Release Notes - v0.5.1

v0.5.1 (September 3, 2026)

Title: Improve large integer serialization and decoder coverage

Date: September 3, 2026

Version: v0.5.1

This release improves how Plutigo represents very large integer values and strengthens checks for boundary cases in byte string conversion and constructor decoding.

🔧 Fixes

• Corrected large integer encoding: Plutigo now writes very large positive and negative Plutus values in the same byte format as the Plutus reference implementation, including magnitudes around 2^512 and larger. Values up to 64 bytes use a definite length, while larger magnitudes use 64 byte chunks, helping canonical transaction data pass signature and hash verification.

📦 Additional Changes

• Expanded boundary regression coverage: Plutigo now verifies that an unrepresentable 2^63 size with no value returns ErrCodeOverflow and that FLAT constructor tags retain their full 64-bit values, including bit 32, during generic and DeBruijn decoding. These checks preserve the existing runtime behavior.

🙏 Thank You

Thank you for using Plutigo.

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Docs authored by Doc Holiday