Brendon is a village and former civil parish, now in the parish of Brendon and Countisbury, in the North Devon district, in the county of Devon, England. It is close to the border with Somerset within
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef64119139b9ed59efd22dec157c7ec46cac70081e3a8b580628a636383fbe5b. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f12dba97-d7c8-40c5-93c6-7db7f2674e8d.json and https://artists.proofprofile.net/proofs/artist/f12dba97-d7c8-40c5-93c6-7db7f2674e8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).