「くるみ割り人形」～花のワルツ（チャイコフスキー）
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duration: PT7M6S
duration ms: 426834
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Vladimir Fedoseyev
by artist: モスクワ放送交響楽団
in album: ザ・ワルツ 50
  type: MusicAlbum
  date published: 2018-04-25
isrc code: JPVI09015740
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  value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805a131823d152b00dd38c64ee0ae0a043df6c1186a45da2f1af2256fb598afa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPVI09015740.
  date published: 2026-07-08T03:53:27Z
audio: 「くるみ割り人形」～花のワルツ（チャイコフスキー）
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