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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: 2026-06-21T18:08:38Z
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album: Walter Braunfels: Große Messe, Op. 37
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  date published: 2016-12-10
album: Musikstadt Berlin
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album: Claudio Abbado - The RCA and Sony Album Collection
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album: Wunderbare Weihnacht' (Die schönsten Lieder, Chor- und Orgelwerke zum Fest)
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    by artist: Dresdner Philharmonie
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-06-13T15:41:10Z
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album: Hanns Eisler Edition
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album: Beethoven: Unknown Masterworks
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  track: My Heart is Inditing, HWV 261: IV. Kings Shall Be Thy Nursing Fathers
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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  track: Let Thy Hand Be Strengthened, HWV 259: I. Let Thy Hand Be Strengthened
  track: Let Thy Hand Be Strengthened, HWV 259: III. Allelujah!
  track: The King Shall Rejoice, HWV 260: IV. Glory and Great Worship Hast Thou Laid Upon Him
album: Handel: Belshazzar
album: Beethoven: Unknown Masterworks, Vol. 6
album: Katzer: Medea in Korinth
album: Eisler: Goethe-Rhapsodie / Mitte des Jahrhunderts / Das Vorbild / Kriegsfibel
album: Schubert: Lazarus (Die Feier der Auferstehung)
album: Eisler: Tagebuch / Suite No. 1 / Tempo der Zeit
album: Beethoven: Kanons, Epigramme und Scherze
album: Händel: Friedensode / Utrechter Tedeum
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album: Wunderschöne Weihnachtschöre - Maria durch ein Dornwald ging - In dulci jubilo - Wie schön singt uns der Engel Schar - Osanna in excelsis - Stille Nacht
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Prométhée - Le Poème du feu, Op. 60
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by artist: Alexander Scriabin
by artist: Claudio Abbado
by artist: Berliner Philharmoniker
by artist: Martha Argerich
by artist: Berliner Singakademie
in album: Martha Argerich - The Complete Sony Recordings
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genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: contemporary-classical
genre: impressionism
genre: russian-romanticism
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
audio: Prométhée - Le Poème du feu, Op. 60
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765c5c453f15e3fa084ab878d7f6beeff3e7aebcdce47615ece8a5e57052f64c. 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/NLY331508597.
date published: 2026-07-08T03:22:41Z

My Heart is Inditing, HWV 261: IV. Kings Shall Be Thy Nursing Fathers
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Let Thy Hand Be Strengthened, HWV 259: I. Let Thy Hand Be Strengthened
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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Let Thy Hand Be Strengthened, HWV 259: III. Allelujah!
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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The King Shall Rejoice, HWV 260: IV. Glory and Great Worship Hast Thou Laid Upon Him
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audio: The King Shall Rejoice, HWV 260: IV. Glory and Great Worship Hast Thou Laid Upon Him
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Beethoven: Unknown Masterworks, Vol. 6
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Katzer: Medea in Korinth
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Eisler: Goethe-Rhapsodie / Mitte des Jahrhunderts / Das Vorbild / Kriegsfibel
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Schubert: Lazarus (Die Feier der Auferstehung)
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Eisler: Tagebuch / Suite No. 1 / Tempo der Zeit
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Beethoven: Kanons, Epigramme und Scherze
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Händel: Friedensode / Utrechter Tedeum
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Martha Argerich - The Complete Sony Recordings
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track: Prométhée - Le Poème du feu, Op. 60

Wunderschöne Weihnachtschöre - Maria durch ein Dornwald ging - In dulci jubilo - Wie schön singt uns der Engel Schar - Osanna in excelsis - Stille Nacht
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Schubert: Lazarus, D. 689
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