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followers: 224
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26601308bd6d764fdc089067eff1888f9d5047c1df293ed2a7331081196f72c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/902ed85a-2bfc-4481-95fb-b703ad19be03.json and https://artists.proofprofile.net/proofs/artist/902ed85a-2bfc-4481-95fb-b703ad19be03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
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track: The Nutcracker, Op. 71, TH 14: Overture
track: The Nutcracker, Op. 71, TH 14, Act I: II. March
track: The Nutcracker, Op. 71, TH 14, Act II: XIIe. Divertimento

The Nutcracker, Op. 71, TH 14: Overture
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duration ms: 193080
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Vladimir Jurowski
by artist: State Academic Symphony Orchestra of Russia "Evgeny Svetlanov"
in album: Tchaikovsky: The Nutcracker
  type: MusicAlbum
  date published: 2019-11-01
isrc code: NLE421903501
additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-07-08T03:20:19+00:00
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: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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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 0x6d35acf32f31f1df4f2dd33a807add042a332c022cf9228d2e8a04cfc7c7467a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLE421903501.
  date published: 2026-07-08T03:22:41Z
audio: The Nutcracker, Op. 71, TH 14: Overture
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The Nutcracker, Op. 71, TH 14, Act I: II. March
type: MusicRecording
duration: PT2M27S
duration ms: 147080
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Vladimir Jurowski
by artist: State Academic Symphony Orchestra of Russia "Evgeny Svetlanov"
in album: Tchaikovsky: The Nutcracker
  type: MusicAlbum
  date published: 2019-11-01
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2fad33ca126f78e20e7099244ffa390efbc9b3264846305bc564a30b07ddf. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NLE421903503.
  date published: 2026-07-22T15:38:35Z
audio: The Nutcracker, Op. 71, TH 14, Act I: II. March
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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 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

The Nutcracker, Op. 71, TH 14, Act II: XIIe. Divertimento
type: MusicRecording
duration: PT2M20S
duration ms: 140840
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Vladimir Jurowski
by artist: State Academic Symphony Orchestra of Russia "Evgeny Svetlanov"
in album: Tchaikovsky: The Nutcracker
  type: MusicAlbum
  date published: 2019-11-01
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a838b8a83f8dd5cc9bd89088e0aaa1aa739ff34fec6306bb90163077180f2c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLE421903517.
  date published: 2026-07-31T02:19:15Z
audio: The Nutcracker, Op. 71, TH 14, Act II: XIIe. Divertimento
  type: AudioObject
  additional property: Tempo (BPM)
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 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