Every autonomous action. Cryptographically sealed. Bitcoin-anchored. Publicly verifiable in 3 seconds.
56,906+ receipts sealed. Zero chain breaks. Verify any one right now — no account required.
The Problem
Nobody can prove what they did.
Your AI fixed it. But when the auditor asks "show me what happened" — you have a log file that could have been altered.
EU AI Act Article 12 is live August 2, 2026. Mandatory cryptographic logging. €15M penalty. Your ELK stack doesn't qualify.
Datadog sees it. ServiceNow tickets it. Neither proves it.
The Solution
One receipt. Five questions. Mathematically undeniable.
Each receipt hashes to the next. The chain terminates in Bitcoin. Tamper one — the rest break.
Install the SDK. Seal a receipt. Verify anywhere.
pip install prooflink-sdk prooflink.seal( action="restart nginx", service="nginx", reason="502 error spike", verdict="VERIFIED" )
Receipt generates in real time — SHA-256 hash chain + Bitcoin OTS anchoring. Immutable in seconds.
Not incremental — category-defining leap.
— Independent Analyst, June 2026
ProofLink positioned as default compliance standard for auditors.
— External Analyst, May 2026
The Stripe for AI accountability.
— Strategic Assessment, 2026
Every high-risk AI system must have tamper-evident, cryptographic auto-logging. Traditional logs don't qualify. ELK stacks don't qualify. Datadog doesn't qualify.
| Article 12 Requirement | ProofLink |
|---|---|
| Art. 12.1 — Automatic logging | ✅ |
| Art. 12.2 — Proportionate to purpose | ✅ |
| Art. 12.3 — Enable risk monitoring | ✅ |
| Art. 12.4 — Tamper-evident storage | ✅ |
The difference between "trust us" and "verify yourself."
Try to fake a receipt. Then explain to the judge why the Bitcoin blockchain disagrees.
Sam's Club model: members pay half-price + unlock flat rates.
Membership from $499/year. $0.01/receipt (members) vs $0.02 (non-members). View full pricing →
Paste any receipt ID. Loads in 21ms. No account.
Be provable.