is a Japanese band and solo performing name of singer-songwriter and producer Jun Tanaka. Gentouki has released 6 major singles and 5 major albums in the band's history. Most recent album Tanjoubi wa
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 0x98107470ee7c8198e2a39cebd052beaaa009f46256e5eaa31b0c3e43c7808159. 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/b8b3c9c8-3cd1-45e7-994b-3839d3905653.json and https://artists.proofprofile.net/proofs/artist/b8b3c9c8-3cd1-45e7-994b-3839d3905653.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).