Arthur Greenslade (4 May 1923 – 27 November 2003) was a British conductor and arranger for films and television, as well as for a number of performers. He was most musically active in the 1960s and 1
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255fd73926eb5074c112f8105d044bef954a51f7380009835d2627e513e7d130. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b412970-3fc1-4461-93ae-5d829e64f290.json and https://artists.proofprofile.net/proofs/artist/7b412970-3fc1-4461-93ae-5d829e64f290.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).