Ian Date (born c. 1960) is an Australian acoustic and electric guitarist most associated with the Gypsy jazz and bebop genres. He achieved success in the 1980s in the band Sweet Atmosphere co-led with
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 0x83b71add139a8825cc0c2681c514bb6396ec29c28b22248459a00807f7880cc5. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ecca8e8-7293-4f56-9c62-7be3dade7b7f.json and https://artists.proofprofile.net/proofs/artist/0ecca8e8-7293-4f56-9c62-7be3dade7b7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).