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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a346ea89b22d89029d560bc1cea80830fbba0a2257e5a4e49013713ac3494c5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58aea712-bcff-4892-a7ad-5fe89e434f18.json and https://artists.proofprofile.net/proofs/artist/58aea712-bcff-4892-a7ad-5fe89e434f18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
歴史教養音楽集 (第12集 - 歌川広重・ペリー)
Japanese History Educational Sounds (vol.12 Utagawa Hiroshige, Perry)
歴史教養音楽集 (第3集 - 聖武天皇・行基・紫式部)
Japanese History Educational Sounds (vol.3 ShomuTenno, Gyoki, Murasaki Shikibu)
Fighting Spirit - Less Voice and Brass Mix
Winner's Dance - LessElectricGuitarSolo Mix
Yu-Yake - Slow Tempo OnlyAcousticGuitar Mix