Allan Stephenson (15 December 1949 – 2 August 2021) was a British-born South African composer, cellist and conductor. Life Born in Wallasey, near Liverpool, he studied the cello in Manchester at the
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 0x32600d3f77ea45f0efb2b35b391e80646d1f577538b9afdd006abe34bbb842de. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84ae03bf-2da4-4da3-9336-d59f6e71424b.json and https://artists.proofprofile.net/proofs/artist/84ae03bf-2da4-4da3-9336-d59f6e71424b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stephenson: Concerto for cor anglais and string orchestra
Stephenson: Burlesque for Double Bass - Concerto for Double Bass - Concerto for Cello