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 0x6b5c4514a3190589fe10b9970a3ab7c382ddbcb76c75f6d4ac1d89f119091764. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d251b8ca-906e-4e3d-918a-9f93532ec3b0.json and https://artists.proofprofile.net/proofs/artist/d251b8ca-906e-4e3d-918a-9f93532ec3b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Down In The Village (Live At Ronnie Scott's Club, London, UK / 1962 / Remastered 2019)
Late Spot At Scott's (Live At Ronnie Scott's Club, London, UK / 1962 / Remastered 2019)