Codd is a surname. Notable people with the surname include: Bernard Codd (1934–2013), English motorcycle racer Edgar F. Codd (1923–2003), British computer scientist Frederick Codd (1831–1888), Eng
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 0xe920a27e3a57a41ff84dcda992d496bf7d479f1fbe8cac0a8171d314c51582a1. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f8aa498-56ee-4b60-9407-2b9eb325d145.json and https://artists.proofprofile.net/proofs/artist/9f8aa498-56ee-4b60-9407-2b9eb325d145.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).