Sir George Henry Martin (3 January 1926 – 8 March 2016) was an English record producer, arranger, composer, conductor, and musician. He was commonly referred to as the "fifth Beatle" due to his extens
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 0xf1b0c6ce5536d5c6357b414846c0dd306e4a000a98afaebf456c2895890386e8. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddf3cbbb-ad33-4094-bf3d-c05cd742e554.json and https://artists.proofprofile.net/proofs/artist/ddf3cbbb-ad33-4094-bf3d-c05cd742e554.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).