Apex PSI · Verification
Verify
Check any receipt against the artefact it describes. Every check runs in your browser. If this site ever disappears, the offline verifier below does exactly the same job with no network at all.
Look it up on the ledger
Paste a SHA-256 digest. We query the live APEX PSI ledger and show exactly what is there — or say plainly that nothing is.
1 · The receipt
Drop the .praman receipt
Or paste the receipt JSON below.
2 · The original content
Drop the original file
Streamed through SHA-256 locally. Never uploaded.
Result
Supply a receipt and the original content. Verification compares the recomputed SHA-256 against the sealed digest, then checks the Ed25519 signature over the RFC 8785 canonical form of the receipt body.
Verify without us
Article V — PSI-Non-Capture. No verification may depend on the verifier's existence. The offline verifier is a single self-contained HTML file: no network calls, no dependency on sovereign-ai.services, no account. Keep a copy. If this workspace ever stops operating, every receipt ever issued still verifies.