Alex Clark may refer to: Alex Clark (baseball), American baseball player Alex Clark (journalist), British literary journalist Alex Clark (politician) (1916–1991), American politician Alex Clark (
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 0x390ae6475da9e562432bf6b9571f5fa22bbdc3e0b5616aadd2706a12248b0840. Chain 2 (Bitcoin): anchored in block 953982 (2026-06-16T17:42:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d01444b-63de-4123-a50a-398476b9d2f5.json and https://artists.proofprofile.net/proofs/artist/2d01444b-63de-4123-a50a-398476b9d2f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).