Prove Your AI Was Tested

Tamper-evident, cryptographically signed AI safety attestations. Verifiable measurement for the EU AI Act era. Every check timestamped, every result traceable.

Signed Verification EU AI Act Focus MCP Tooling Care Membrane Tested

Or verify any attestation instantly — paste a signed attestation, get VALID/INVALID.

How ProofOf.ai Works

01

Care Membrane Audit

An adversarial safety harness probes your AI against manipulation, coercion, and ethical violations. Every probe result timestamped and recorded.

02

Signed Attestations

Results are hashed, Ed25519-signed, and chained into an append-only ledger. Tamper-evident evidence of exactly what was measured at a specific point in time — passes and failures alike.

03

Multi-Framework Crosswalk

One audit maps across the major regulatory frameworks — EU AI Act, NIST RMF, ISO 42001, OECD, UNESCO — crosswalked through the CSOAI charter.

04

Continuous Monitoring

MCP tools run compliance checks on every AI interaction. Results feed the signed measurement ledger, building longitudinal evidence over time.

05

Self-Audit Capability

Your AI agents can verify their own compliance via MCP. pip install ai-self-audit-mcp and your agents audit themselves.

06

Audit Trail

Complete chain of custody for every governance decision. Who checked what, when, and what the result was. Ready for regulatory inspection.

Proof of personhood — sign as you

The same signature layer protects people, not just models. Sign your real statements, videos and posts as you with a key only you control. Anyone can then verify them keylessly — and a deepfake or impersonation, which cannot produce your signature, fails verification.

A

Sign as you

Your statement is canonicalised and Ed25519-signed. The signed attestation carries the message, the signature, and the public key anyone can check it against.

B

A deepfake fails

Impersonated content carries no valid signature from your key. Pasted into the verifier, it comes back INVALID — measured, not vibes.

Attestation Packs

AI Attestation

£299/mo
  • Care membrane adversarial audit
  • Signed ledger verification
  • AI self-audit tools
  • EU AI Act compliance check
  • Compliance MCP tooling included
  • Monthly compliance report
Start Attestation

Trust Pack

£199/mo
  • Signed ledger verification
  • Identity trust scoring
  • Content registry
  • Watermark authenticity
  • Trust & registry MCP tooling
  • API access
Get Trust Pack

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