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timestamp-authority

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NoMoreFood / OpenTimeStamp

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Self-hosted RFC 3161 and Microsoft Authenticode timestamp authority for Windows Server/IIS, with hardened PowerShell deployment, MSI packaging, RSA and ML-DSA support, plus SignTool, Microsoft Office, VBA, and Adobe Acrobat integration.

cryptography iis authenticode x509 pki digital-signature windows-server tsa tsp post-quantum-cryptography dotnet-framework trusted-timestamping rfc3161 code-signing timestamping signtool document-signing rfc5816 ml-dsa timestamp-authority
  • Updated Jul 23, 2026
  • C#

veritaschain / cpp-spec

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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.

merkle-tree rfc3161 vap open-standard privacy-by-design digital-evidence content-provenance cryptographic-proof media-authenticity veritaschain capture-verification c2pa-alternative timestamp-authority deletion-detection photo-verification vap-framework
  • Updated Jan 30, 2026
  • Python

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