1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6150de2e2a997e02b916bb039e56054e5c983a3d4725c851fb23e254612957f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93afdbd8-b1b3-44d6-b81d-bd3f00bd1f5b.json and https://artists.proofprofile.net/proofs/artist/93afdbd8-b1b3-44d6-b81d-bd3f00bd1f5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Jazz Club Session with Monty Sunshine's Jazz Band: The Allan Gilmour Tapes
A Jazz Club Session with Monty Sunshine's Jazz Band
Existentialism - Revival Jazz of the 60's Vol. 10