Clayson may refer to: Surname Alan Clayson (born 1951), singer-songwriter, music biographer, journalist, solo entertainer Billy Clayson (1897–1973), English footballer Carol Anne Clayson, American oc
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 0xcb8626e0f6c6dfaa29f9d1b65fa545e417c12d7bdf7e8201785725de35f1a78e. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/628ab562-e6e8-4fe0-8645-70a4d8f9006d.json and https://artists.proofprofile.net/proofs/artist/628ab562-e6e8-4fe0-8645-70a4d8f9006d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).