thumb|Bernard J. Taylor Bernard J. Taylor is a writer and composer known for his musicals and stage plays. His works have been produced globally and translated into German, Romanian, Polish, Hungarian
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 0xefe53f8bc88547f612fbd2fb674d343ef9c0c990511dd921c97eb1e78a9e2ab2. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53d8aba4-251f-45a1-9589-e3dc13e8bdca.json and https://artists.proofprofile.net/proofs/artist/53d8aba4-251f-45a1-9589-e3dc13e8bdca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).