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 0xcfcd2ed85665d602396ab2bdfed7411ae86c7c5082f6306eca24130d57b28331. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a13cfc83-e36e-4c9d-ae3b-c0a3191c0622.json and https://artists.proofprofile.net/proofs/artist/a13cfc83-e36e-4c9d-ae3b-c0a3191c0622.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TV Animation "Horizon on the Middle of Nowhere" Original Motion Picture Soundtrack
Horizon on the Middle of Nowhere Original Motion Picture Soundtrack 2
Kanashimi wa Dare no Negai demo Nai - TV Size
Sora wo Ikeba Tsubasa ga Ari - Inst Version
Ima dakara Omoidasu - Lite Arrange Version
Kokai no Todoku Dojo e to - Lite Arrange Version
Kanjo no Itaru Michi - Lite Arrange Version
TV Anime "BUDDY COMPLEX" Original Motion Picture Soundtrack
Parallel World Pharmacy Original Sound Track
Isekai deno Jutsuhatsudo?? - Strings Ver.
[Komada A Whisky Family] Original Sound Track
Dear my future (feat. Rui Komada/CV:Saori Hayami)