Harry Haag James (March 15, 1916 – July 5, 1983) was an American musician who is best known as a trumpet-playing band leader who led a big band to great commercial success from 1939 to 1946. He broke
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 0x7de74cc4cb1ce0e81c2998a51edbfe53d94871303f3871613875d3ab6345b951. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16553823-6c13-407f-a76d-a1a42de76be5.json and https://artists.proofprofile.net/proofs/artist/16553823-6c13-407f-a76d-a1a42de76be5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).