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 0xc2f24ce22d5ae31aa56acd8053dc2d2e53c7d8f717c050c0507464549ffc48a3. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f34a644-9b5c-442c-b06d-d574c29d8736.json and https://artists.proofprofile.net/proofs/artist/2f34a644-9b5c-442c-b06d-d574c29d8736.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Kine of Music, Vol. 4 (John Valentine Presents)