Yaqob or Yaʿqob may refer to: Yaqob I, legendary 2nd-century primate of the Church of the East Yaqob II, patriarch of the Church of the East from 753 to 773 Yaqob of India, metropolitan bishop of the
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131f7a7c6e319b3f96cf45ee6ac8d170b72e8be9aa29b7c1c16aac494bc56d6a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f9b9d16-68be-4263-925c-ecce2232fc76.json and https://artists.proofprofile.net/proofs/artist/2f9b9d16-68be-4263-925c-ecce2232fc76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).