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 0xfc1b720f2415b51f3297280a5a69eb42c445b1992338ea0d4e8c9f884abac3b4. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6b4d3d8-f72b-427a-84ea-67faa04d58ae.json and https://artists.proofprofile.net/proofs/artist/b6b4d3d8-f72b-427a-84ea-67faa04d58ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Next Door Neighbors (Los Vecinos de la Casa de al Lado)