protocol hardening and governance queries

• Date: 2026-02-17
• Version: 0.158.0

Summary

This release hardens protocol and cryptographic handling, adds Conway governance queries for ratification state and committee members, and caps the protocol read buffer at 16MB to prevent unbounded memory growth.

New Features

• Added ratification state and committee member state queries for Conway-era governance.

Bug Fixes

• Tightened VRF verification to reject non-canonical scalars and zero sensitive buffers after use.
• Fixed muxer diffusion mode race condition and nil committee decoding in governance queries.
• Required issuer verification key for operational certificate validation.
• Fixed CBOR block encoding to emit empty arrays instead of null for nil list fields.
• Capped protocol read buffer at 16MB to prevent memory exhaustion from oversized messages.

Additional Changes

• Updated golang.org/x/crypto and plutigo dependencies.

v0.157.0 - security hardening

• Date: 2026-02-15
• Version: 0.157.0

Summary

This release hardens the muxer against denial-of-service attacks, adds a strict CBOR decoder for untrusted inputs, and corrects the rolling nonce calculation to match the Ouroboros Praos specification.

New Features

• Added DRep stake distribution query for Conway era.

Bug Fixes

• Hardened the muxer against slowloris-style attacks by enforcing read deadlines and making error propagation non-blocking.
• Added a strict CBOR decoder with tighter limits for network-facing inputs.
• Corrected the rolling nonce calculation to use XOR per the Ouroboros Praos specification.
• Fixed Conway redeemer iteration for legacy-mode transactions.

v0.156.0 - ChainSync state isolation and governance queries

• Date: 2026-02-14
• Version: 0.156.0

Summary

This release isolates ChainSync client and server state so pipelining on one side cannot interfere with the other, and adds Conway governance queries for vote delegatees and proposals.

New Features

• Added filtered vote delegatees and governance proposals queries for Conway era.

Bug Fixes

• Isolated ChainSync client and server state to prevent pipelining interference.
• Fixed a muxer deadlock in protocol unregistration.

v0.155.0 - CBOR improvements and governance state

• Date: 2026-02-12
• Version: 0.155.0

Summary

This release adds DRep state and proposals queries, raises CBOR decode limits for mainnet-scale data, and refactors constructor handling for safer encoding.

New Features

• Added DRep state and governance proposals queries for Conway era.

Bug Fixes

• Raised CBOR decoder map limits to handle large mainnet stake distribution snapshots.
• Added bounds checking to prevent panics on empty or malformed CBOR input.
• Updated Leios protocol message shapes to align with the latest CIP-0164 specification.

Additional Changes

• Refactored CBOR constructor handling for safer, byte-accurate encoding and decoding.
• Added architecture documentation, Go 1.26.x CI support, and memory profiling benchmarks.

v0.154.0 - block processing pipeline

• Date: 2026-02-10
• Version: 0.154.0

Summary

This release introduces a concurrent block processing pipeline that parallelizes decode and validate stages while applying blocks in slot order, and caches CBOR encoder/decoder modes for faster serialization.

New Features

• Added a concurrent block processing pipeline with configurable workers, backpressure, prefetch, and safe rollback draining, wired into ChainSync and BlockFetch.

Performance

• Cached CBOR encoder/decoder modes with thread-safe lazy initialization, reducing allocations in hot paths.

Additional Changes

• Updated plutigo dependency.

v0.153.1 - performance optimizations and CPRAOS

• Date: 2026-02-06
• Version: 0.153.1

Summary

This release delivers broad performance optimizations across VRF, KES, consensus, and ledger paths, switches leader election to CPRAOS, and enforces VRF key uniqueness starting with protocol version 11.

Bug Fixes

• Switched consensus to CPRAOS leader election to match the current Cardano protocol.
• Enforced VRF key uniqueness across pools starting with protocol version 11.
• Fixed genesis config to accept alternate key names used by different Cardano node versions.

Performance

• Reduced allocations across VRF, KES, consensus, and ledger hot paths by switching to native scalar operations, stack-allocated buffers, and pre-allocated slices.

Additional Changes

• Added comprehensive VRF and KES benchmarks.

v0.153.0 - protocol version 11 and conformance testing

• Date: 2026-02-05
• Version: 0.153.0

Summary

This release adds protocol version 11 (VanRossem) support, migrates conformance tests to the ouroboros-mock framework, and implements the member rewards query.

New Features

• Added protocol version 11 support with VRF key uniqueness, CC voting restrictions, and Plutus V1/V2 reference input handling.
• Added member rewards query for per-stake/per-pool reward lookups.

Bug Fixes

• Fixed CC voting restriction validation to properly reject non-Conway protocol parameters.

Additional Changes

• Migrated conformance tests to the ouroboros-mock framework, removing ~3k lines of bespoke test code.
• Added unit tests for Leios protocols, CBOR streams, muxer lifecycle, and CIP-0019 addresses.

v0.152.2 - UTxO overhead constant fix

• Date: 2026-02-02
• Version: 0.152.2

Summary

This release corrects the minimum coin calculation to include the 160-byte UTxO overhead per CIP-0055.

Bug Fixes

• Fixed minimum coin calculation to include the CIP-0055 160-byte UTxO overhead constant for Babbage and Conway.

v0.152.1 - CBOR offset fixes

• Date: 2026-02-01
• Version: 0.152.1

Summary

This release fixes CBOR offset calculations for indefinite-length arrays and adds per-protocol documentation.

Bug Fixes

• Fixed CBOR offset calculations for indefinite-length arrays used in transaction bodies, witnesses, and outputs.

Additional Changes

• Added per-protocol documentation for all Ouroboros mini-protocols with state machines, timeouts, and usage examples.

v0.152.0 - CBOR byte offsets and Byron consensus

• Date: 2026-02-01
• Version: 0.152.0

Summary

This release adds single-pass CBOR byte offset extraction so callers can locate individual transaction components within a block, implements initial Byron consensus validation, and fixes several Plutus script context issues.

New Features

• Added single-pass CBOR byte offset extraction for per-transaction components within blocks.
• Added Byron OBFT consensus validation covering protocol magic, slot leader rotation, signature verification, and body hash checks.

Bug Fixes

• Fixed Plutus script context encoding for V2 transactions and mint value handling.
• Fixed Plutus evaluation to return consumed budget even on script failure.
• Deduplicated datum entries in the Plutus script context.

Additional Changes

• Standardized test mocks on ouroboros-mock/ledger across all tests.
• Added package-level documentation and developer guides.

v0.151.2 - Plutus mint encoding fix

• Date: 2026-01-28
• Version: 0.151.2

Summary

This release fixes Plutus data conversion for mint values so V1/V2 script contexts match the expected on-chain representation.

Bug Fixes

• Fixed mint-to-Plutus-data conversion to match expected CBOR encoding and avoid wrapping in a zero-ADA value.

Additional Changes

• Updated CI action dependencies.

v0.151.1 - Plutus V2 cost model fix

• Date: 2026-01-25
• Version: 0.151.1

Summary

This release fixes Plutus V2 cost model selection in Conway and adds a datum list type that preserves original CBOR encoding.

Bug Fixes

• Fixed Conway to select the correct cost model for Plutus V2 scripts.
• Fixed validity interval logic for transaction TTL checks.

New Features

• Added a datum list type that preserves original CBOR encoding for exact script data hash computation.

v0.151.0 - transaction errors and fuzz testing

• Date: 2026-01-25
• Version: 0.151.0

Summary

This release adds era-aware transaction error decoding for Babbage and Conway, fixes cost model merging, and introduces fuzz testing across the codebase.

New Features

• Added era-aware transaction error decoding with full Babbage and Conway support.

Bug Fixes

• Fixed cost model merging to properly combine incoming models with existing protocol parameters instead of overwriting them.

Additional Changes

• Added fuzz targets across CBOR, ledger, KES, and VRF with nightly CI and seeded corpora.
• Updated plutigo dependency.

v0.150.0 - governance queries and protocol hardening

• Date: 2026-01-20
• Version: 0.150.0

Summary

This release adds a full suite of Conway-era governance state queries, provides cost models for Plutus script evaluation, and hardens protocol client lifecycles so they can be safely restarted.

New Features

• Added Conway-era governance queries: constitution, gov state, DRep state/distribution, committee members, vote delegatees, and SPO distribution.
• Added cost model support for Plutus script evaluation under Conway.

Bug Fixes

• Fixed genesis cost model decoding to support both list and map JSON formats.
• Made blockfetch and txsubmission clients idempotent and safely restartable.
• Fixed chainsync pipeline defaults to prevent sync stalls from zero-value configuration.
• Fixed a muxer data race that could cause shutdown panics.
• Added bounds checking to prevent panics on malformed address, CBOR rational, and list inputs.

Additional Changes

• Updated plutigo and golang.org/x/crypto dependencies.

v0.149.0 - VRF, KES, and consensus packages

• Date: 2026-01-16
• Version: 0.149.0

Summary

This release introduces standalone pure-Go packages for VRF, KES, and consensus so these cryptographic primitives can be used independently of the ledger, and adds operational certificate verification.

New Features

• Added pure-Go VRF, KES, and consensus packages with conformance tests against official test vectors.
• Added operational certificate verification and creation.

Breaking Changes

• VRF and KES verification functions moved from ledger to dedicated vrf and kes packages.

v0.148.0 - script data hash validation and conformance tests

• Date: 2026-01-13
• Version: 0.148.0

Summary

This release adds script data hash validation to catch malformed reference scripts and invalid redeemers, implements stake snapshot and pool state queries, and enables ChainSync client reuse on the same connection.

New Features

• Added script data hash validation with malformed reference script detection and redeemer bounds checking.
• Added stake snapshot and pool state queries with detailed per-pool data.
• Enabled ChainSync client reuse on the same connection without reconnecting.

Bug Fixes

• Fixed block body hash calculation to include invalid transaction indices.

Additional Changes

• Added conformance tests using Amaru test vectors.

v0.147.0 - validation overhaul and Plutus script contexts

• Date: 2026-01-11
• Version: 0.147.0

Summary

This release delivers a major validation overhaul reaching 302 of 314 conformance tests, adds PlutusV1 and V2 script context building, and switches monetary amounts to arbitrary precision to prevent overflow.

New Features

• Added PlutusV1 and V2 script context building.
• Added governance state and CIP-0005 bech32 string representations.
• Added stake pool parameter queries.

Breaking Changes

• Switched monetary amounts and multi-asset outputs to arbitrary-precision integers.

Bug Fixes

• Overhauled validation across delegation, withdrawals, native scripts, script data hashes, and governance with proper error types.
• Fixed numerous Plutus script context, Conway proposal, multi-asset conservation, and protocol race condition issues.

Additional Changes

• Added CIP compliance tests and removed legacy binaries.

v0.146.0 - signature validation and CIP-0137

• Date: 2026-01-03
• Version: 0.146.0

Summary

This release adds full transaction signature validation, implements the CIP-0137 distributed message queue protocol, and fixes Byron witness validation so bootstrap addresses are verified correctly.

New Features

• Added transaction signature validation, CIP-0137 distributed message queue support, TX auxiliary data decoding across all eras, and handshake query reply handling.
• Added witness validation rules, metadata validation, and collateral/cost model checks.

Bug Fixes

• Fixed Byron witness validation with correct address root computation.
• Fixed numerous metadata, script data hash, cost model, and CBOR handling issues across eras.
• Fixed chainsync pipeline deadlock and muxer shutdown race condition.

Additional Changes

• Added CIP conformance tests and centralized validation error handling.
• Updated Leios implementation per CIP-0164.

v0.145.0 - structured validation errors

• Date: 2025-12-13
• Version: 0.145.0

Summary

This release introduces structured validation errors so callers can programmatically inspect failure reasons, and adds pool distribution queries with CIP-129 voter string representations.

New Features

• Added typed validation errors with categories and contextual details like era, slot, and block number.
• Added pool distribution queries and CIP-129 bech32 voter identifiers.

Bug Fixes

• Included era context in block verification errors for easier troubleshooting.

v0.144.0 - stake pool validation

• Date: 2025-12-09
• Version: 0.144.0

Summary

This release adds stake pool validation to block verification so blocks are checked against registered pool data and VRF keys.

New Features

• Added stake pool validation to block verification across Shelley through Conway with opt-out support.
• Centralized header field extraction across eras.

Bug Fixes

• Fixed metadata handling to use raw bytes.

v0.143.0 - transaction validation and KES verification

• Date: 2025-12-05
• Version: 0.143.0

Summary

This release wires transaction validation into block verification, extends KES verification to all post-Shelley eras, and adds public network roots for mainnet and testnet discovery.

New Features

• Added transaction validation to block verification with era-specific UTxO rules and configurable skip options.
• Added block body hash validation with opt-out support.
• Added public network roots for mainnet and testnet.

Bug Fixes

• Extended KES verification to all Shelley-descendant eras instead of Babbage only.
• Fixed a panic on Byron Epoch Boundary Blocks and a race condition in concurrent verification.
• Fixed value conservation to account for treasury withdrawals.

Additional Changes

• Added muxer unit tests.

v0.142.0 - metadata refactor and output pointer fixes

• Date: 2025-12-01
• Version: 0.142.0

Summary

This release fixes output pointer aliasing that caused all items to reference the same value, prevents transaction body mutation during fee calculation, and refactors metadata for polymorphic era support.

Bug Fixes

• Fixed output and reference input accessors to return unique pointers.
• Fixed fee calculation to operate on a copy instead of mutating the original transaction body.
• Added custom NativeScript CBOR marshaler using stored raw bytes.

Additional Changes

• Refactored metadata for polymorphic auxiliary data across all eras.

v0.141.0 - TX metadata, rewards, and deterministic CBOR

• Date: 2025-11-29
• Version: 0.141.0

Summary

This release adds proper transaction metadata encoding, deterministic CBOR for multi-asset values, initial rewards calculation formulas, and Leios endorser block bodies.

New Features

• Added proper transaction metadata type supporting all CDDL datum kinds.
• Added CIP-0005 bech32 hash representations and deterministic multi-asset CBOR encoding.
• Added Leios endorser block body support and initial rewards calculation formulas.

Bug Fixes

• Fixed InvalidTransactions CBOR encoding and metadata null handling.
• Fixed protocol state timeout activation ordering.

Additional Changes

• Updated CI to Go 1.25.x and updated benchmark infrastructure.

v0.140.0 - Apex Fusion networks and certificate validation

• Date: 2025-11-18
• Version: 0.140.0

Summary

This release adds Apex Fusion Prime network support and tightens certificate deposit validation per CIP-0094.

New Features

• Added Apex Fusion Prime Mainnet and Testnet networks with bootstrap peers.

Bug Fixes

• Fixed Conway certificate validation to use amount-based checks per CIP-0094.
• Fixed Leios endorser block and certificate shapes.
• Fixed certificate consistency and collateral error CBOR encoding.

Performance

• Pre-allocated transaction input/output slices for faster processing.
• Increased default protocol queue sizes for better throughput.

v0.139.0 - protocol limits and timeouts

• Date: 2025-11-10
• Version: 0.139.0

Summary

This release adds Ouroboros Network Specification compliance with protocol state timeouts, message byte limits, and pipeline limits so connections are properly bounded and cleaned up.

New Features

• Added protocol state timeouts for all 11 mini-protocols to prevent resource leaks.
• Added per-protocol message byte limits and pipeline/queue limits with connection teardown on violation.
• Added Leios protocol parameters.

Bug Fixes

• Fixed zero-value hash encoding to use proper zero-filled bytestrings instead of CBOR null.

Additional Changes

• Updated for utxorpc spec 0.18.1 compatibility.

v0.138.0 - CBOR round-trip fidelity

• Date: 2025-11-05
• Version: 0.138.0

Summary

This release adds block-level CBOR marshal functions for multiple eras so blocks can be serialized with byte-for-byte fidelity, and tightens protocol parameter validation.

New Features

• Added block CBOR marshaling with round-trip fidelity for Mary, Alonzo, and Babbage eras.
• Added minimum pool cost to protocol parameters.

Bug Fixes

• Fixed Byron transaction payload encoding for proper CBOR round-trips.
• Tightened Shelley rational parameter validation to reject out-of-range values.
• Fixed error messages to use the correct era name instead of a hardcoded default.

v0.137.1 - memory optimization

• Date: 2025-10-31
• Version: 0.137.1

Summary

This release optimizes memory layout and allocation patterns, and implements the proposed protocol parameter updates result type.

Bug Fixes

• Implemented proposed protocol parameter updates as a typed result instead of untyped interface.
• Fixed a nil guard for debug logging when ChainSync is not active.

Performance

• Optimized struct field alignment and allocation patterns across CBOR and command packages.

v0.137.0 - LeiosFetch protocol

• Date: 2025-10-24
• Version: 0.137.0

Summary

This release implements the LeiosFetch protocol (CIP-0164) for fetching blocks, transactions, and votes, and adds raw script byte access to the Script interface.

New Features

• Added LeiosFetch protocol with client/server endpoints for blocks, transactions, votes, and block ranges.
• Added raw script byte access to the Script interface so callers can get underlying bytes without type casting.

v0.136.0 - Leios ledger primitives

• Date: 2025-10-13
• Version: 0.136.0

Summary

This release introduces initial Leios protocol support with ledger primitives, the LeiosNotify protocol, genesis structures, and a Conway transaction CBOR round-trip test.

New Features

• Added LeiosNotify protocol (CIP-0164), Leios ledger primitives, genesis structures, and hash functions.

Bug Fixes

• Fixed transaction identity handling for Leios endorser blocks and Conway parameter pre-allocation.

Additional Changes

• Added Conway transaction CBOR round-trip test.

v0.135.2 - nil safety enforcement

• Date: 2025-09-18
• Version: 0.135.2

Summary

This release enforces nilaway static analysis in CI and fixes nil pointer dereference issues found during analysis.

Bug Fixes

• Fixed Byron genesis to accept alternate seed formats and resolved nil pointer issues across the codebase.

v0.135.1 - ScriptPurpose refactor

• Date: 2025-09-13
• Version: 0.135.1

Summary

This release splits ScriptPurpose into separate purpose and info types for clearer separation of concerns, and adds nilaway static analysis to CI.

Breaking Changes

• Split ScriptPurpose into ScriptPurpose and ScriptInfo.

Bug Fixes

• Fixed a nil panic when redeemers are absent.

v0.135.0 - TX output string representation

• Date: 2025-09-11
• Version: 0.135.0

Summary

This release adds human-readable string representations for transaction outputs so validation errors are easier to understand.

New Features

• Added string representations for transaction outputs across all eras.

Bug Fixes

• Added PlutusData conversion for pre-Alonzo transaction outputs.

v0.134.2 - dependency update

• Date: 2025-09-04
• Version: 0.134.2

Summary

Dependency update release.

Additional Changes

• Updated plutigo to v0.0.11.

v0.134.1 - datum CBOR preservation

• Date: 2025-09-03
• Version: 0.134.1

Summary

This release preserves original datum CBOR bytes on decode so re-encoding does not alter the on-chain representation.

Bug Fixes

• Fixed datum decoding to retain original CBOR bytes.

v0.134.0 - Plutus script context expansion

• Date: 2025-09-03
• Version: 0.134.0

Summary

This release expands the Plutus script context to cover certificates, stake withdrawals, voting, and proposing so smart contracts can access full transaction context during validation.

New Features

• Added certificate, withdrawal, voting, and proposing support in the Plutus script context.
• Added pool deposit collection when a pool is retired and re-registered in the same transaction.
• Added slot-to-time queries to the ledger state interface.

Bug Fixes

• Fixed address PlutusData representations for stake-only and pointer addresses.

v0.133.0 - PlutusV3 script evaluation

• Date: 2025-08-26
• Version: 0.133.0

Summary

This release adds PlutusV3 script evaluation support and switches to typed script types in witness sets for better type safety.

New Features

• Added PlutusV3 script evaluation with full script context support including datum options, required signers, and multi-policy minting.

Breaking Changes

• Switched execution unit fields to signed integers to represent budget overruns.
• Replaced raw byte slices with typed script types in transaction witness sets.

Bug Fixes

• Fixed CBOR marshaling for UTxO, address PlutusData, and script references.

v0.132.0 - initial Plutus script context

• Date: 2025-08-19
• Version: 0.132.0

Summary

This release introduces initial Plutus script context support for building V3 contexts from transactions and decodes datums as typed PlutusData.

New Features

• Added initial Plutus V3 script context building from transactions.
• Added script hash generation helper.

Breaking Changes

• Datums are now decoded as typed PlutusData instead of raw CBOR.
• Removed the unused DetermineBlockData function.

Bug Fixes

• Fixed native script CBOR unmarshal to retain original data.

v0.131.0 - UTxO whole query and genesis pools

• Date: 2025-08-12
• Version: 0.131.0

Summary

This release adds a query for complete UTxO sets and creates genesis pools from Shelley genesis configuration.

New Features

• Added UTxO whole result query with JSON output support.
• Added genesis pool creation from Shelley genesis with pool lookup by ID.

Additional Changes

• Consolidated UTxO result types and CBOR debug utilities.

v0.130.1 - redeemer iteration improvements

• Date: 2025-08-01
• Version: 0.130.1

Summary

This release makes redeemers easier to iterate and consolidates genesis rational types.

Additional Changes

• Improved redeemer iteration with shared key/value types across eras.
• Consolidated genesis rational types into a single common type.

v0.130.0 - PlutusData for governance types

• Date: 2025-07-31
• Version: 0.130.0

Summary

This release adds PlutusData conversion functions for governance proposals, votes, transaction outputs, and multi-asset values so they can be passed to Plutus scripts.

New Features

• Added PlutusData conversion for governance proposals, votes, transaction outputs, and multi-asset values.

Bug Fixes

• Fixed address PlutusData structure.

Additional Changes

• Added utxorpc block function tests across all eras.

v0.129.0 - PlutusData helpers

• Date: 2025-07-17
• Version: 0.129.0

Summary

This release adds PlutusData conversion helpers for core types and block CBOR round-trip tests across eras.

New Features

• Added PlutusData conversion for hashes, addresses, and transaction inputs.

Additional Changes

• Added block CBOR round-trip tests for Shelley, Allegra, and Conway.
• Updated Go version requirement to 1.24 and bumped CBOR, crypto, and utxorpc dependencies.

v0.128.2 - Conway CBOR marshaling fixes

• Date: 2025-07-12
• Version: 0.128.2

Summary

This release fixes several Conway CBOR marshaling issues that could produce incorrect serialization for redeemers, witness sets, and generic values.

Bug Fixes

• Fixed Conway redeemer and witness set CBOR marshaling, value type marshaling, and TxSubmission ack count reset on protocol restart.
• Fixed redeemers to preserve legacy ordering when present in on-chain data.

v0.128.1 - nil pparam update guard

• Date: 2025-07-11
• Version: 0.128.1

Summary

This release fixes a crash when processing transactions with no protocol parameter updates.

Bug Fixes

• Added nil check for transaction protocol parameter updates.

v0.128.0 - TxSubmission lifecycle and CBOR set tags

• Date: 2025-07-10
• Version: 0.128.0

Summary

This release adds TxSubmission client completion support so applications can cleanly signal they are done submitting transactions, and introduces CBOR set tags for spec-compliant transaction body encoding.

New Features

• Added client Done and MsgDone callback support for TxSubmission, and clean server shutdown.

Bug Fixes

• Fixed Byron address and TX input CBOR encoding, and excluded empty datum hashes from Alonzo outputs.

Additional Changes

• Added CBOR set tag support for transaction body fields and block test data for all eras.