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followers: 27
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSVerificationAPI
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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 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
subject of: OpenTimestamps Proof of Existence
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album: Mussorgsky & Rimsky-Korsakov: Extraits d'opéras - Glière: Danse des marins (Mono Version)
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  date published: 1952-01-01
album: Orchestral Music - Beethoven, L. / Dvorak, A. / Tchaikovsky, P.I. / Svendsen, J. / Nielsen, C. / Stravinsky, I. (Malko) (1947-1950)
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  by artist: David Oistrakh
  by artist: Philharmonia Orchestra
  by artist: Nikolai Malko
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-29T19:35:34Z
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  additional property: OTSVerificationAPI
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T10:20:10Z
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track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: III. Märchen. Andantino
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (a) Tema con variazioni. Tema. Andantino
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (b) Variation I. Allegro moderato
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (c) Variation II. Allegro energico
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (d) Variation III. Tempo di valse
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (e) Variation IV. Fuga doppia
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (f) Variation V. Presto scherzando
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (g) Variation VI. Tempo di Mazurka
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (h) Variazione finale e coda
track: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: V. Tarantella. Presto

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duration: PT8M17S
duration ms: 497480
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by artist: Sergei Taneyev
by artist: David Oistrakh
by artist: Philharmonia Orchestra
by artist: Nikolai Malko
in album: Taneyev: Concert Suite, Op. 28 - Tartini: "Devil's Trill" Sonata - Mozart: Violin Sonata No. 32, K. 454
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:51:49Z
audio: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: III. Märchen. Andantino
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Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (a) Tema con variazioni. Tema. Andantino
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duration: PT1M5S
duration ms: 65346
explicit: false
by artist: Sergei Taneyev
by artist: David Oistrakh
by artist: Philharmonia Orchestra
by artist: Nikolai Malko
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:09:47Z
audio: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (a) Tema con variazioni. Tema. Andantino
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Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (b) Variation I. Allegro moderato
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duration: PT1M8S
duration ms: 68800
explicit: false
by artist: Sergei Taneyev
by artist: David Oistrakh
by artist: Philharmonia Orchestra
by artist: Nikolai Malko
in album: Taneyev: Concert Suite, Op. 28 - Tartini: "Devil's Trill" Sonata - Mozart: Violin Sonata No. 32, K. 454
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T01:32:48Z
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duration ms: 96866
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by artist: Sergei Taneyev
by artist: David Oistrakh
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (d) Variation III. Tempo di valse
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by artist: Philharmonia Orchestra
by artist: Nikolai Malko
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (e) Variation IV. Fuga doppia
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by artist: Philharmonia Orchestra
by artist: Nikolai Malko
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (e) Variation IV. Fuga doppia
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Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (f) Variation V. Presto scherzando
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by artist: Philharmonia Orchestra
by artist: Nikolai Malko
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T09:09:19Z
audio: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (f) Variation V. Presto scherzando
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Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (g) Variation VI. Tempo di Mazurka
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (g) Variation VI. Tempo di Mazurka
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Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (h) Variazione finale e coda
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:30:10Z
audio: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: IV. (h) Variazione finale e coda
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Taneyev: Concert Suite for Violin and Orchestra, Op. 28: V. Tarantella. Presto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:13Z
audio: Taneyev: Concert Suite for Violin and Orchestra, Op. 28: V. Tarantella. Presto
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