Kim Sook (; born July 6, 1975) is a South Korean comedian. The second woman to ever win the Grand Prize in Entertainment (), her career has spanned for almost three decades. She is currently signed wi
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 0x2b503e09e8f4763546fccf011c58619c5f6ef2e14127ac26f989a881f86f1f2f. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff7c1077-35fc-4d6f-b87c-b6e711f44aea.json and https://artists.proofprofile.net/proofs/artist/ff7c1077-35fc-4d6f-b87c-b6e711f44aea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).