thumb|A mention of "maranatha" in the Southwick Codex, a medieval text Maranatha (Aramaic: ) is an Aramaic phrase which occurs once in the New Testament (). It also appears in Didache 10:14. It is tra
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5d5dd2268e79ca4f11af17a2dc70c225da7c2bd4045f0599193a26fd574a3d. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2040e2cc-85e8-4dba-b549-82340c9674aa.json and https://artists.proofprofile.net/proofs/artist/2040e2cc-85e8-4dba-b549-82340c9674aa.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.