Reference architecture for fail-open, witness-only evidence systems with independent verification and public settlement.

PDF digital signature with Belgian eid card

100% DIY Document Authenticator

A non-repudiation Trusted Document Storage in cloud implemented in python

Store data using different non-repudiation mechanisms, including a distributed ledger (blockchain).

This is a Security policy of a project called Watch Me

Logging system for upcoming enforced originality system

Execution provenance protocol for AI agents — tamper-evident, third-party verifiable behavioral records. Hash chains (SHA-256) + Ed25519 signatures + JCS (RFC 8785). Zero dependencies, 202 tests.

Toegepaste Informatie Bachelorproef 2017

A secure console-based chat system implementing PKI, RSA, Diffie-Hellman, AES-128, and SHA-256 to achieve CIANR (Confidentiality, Integrity, Authenticity, Non-Repudiation). Features self-built CA, X.509 certificate validation, encrypted messaging, and session transcripts for non-repudiation.

as2 protocol non-repudiation b2b messaging on-chain

PKGBUILDs to build SELinux enabled packages for Arch Linux

Signed receipts for agent/tool actions. PolicyGate enforces allow/deny; every decision emits a tamper-evident receipt with hashes, signatures, and optional approvals. Verify in CI, prove what happened, and make agent integrations survivable in regulated environments.

OpenExecution Provenance Specification — implements AEGIS (Agent Execution Governance and Integrity Standard) for auditable, tamper-evident AI agent behavioral records. Apache 2.0.

Enforce agent actions with policy checks and cryptographic receipts to prove compliance and enable independent verification.