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 0x4dc79da4a96366b303b989d1f3805d27d2d98fc0b8bdba98533e33954364241a. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cc430db-a796-49ef-bc37-161c0991c116.json and https://artists.proofprofile.net/proofs/artist/4cc430db-a796-49ef-bc37-161c0991c116.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Signature Sounds 10th Anniversary Collection
A Case for Case: A Tribute to the Songs of Peter Case