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 0x75249923b60e65ce052426c4c2a028fd76edd3d896b45042d20e3a6a1adf42a9. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9d7a22f-a09b-4bb8-adf0-8e3d43a94a6d.json and https://artists.proofprofile.net/proofs/artist/b9d7a22f-a09b-4bb8-adf0-8e3d43a94a6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rich Men North of Richmond (*Almost* Clean)