1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x4c9e12d3ac076c585df79c9713acfe51495ccacb6456173849f7b532e4c7b3de. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce629cf8-92eb-469c-a8a4-a18cd4a40d74.json and https://artists.proofprofile.net/proofs/artist/ce629cf8-92eb-469c-a8a4-a18cd4a40d74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Non! The Joy of Non-Conformity (French Strikers Approved)