Clayton Hartley Matthews (24 October 1918 – 25 March 2004) was an American writer of mystery, erotic and romance novels, with more than 35 books and many short stories as Clayton Matthews. He often co
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee9b41b1d30277a27d8b7bcc8a6ab6e92d1dc344d7bb24282e1262c2bc8402f. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11bbe550-77ce-478e-8a0a-9d4d79a43489.json and https://artists.proofprofile.net/proofs/artist/11bbe550-77ce-478e-8a0a-9d4d79a43489.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).