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 0x61874b1ae2ec6033ed4c881634338919a94124dc1e545c7c001d351c09a0a818. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbf21dad-dcea-404c-9318-2ce7a4dabec1.json and https://artists.proofprofile.net/proofs/artist/cbf21dad-dcea-404c-9318-2ce7a4dabec1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oh Little Town of Bethlehem / Oh Holy Night