Receipts· Born Between Generals, LLC
Prove this document didn’t change.
Anchor a file’s SHA-256 fingerprint to a hash-chained, Ed25519-signed ledger and get a downloadable, tamper-evident certificate. Anyone can later check a copy against it — for free, with no account.
Your file never leaves your device. We hash it in your browser and anchor only the fingerprint.
1 · Hash
Drop a file. We compute its SHA-256 in your browser. The fingerprint identifies it; the contents stay with you.
2 · Anchor + sign
The fingerprint is appended to a hash chain (@bbg/ledger) and signed with Ed25519. One changed byte breaks the match.
3 · Certificate
Download a self-contained certificate. It carries the public key, so anyone can verify without trusting us.
Free forever
Verification is free, no account, no limits.
The trust of this product is that anyone can check an anchor. That stays open. Paid tiers add bulk anchoring, managed signing keys, and retention — see pricing.
Receipts is the commercial face of @bbg/ledger, the same tamper-evident audit spine behind Atrium. It is not legal advice and not a notary service.