prooftrail-verify

An independent, offline verifier for ProofTrail evidence packages, written in Python from the protocol specification. It shares no code with the Rust verifier pt-verify, and both must produce identical results on every published test vector.

pip install prooftrail-verify
pt-verify-py case-001.ptpkg.zip --pubkey examiner_pub.pem

It checks the package structure, manifest and certificate signatures, every file digest, exhibit digests, the custody hash chain, event signatures, warrant scope, Merkle roots, inclusion proofs, the ledger chain and timestamp coherence. Exit status: 0 passed, 1 failed, 2 malformed package or usage error. Options: --json, --exhibits-dir DIR, --ledger-checkpoint N:HASH.

It can also be used as a library:

import pt_verify
key = pt_verify.PubKey.from_pem(open("examiner_pub.pem", "rb").read())
report = pt_verify.verify_package("case-001.ptpkg.zip", [key])
print(report["result"], report["exit_code"])

Licensed under MIT or Apache-2.0.