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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685aa93f07c53f63e8e3adceb713bb97d0f6d3d301d4b4add88bc5bcc52c684a. Chain 2 (Bitcoin): anchored in block 953911 (2026-06-16T08:03:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17e74932-39c6-418e-bdd1-50884ae4bb47.json and https://artists.proofprofile.net/proofs/artist/17e74932-39c6-418e-bdd1-50884ae4bb47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Crockabilly (22 Croatian Rockabilly Tracks)