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 0x91b2a945c2f45b84e8f4370cfe6776e24261792def5e7800ef884afbe523590a. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/124096a1-fefe-4006-b446-9d9e8d2bd3a4.json and https://artists.proofprofile.net/proofs/artist/124096a1-fefe-4006-b446-9d9e8d2bd3a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
FREEDOM FROM THE KNOWN (full with intro)
I Call to You, Lord (J.S. Bach BWV 639 Flip)