Национальный филармонический оркестр России
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-14T12:06:27Z
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track: Щелкунчик, соч. 71, действие II картина 3: No. 14, Pas de duex - Танец феи Драже и принца Оршада
track: Симфония №4 соль мажор: III. Ruhevoll (Poco adagio)
track: Лебединое озеро, соч. 20a: No. 1, Сцена
track: Щелкунчик, соч. 71, действие II картина 3: No. 13, Вальс цветов

Щелкунчик, соч. 71, действие II картина 3: No. 14, Pas de duex - Танец феи Драже и принца Оршада
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Vladimir Spivakov
by artist: Национальный филармонический оркестр России
in album: Christmas with Vladimir Spivakov
  type: MusicAlbum
  date published: 2022-12-23
popularity: 27
isrc code: RUAGT2210123
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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 → 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
additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c586f942239b9d91e59dedfb816681ef209e76c88c4c1a83ec189a856e3ae6b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/RUAGT2210123.
  date published: 2026-06-13T15:41:10Z
audio: Щелкунчик, соч. 71, действие II картина 3: No. 14, Pas de duex - Танец феи Драже и принца Оршада
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Симфония №4 соль мажор: III. Ruhevoll (Poco adagio)
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duration: PT21M40S
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by artist: Густав Малер
by artist: Vladimir Spivakov
by artist: Национальный филармонический оркестр России
in album: Gustav Mahler: Symphony No. 4 in G-Major (Live)
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  date published: 2024-07-19
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Симфония №4 соль мажор: III. Ruhevoll (Poco adagio)
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Лебединое озеро, соч. 20a: No. 1, Сцена
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duration: PT2M58S
duration ms: 178106
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Vladimir Spivakov
by artist: Национальный филармонический оркестр России
in album: Christmas with Vladimir Spivakov
  type: MusicAlbum
  date published: 2022-12-23
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6710a7ea25087105b90ba30f1eb3f769e787fa4b52d4fc3255b4dce01e417c9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/RUAGT2210108.
  date published: 2026-07-31T17:29:52Z
audio: Лебединое озеро, соч. 20a: No. 1, Сцена
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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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 → 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Щелкунчик, соч. 71, действие II картина 3: No. 13, Вальс цветов
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duration: PT7M26S
duration ms: 446680
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Vladimir Spivakov
by artist: Национальный филармонический оркестр России
in album: Christmas with Vladimir Spivakov
  type: MusicAlbum
  date published: 2022-12-23
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa074f394bb1e37fb78493dd9a78476d0e2bfb8f12202505f8b3fab89a3a8ae4b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/RUAGT2210122.
  date published: 2026-07-29T19:35:34Z
audio: Щелкунчик, соч. 71, действие II картина 3: No. 13, Вальс цветов
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additional property: OTSVerifyInstructions
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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 → 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch