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album: Marie Hubert - Fille du Roy
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:55:08Z
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  track: Concerto pour cor No. 2 en mi bémol majeur, K. 417: II. Andante
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:55:08Z
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  track: Concerto pour cor No. 2 en mi bémol majeur, K. 417: III. Rondo : Allegro
  track: Concerto pour cor No. 3 en mi bémol majeur, K. 447: I. Allegro
  track: Concerto pour cor No. 3 en mi bémol majeur, K. 447: II. Romance : Larghetto
  track: Concerto pour cor No. 3 en mi bémol majeur, K. 447: III. Allegro
  track: Concerto pour cor No. 4 En mi bémol majeur, K. 495: I. Allegro maestoso
  track: Concerto pour cor No. 4 En mi bémol majeur, K. 495: II. Romance : Andante cantabile
  track: Concerto pour cor No. 4 En mi bémol majeur, K. 495: III. Rondo : Allegro vivace
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album: Roy: Trois poèmes d'Éloi de Grandmont: I. L'âge des rêves
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  date published: 2026-07-02T03:55:08Z
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Concerto pour cor No. 3 en mi bémol majeur, K. 447: I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Concerto pour cor No. 3 en mi bémol majeur, K. 447: II. Romance : Larghetto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Concerto pour cor No. 3 en mi bémol majeur, K. 447: III. Allegro
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genre: classical-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T20:47:18Z
audio: Concerto pour cor No. 3 en mi bémol majeur, K. 447: III. Allegro
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Concerto pour cor No. 4 En mi bémol majeur, K. 495: I. Allegro maestoso
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Concerto pour cor No. 4 En mi bémol majeur, K. 495: I. Allegro maestoso
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Concerto pour cor No. 4 En mi bémol majeur, K. 495: II. Romance : Andante cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T20:29:43Z
audio: Concerto pour cor No. 4 En mi bémol majeur, K. 495: II. Romance : Andante cantabile
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Concerto pour cor No. 4 En mi bémol majeur, K. 495: III. Rondo : Allegro vivace
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by artist: Les Violons du Roy
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Concerto pour cor No. 4 En mi bémol majeur, K. 495: III. Rondo : Allegro vivace
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Vivaldi
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T06:56:49Z
  audio: Concerto en fa majeur pour violon, 2 hautbois, basson, 2 cors, cordes et basse continue, RV 569: I. Allegro
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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track: Concerto en si mineur pour 4 violons, violoncelle, cordes et basse continue, Op. 3 No. 10, RV 580: III. Allegro
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  subject of: OpenTimestamps Proof of Existence
  audio: Concerto en si mineur pour 4 violons, violoncelle, cordes et basse continue, Op. 3 No. 10, RV 580: III. Allegro
track: Concerto en do majeur pour 2 trompettes, cordes et basse continue, RV 537: III. Allegro

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OTSVerificationAPI
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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 0x612b3e4f639bd5e5b2ef333788c9f11a898851fc907e3b13caa66fd79c8c1b01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CAJ721660206.
date published: 2026-06-13T13:32:09Z

Concerto en si mineur pour 4 violons, violoncelle, cordes et basse continue, Op. 3 No. 10, RV 580: III. Allegro
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additional property: Time Signature
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additional property: Danceability
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additional property: Speechiness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Mode Name
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Concerto en do majeur pour 2 trompettes, cordes et basse continue, RV 537: III. Allegro
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duration: PT2M48S
duration ms: 168320
explicit: false
by artist: Antonio Vivaldi
by artist: Mathieu Lussier
by artist: Les Violons du Roy
by artist: Benjamin Raymond
by artist: Marianne Boies
in album: Vivaldi
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  date published: 2016-03-01
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAJ721660222
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757ad2fe9e184ce6e4f7a34d40cfcba68e2972522d49763620c5c7afcd41716. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAJ721660222.
  date published: 2026-07-02T03:55:08Z
audio: Concerto en do majeur pour 2 trompettes, cordes et basse continue, RV 537: III. Allegro
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