Nouera (; stylized as NouerA) is a South Korean boy band formed through KBS' reality competition program Make Mate 1 and managed by Nouer Entertainment. The group consists of seven members: Gihyeon,
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 0xc1e1fabf2b6f940adae9c7fb950c6c6b6f7afe372931de6b6093fd65ad872f01. 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/fb305764-5e54-42e8-932d-e7c2435616be.json and https://artists.proofprofile.net/proofs/artist/fb305764-5e54-42e8-932d-e7c2435616be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).