Kim Seung-min (; born September 22, 2000), known mononymously as Seungmin, is a South Korean singer. He is a member of the South Korean boy band Stray Kids, formed by JYP Entertainment in 2017. Addit
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 0x98255e8d35b8d3a9477aa5b233291d70ae1a6ff3914b35489c8700c92a4ccddd. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd8b509e-709f-4dc1-939b-2bba6db64a11.json and https://artists.proofprofile.net/proofs/artist/bd8b509e-709f-4dc1-939b-2bba6db64a11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).