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 0x927b7438b1e65e1ab68df7d679c80684805c4b035036c3bbb1334789345573f0. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67da0ff4-bd3d-41c0-b575-b3371f0ea000.json and https://artists.proofprofile.net/proofs/artist/67da0ff4-bd3d-41c0-b575-b3371f0ea000.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ﾁｬｲｺﾌｽｷｰ&ﾒﾝﾃﾞﾙｽｿﾞｰﾝ:ｳﾞｧｲｵﾘﾝ協奏曲
メンデルスゾーン：ヴァイオリン協奏曲 ホ短調 作品64 - 第1楽章 Allegro molto appassionato
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc510cdd1d36f76d2776a5e04efcab66887f9062e2745774683f15a1d8d1071ee. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601502959.
NHK大河ドラマ 真田丸 オリジナル・サウンドトラック I 音楽:服部隆之
ツィゴイネルワイゼン〜名曲コレクション
NHK大河ドラマ 真田丸 オリジナル・サウンドトラック III 音楽:服部隆之
大河ドラマ 真田丸 オリジナル・サウンドトラック THE BEST
NHK大河ドラマ 真田丸 音楽全集 服部隆之
フランク：ヴァイオリン・ソナタ／ブラームス：ヴァイオリン・ソナタ第1番《雨の歌》
フランク:ヴァイオリン・ソナタ/ブラームス:ヴァイオリン・ソナタ 第1番《雨の歌》
フランク:ヴァイオリン・ソナタ イ長調(第1楽章 Allegretto ben moderato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc563418c96cb141f6a79d2b1262b9f5f1198150356ba5a2553f90f71d62ca4b8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601901109.
ショスタコーヴィチ:ヴァイオリン協奏曲第1番