Release Notes - v0.212.0

v0.212.0

Title: Improve evaluation control and ledger compatibility

Version: v0.212.0

Date: 2026-10-08

This release enables cancellable Plutus evaluation, improves Musashi genesis parsing and Dijkstra validity checks, removes standalone examples, and provides an opt-in cardano-node integration test harness.

New Features

• Added context-aware Plutus evaluation for Plutus V1 through V4, allowing applications to cancel work before processing starts or during evaluation and receive context.Canceled; existing evaluation methods remain compatible.
• Introduced an opt-in cardano-node integration test harness that connects through a node socket, exercises ChainSync, decodes a block, checks the tip, and verifies stop and restart behavior.

Improvements

• Improved Musashi Shelley genesis parsing by replacing the leiosKey field with blsKey, which contains blsPubKey and blsPossessionProof. The parser now rejects malformed hexadecimal values or incorrect byte lengths and retains the decoded key for initial pool registration.
• Corrected Dijkstra validity decoding and transaction offset extraction to accept only CBOR boolean values; null, undefined, integers, and other non-boolean values now return errors instead of being interpreted as false.

Breaking Changes

• Removed standalone protocol example programs, their build and release automation, and the make build and make clean example targets. Applications that relied on those examples or targets must use library packages with their own test or build workflows.
• Updated Musashi Shelley genesis configurations to use blsKey with nested blsPubKey and blsPossessionProof instead of leiosKey; both values require valid hexadecimal strings with exact byte lengths, and the old field no longer populates the BLS key.
• Enforced CBOR booleans for Dijkstra is_valid values; null, undefined, integers, and other non-boolean values now cause transaction decoding or offset extraction errors instead of being treated as false.

Recommended Network Compatibility ⚠️

Network	Compatible
mainnet	⛔
preprod-testnet	✅
preview-testnet	✅
musashi	✅

Release: v0.212.0

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Docs authored by Doc Holiday