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 0xa2090448198a3723836a6bd9a8387ada06c93ba8fe3d3c591692d3ecec743600. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a2f4dfe-0f6f-4012-a598-8b8521bcec90.json and https://artists.proofprofile.net/proofs/artist/2a2f4dfe-0f6f-4012-a598-8b8521bcec90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Library Catalog Music Series: Music for Insomnia