John Jacob (J.J.) Malone (August 20, 1935 – February 20, 2004) was an American West Coast blues, electric blues and soul blues guitarist, singer and keyboardist. His best-known recordings were "It's a
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 0xd14f2c41dc683f03b1413e9026aa5374d08b6d768cad196df164c5ca271a6ae5. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7510ad1-5043-4de4-8fde-a054544368f4.json and https://artists.proofprofile.net/proofs/artist/f7510ad1-5043-4de4-8fde-a054544368f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).