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 0xb46c56bc0627efab5afea9e94f726923bd1aaa9e7a5c6f2b8e049d4896b817df. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a42b8886-df12-487f-9920-28bf70f2f375.json and https://artists.proofprofile.net/proofs/artist/a42b8886-df12-487f-9920-28bf70f2f375.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ「六花の勇者」OP主題歌「Cry for the Truth (TV edit)」
TVアニメ「六花の勇者」OP&ED double A-sideシングル「Cry for the Truth/Secret Sky」初回盤 - EP
TVアニメ「だがしかし」オープニングテーマ Checkmate!?(TVedit.)
Realistic (TV Anime "KUROMUKURO" ED) [Instrumental]
TV Anime "Rokka-Braves of Six Flowers" OP & ED Double A-side Single "Cry for the Truth / Secret Sky" (First Edition)