David Henry ChaseChase says his name was not David DeCesare at birth in this interview: https://interviews.televisionacademy.com/interviews/david-chase# (born August 22, 1945) is an American writer,
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 0x33963cd7b9849543962c6eca05ece4b930d176d083798f72d98be4bfc51d1a41. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/295a152e-5918-466f-ae25-64042bb62e47.json and https://artists.proofprofile.net/proofs/artist/295a152e-5918-466f-ae25-64042bb62e47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).