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 0x31b7bd7309b3e593ad735694cd5f24aeb50c5c4f8bb8624ca3ad30c7cc764858. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4c05f79-3cab-427b-877d-7ccfbaf93ede.json and https://artists.proofprofile.net/proofs/artist/f4c05f79-3cab-427b-877d-7ccfbaf93ede.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
フジテレビ系ドラマ「ナオミとカナコ」オリジナルサウンドトラック
Julian Schnabel: A Private Portrait (Original Motion Picture Soundtrack)
Perfetta Illusione (Colonna Sonora Originale)
The Life You Wanted (Soundtrack from the Netflix Series)
映画「夏目アラタの結婚」オリジナル・サウンドトラック
A Conviction of Marriage (Natsume Arata no Kekkon) Original Soundtrack
Exodus (Original Motion Picture Soundtrack)