Carl Sentance (born 28 June 1961 in Loughborough) is an English rock singer who was the vocalist for Nazareth between 2015 and 2025. He has also sung for Persian Risk, Geezer Butler, Krokus and Don Ai
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 0xac6b839b9fe5f4dbc6b10249f7d4e9dcc53cb76ce0470e301560cd108e50951b. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b855a12-8cf3-460c-8e2c-eac0f6155f06.json and https://artists.proofprofile.net/proofs/artist/0b855a12-8cf3-460c-8e2c-eac0f6155f06.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.