ProofLink proves iTechSmart's own actions. ProofLinkPlus proves yours — a tamper-evident, cryptographically signed ledger for the LLM transactions inside any high-risk AI app, built for EU AI Act Article 12 automated record-keeping.
A separate product, an isolated ledger
Your AI app — the one calling OpenAI, Anthropic, or any other model — sends each LLM transaction to ProofLinkPlus, which seals it into a tamper-evident, signed record in your own tenant-isolated ledger.
Seal → Chain → Anchor → Verify
Each transaction (prompt, model, response metadata) becomes an Ed25519-signed, hash-chained receipt, anchored via OpenTimestamps so existence and order cannot be backdated — and independently verifiable by an auditor who trusts neither you nor us.
Built for high-risk AI teams
Where 'we kept some logs' is not enough and an auditor has to reconstruct exactly what the AI did — Article 12's automated, tamper-evident logging, as tooling.
Honest scope
ProofLinkPlus is record-keeping tooling — not a guarantee of full EU AI Act compliance, which also requires risk management, data governance, human oversight, and documentation. It records real capabilities only.
Live today
The ledger is live at prooflinkplus.itechsmart.dev — see it, and verify a receipt yourself.
Ed25519
signed, hash-chained receipts
OTS
OpenTimestamps anchoring
ProofLinkPlus plugs into the UAIO loop like every other product in the suite: its actions are policy-routed, twin-simulated where they touch production, and sealed with ProofLink receipts anyone can verify.
- receipt
- 76a7d0bee971496c
- action
- HUMAN-APPROVED restart_container → ok
- actor
- uaio-twin-service
- timestamp
- 2026-07-09T12:51:42Z
- chain_pos
- #98234 · prev fa288c06…
- hash
- 2d23832d…b749d
- sealed
- SHA-256 · Ed25519 · OTS→Bitcoin
Free to start. A receipt for everything it does. Your auditors will think you're showing off.
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