1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf239681c637ca951ccfb9f3db901cc551723d7198c8494c7c1cfd5d35d50415. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81e339fe-910e-4479-baae-6b87d81fbc4a.json and https://artists.proofprofile.net/proofs/artist/81e339fe-910e-4479-baae-6b87d81fbc4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hole In Your Face (Re-Mastering Ver.) (Remastered)
Hang Up (feat.San E, TAEWAN) (Hanhae Solo)
Under Age's Song (feat. Whee In) (Kiggen Solo)