Jimmy & Johnny were an American country music duo composed of Jimmy Lee Fautheree and "Country" Johnny Mathis. They scored several hits on the U.S. country charts in the 1950s. The duo's career began
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 0x6b1e5f84df13c55780c0701722de6024ad3ee9525fc4c23a3c1491078264d478. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ef5536a-ec4b-48af-b8be-d3351c372fff.json and https://artists.proofprofile.net/proofs/artist/7ef5536a-ec4b-48af-b8be-d3351c372fff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).