David Fitzgerald Doyle (December 1, 1929 – February 26, 1997) was an American actor. He was best known for his portrayal of John Bosley on the 1970s TV series Charlie's Angels. Doyle and Jaclyn Smith
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 0x979979a717c4e8b7b3187cbfaa18939300afa59bec5f6c62a3d5ca6eb2006272. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a369d4c8-bef6-4435-a34b-2953170ccc2b.json and https://artists.proofprofile.net/proofs/artist/a369d4c8-bef6-4435-a34b-2953170ccc2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).