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 0x1ac5433630e5bb9ea62c037cbbff46321ae52347950fd58215ad6154ebcf34fe. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af5578f8-dcf7-46b0-8ccc-ffc443e54e7d.json and https://artists.proofprofile.net/proofs/artist/af5578f8-dcf7-46b0-8ccc-ffc443e54e7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Go Tell It On the Mountain (Mary's Boy Child)