Release Notes - v0.187.0

v0.187.0 (July 6, 2026)

Title: Strengthen reference script limits and Leios block handling

Date: July 6, 2026

Version: v0.187.0

This release tightens reference script validation and aligns Leios certificate handling with the expected prototype-2026w27 wire format.

💪 Improvements

• Added reference script size enforcement: gOuroboros now rejects transactions and blocks that exceed the allowed reference-script size limits, and it returns distinct errors for per-transaction and per-block overages.

• Fixed Leios certificate encoding for prototype-2026w27: blocks carrying a Leios certificate now encode the expected empty Dijkstra transaction slots, and the decoder now rejects malformed or placeholder certificate payloads to keep Leios data consistent on the wire.

• Updated Leios header accessors: callers that used DijkstraBlockHeader.LeiosEndorserBlockRef must migrate to LeiosCertified() and LeiosAnnouncement(), with LeiosAnnouncement() possibly absent.

🙏 Thank You

Thank you for following gOuroboros releases.

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