Uphill is a village and former civil parish, now in the parish of Weston-super-Mare, in the North Somerset district, in the ceremonial county of Somerset, England, at the southern edge of the town, on
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 0x4085bdabd4deb9be8906a0bcd3f3c3d2678a2c041f222bbbe0766c8862c22e9b. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18916af2-d1b1-4c34-945a-18c41af9b84d.json and https://artists.proofprofile.net/proofs/artist/18916af2-d1b1-4c34-945a-18c41af9b84d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).