Delroy Washington (5 November 1952 – 27 March 2020) was a Jamaican-British reggae singer best known for his releases for Virgin Records in the late 1970s. Biography Born in Westmoreland, Jamaica, Was
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 0x765ee5b8600b484caf219dc7cf2ad8d8cf2ae71f9398b69b4c4c4862d641cc89. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74f5569b-704e-4ffe-8325-83cd485d4b7e.json and https://artists.proofprofile.net/proofs/artist/74f5569b-704e-4ffe-8325-83cd485d4b7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).