A simple client library for cryptographic timestamping service implementing the protocol from RFC3161. Based on python-rfc3161 with some additional fixes.

A Python IETF Time-Stamp Protocol (TSP) (RFC 3161) client

Verifiable audit substrate for AI agents — EU AI Act Article 12 ready. Apache 2.0.

ArkForge Proof Specification — open standard for verifiable agent-to-agent execution proofs

Certifying proxy for agent-to-agent transactions — SHA-256 proof chain, Ed25519 signatures, RFC 3161 timestamps, Sigstore Rekor

RFC3161タイムスタンプ独立検証ツール | ProofMark公式

Regulator-side reference PoC for independently verifying anchored Merkle proofs of multi-entity trading logs (VCP Gold/Platinum). Includes Merkle inclusion + external anchor verification and a red/green integrity dashboard.

Cross-platform portable desktop app for applying RFC 3161 trusted timestamps to PDF files with batch processing, smart PDF repair, and privacy-focused local processing.

Open-source reference implementation and specification for cryptographically verifiable AI agent self-attestation.

Independent verifier for GetProofAnchor evidence bundles

CPP (Capture Provenance Profile) - Open specification for cryptographic proof of media capture events. Features RFC 6962 Merkle trees for deletion detection, RFC 3161 timestamping, and optional ACE (Attested Capture Extension) for zero-knowledge biometric attestation. Part of the VAP Framework.