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 0xdfc154392d16180c6a6c17eb5b01dee9bf8fc5755f07d0f64e56685f4fbbb8d2. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/751c9adc-2c55-4c47-a19b-6f3258a186b9.json and https://artists.proofprofile.net/proofs/artist/751c9adc-2c55-4c47-a19b-6f3258a186b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Cry While You Sleep - Dream, Ivory Version
Take Me Down - Nourished by Time Version