a record of certainty

Prove a record existed. Let anyone check.

SHA-256 hashes are batched into a Merkle tree and anchored in a Bitcoin OP_RETURN transaction. The certificate is plain text, verifies offline, and requires no account, on either end.

0
records anchored
0
bitcoin transactions
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latest anchor block
Timestamp a documentHash computed in your browser; the file itself is never stored./upload →CertificatesEvery issued proof, with verification and .proof download./certificates →Integration APIAuthenticated hash-only submission for CI and partner systems.POST /api/v1/timestamp →