Dong-Suk Kang (born April 28, 1954) is a South Korean violinist. Biography Kang was born in Seoul, and played his first concert at the age of eight. He went to New York in 1967 to study at the Juilli
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 0x0186dc5aa599d9893b0eb505dddbbcd255d284a61508904e521be381864acaec. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c681357e-e44d-4513-a349-12d5bc0a3fd9.json and https://artists.proofprofile.net/proofs/artist/c681357e-e44d-4513-a349-12d5bc0a3fd9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).