James D. Kang is an American academic, orthopedic surgeon, and scientist, specializing in spinal surgery. He is Chair Emeritus of the Department of Orthopaedic Surgery at Brigham and Women's Hospital
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 0x98dbf07a25e440a3336ebe680d6e99f85b5334caa89f657f789d2a39ee09a070. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d29302c7-ed4e-42c2-8931-e412298a630e.json and https://artists.proofprofile.net/proofs/artist/d29302c7-ed4e-42c2-8931-e412298a630e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).