B Crow (lived c1850) was a Tyneside songwriter who according to the information given by John Ross in volume 10 of his The Songs of the Tyne published c1850, has the short song “The Old Burn” attribut
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 0xf9d046635977ab942666bcb116e04605dbf0a4395011a650ad238ab8ef4aed5e. Chain 2 (Bitcoin): anchored in block 953888 (2026-06-16T04:55:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d63eb3b-f4e5-4137-bb04-80629f7952ac.json and https://artists.proofprofile.net/proofs/artist/0d63eb3b-f4e5-4137-bb04-80629f7952ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).