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 0x659fca190101a87fc02c4739d704be7e6bde81816f93e8954b01adcda3a2566f. 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/21998bab-b9d1-46ab-8fb0-1e0827c0544a.json and https://artists.proofprofile.net/proofs/artist/21998bab-b9d1-46ab-8fb0-1e0827c0544a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best Of The Solo Recordings 1990-1997