Kim Sang-bum (; born July 7, 1989), known professionally as Kim Bum (alternatively Kim Beom), is a South Korean actor and singer. He is best known for his television roles as F4 member So Yi-jung in B
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 0xcf745414f55bdd12b5cbfc5ba6f13518e887fa8955931744427d1f961f070324. 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/bcb22df0-d74a-4b23-88c6-10bf1e6aa168.json and https://artists.proofprofile.net/proofs/artist/bcb22df0-d74a-4b23-88c6-10bf1e6aa168.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Woman Who Still Wants to Marry (Original Soundtrack)