keccak256
Offline verifier for TWZRD receipts: AO-Receipt V7 (earlier V5/V6 still verify) and genesis cNFT receipts. npm + PyPI.
Python SDK for Tersign, the evidence layer for the agent economy — offline verification of counter-signed receipts, hash chains, chain commitments and frozen evidence bundles. Zero dependencies, standard library only. PyPI: tersign
🌳 The simple and easy implementation of Merkle Tree
Tamper-evidence toolkit (npm verifyhash / verify-vh) + a zero-dependency EN 16931 / XRechnung / Factur-X e-invoice validator. Offline, permissionless, CI-gateable.
