Dewi, Dai, Dafydd or David James may refer to: Performers David James (actor, born 1839) (1839–1893), English stage comic and a founder of London's Vaudeville Theatre David James (actor, born 1967) (
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 0xbc9d669f27e4ba3aa6df9187f7715433803fbe05f2398b12d34fd2cf8ee04917. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63b47aa7-e7bf-4b59-8e36-52d7766c5abc.json and https://artists.proofprofile.net/proofs/artist/63b47aa7-e7bf-4b59-8e36-52d7766c5abc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).