Thomas Joyce may refer to Thomas of Jorz (d. 1310), English Dominican theologian and Cardinal who is often called "Thomas Joyce" Thomas Athol Joyce (1878–1942), British anthropologist Joyce Cary (18
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 0xfdf5d7c1adc2565f4567d463d057205d7a69f4f8ea0252a99ae1a4a7858f6cb6. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c289eac2-064f-40d6-99e4-0b4fe9604b39.json and https://artists.proofprofile.net/proofs/artist/c289eac2-064f-40d6-99e4-0b4fe9604b39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).