David Choi (born March 22, 1986) is a Korean-American singer, songwriter, producer, music composer, entrepreneur, YouTuber, and a member of parody K-pop group BgA based in Los Angeles. He has worked w
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 0x36d02893bc19b68064f1b56a65e811a23c439c438093d5063f6e4f43f893db45. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32c78803-27cd-422f-b466-d896a2585822.json and https://artists.proofprofile.net/proofs/artist/32c78803-27cd-422f-b466-d896a2585822.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).