N-Sonic was a South Korean boy band consisting of J-Heart, Min-ki, Si-hoo, Choi Byul, Zion, and Bong-jun. They released their first EP We Are SuperBoys on October 6, 2011. History N-Sonic debuted on
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 0x9d7ca9e6ceb1c606b614c671d22eb31683ba4d05381ae6873bf5ac7176130cc0. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8641a0d-8a79-4860-8fda-0204d990df92.json and https://artists.proofprofile.net/proofs/artist/b8641a0d-8a79-4860-8fda-0204d990df92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).