Pierre Cochereau
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description: Pierre Eugène Charles Cochereau (9 July 1924 – 6 March 1984) was a French organist, improviser, composer, and pedagogue. Cochereau was titular organist of the cathedral of Notre-Dame de Paris from 19
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album: Cochereau: The Early Recordings
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  date published: 1955
album: Récital d'orgue (Aux grandes orgues de la cathédrale Notre-Dame de Paris) (Mono Version)
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  date published: 1960-01-01
album: Cochereau: 12 Unissued Improvisations
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  date published: 1969
album: Poulenc: Concerto for Organ, Strings and Timpani & Cochereau: Organ Improvisations
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  date published: 1970
album: Cochereau: 2 Improvisations in Concert at Notre-Dame in Paris
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album: Cochereau: The Art of Variation
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  date published: 1970
album: Cochereau: Improvisations for Organ on Easter Themes
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  date published: 1971
album: Pierre Cochereau
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  date published: 1972
album: Cochereau: Improvisations for Organ on Christmas Themes
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  date published: 1973
album: Cochereau: The Liturgic Organist
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  date published: 1973
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album: Cochereau: The Legend
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album: Cochereau: The organist of Notre-Dame in Paris
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  date published: 1975
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  track: Te Deum (Gregorian)
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    audio: Te Deum (Gregorian)
  track: O Filii et Filiae
  track: Prose of Easter (Victimae Paschali Laudes)
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  track: Prose of the Consecration (Jerusalem et Sion Filiae)
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album: Cochereau: 2 Improvised Symphonies for Organ
album: Purcell, Bach, Delerue, Cochereau: Works for Organ/Organ & Trumpet
album: Cochereau: A Musical Legacy
album: Pierre Cochereau aux grandes orgues de Notre-Dame de Paris
album: Cochereau: Improvisations In Concert At Notre-Dame-in Paris
album: Improvisation: The Illusionist's Art
album: J.S. Bach - Toccata And Fugue in D Minor bwv 565
album: Cochereau: The Written Works
album: The Art Of Pierre Cochereau
album: Grandes Orgues A Notre-Dame De Paris
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album: Cochereau: Two Improvisations In Form Of Suites
album: Vierne: Symphony No. 2 in E Minor & Dupré: Symphonie-Passion, Op. 23
album: Cochereau: 3 Improvised symphonies
album: De Saint-Martin, Mouret, Vierne, Messiaen, Cochereau: Organ Works
album: Liszt, Cochereau: Organ Works at Notre-Dame in Paris
album: Cochereau: An Organ Recital at Notre-Dame in Paris
album: Grandes Orgues De Notre-Dame De Paris, Vol. 1
album: Grandes orgues de notre-dame de Paris, vol. 2
album: Grandes Orgues De Notre-Dame De Paris, Vol. 3
album: Grandes orgues de notre-dame de Paris, vol. 4
track: Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": Ia. Adagio – Allegro moderato –
track: Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": IIa. Allegro moderato – Presto –
track: Boléro sur un thème de charles racquet pour grand
track: Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": Ib. Poco adagio
track: Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": IIb. Maestoso – Allegro

Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": Ia. Adagio – Allegro moderato –
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Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": IIa. Allegro moderato – Presto –
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Boléro sur un thème de charles racquet pour grand
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Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": Ib. Poco adagio
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0b8aaa9a0f8469f7ce354332c69a65a29474fbc8c0c87e980b15523bfc3393. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEF058100972.
  date published: 2026-07-31T12:24:41Z
audio: Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": Ib. Poco adagio
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isrc code: DEF058100972
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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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

Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": IIb. Maestoso – Allegro
type: MusicRecording
duration: PT8M31S
duration ms: 511000
explicit: false
by artist: Camille Saint-Saëns
by artist: Pierre Cochereau
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Karajan A-Z: Saint-Saëns - Schoenberg
  type: MusicAlbum
  date published: 2024-06-07
genre: classical
genre: late-romantic-era
genre: french-romanticism
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34811c1c714672b2eac05bc7b04d5c05018567cc42853312779711957215eb8b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEF058100974.
  date published: 2026-07-31T04:14:58Z
audio: Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": IIb. Maestoso – Allegro
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
    value: 0.081
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.151
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.658
  additional property: Key Name
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    value: C
  additional property: Mode Name
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isrc code: DEF058100974
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T04:14:58+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 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

Te Deum (Gregorian)
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.148
additional property: Energy
  type: PropertyValue
  value: 0.234
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.736
additional property: Instrumentalness
  type: PropertyValue
  value: 0.854
additional property: Liveness
  type: PropertyValue
  value: 0.202
additional property: Valence (Positivity)
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  value: 0.12
additional property: Loudness (dB)
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  value: -14.826
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
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O Filii et Filiae
type: MusicRecording
duration: PT4M51S
duration ms: 291600
explicit: false
by artist: Pierre Cochereau
in album: Great Hours of Liturgy at Notre-Dame in Paris
  type: MusicAlbum
  date published: 1977
isrc code: FRY837310250
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x7a776b9cdf869a0486e3210e775ca1dfb63563c8bfe3146b492624b8e61a3fc6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956551
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956551
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRY837310250
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T21:18:05Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a776b9cdf869a0486e3210e775ca1dfb63563c8bfe3146b492624b8e61a3fc6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRY837310250.
  date published: 2026-07-03T21:18:05Z
audio: O Filii et Filiae
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.125
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.489
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.054
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.516
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
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Prose of Easter (Victimae Paschali Laudes)
type: MusicRecording
duration: PT3M27S
duration ms: 207160
explicit: false
by artist: Pierre Cochereau
in album: Great Hours of Liturgy at Notre-Dame in Paris
  type: MusicAlbum
  date published: 1977
isrc code: FRY837310260
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T19:53:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdf321ed723f4ac7cf72b7c83f4b031455f9d323fe2a9f91aaa73d89aae49e535
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956560
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956560
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRY837310260
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T23:28:02Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf321ed723f4ac7cf72b7c83f4b031455f9d323fe2a9f91aaa73d89aae49e535. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRY837310260.
  date published: 2026-07-03T23:28:02Z
audio: Prose of Easter (Victimae Paschali Laudes)
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 113.17
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.173
  additional property: Energy
    type: PropertyValue
    value: 0.317
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.862
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.549
  additional property: Liveness
    type: PropertyValue
    value: 0.241
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.144
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.491
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
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Magnificat (Gregorian)
type: MusicRecording
duration: PT3M58S
duration ms: 238880
explicit: false
by artist: Pierre Cochereau
in album: Great Hours of Liturgy at Notre-Dame in Paris
  type: MusicAlbum
  date published: 1977
isrc code: FRY837310270
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T14:53:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0527b1201ab4fc26c221fd3c1196073fb08c21cccb79fc11ea7f2a4df92fc2a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958901
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958901
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRY837310270
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T17:55:08Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0527b1201ab4fc26c221fd3c1196073fb08c21cccb79fc11ea7f2a4df92fc2a3. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:55:08Z), 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/FRY837310270.
  date published: 2026-07-20T17:55:08Z
audio: Magnificat (Gregorian)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 82.931
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.092
  additional property: Energy
    type: PropertyValue
    value: 0.252
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.936
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.031
  additional property: Liveness
    type: PropertyValue
    value: 0.121
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.079
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.334
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

O Jesu Christe
type: MusicRecording
duration: PT3M13S
duration ms: 193080
explicit: false
by artist: Pierre Cochereau
in album: Great Hours of Liturgy at Notre-Dame in Paris
  type: MusicAlbum
  date published: 1977
isrc code: FRY837710980
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-18T22:22:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd415a732d5d3617b30930eba52d158c018f17f8badf56a373283984ad0414aae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958690
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958690
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRY837710980
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T07:14:39Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd415a732d5d3617b30930eba52d158c018f17f8badf56a373283984ad0414aae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRY837710980.
  date published: 2026-07-19T07:14:39Z
audio: O Jesu Christe
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 83.896
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.11
  additional property: Energy
    type: PropertyValue
    value: 0.183
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.939
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.031
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.847
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Prose of the Consecration (Jerusalem et Sion Filiae)
type: MusicRecording
duration: PT5M18S
duration ms: 318640
explicit: false
by artist: Pierre Cochereau
in album: Great Hours of Liturgy at Notre-Dame in Paris
  type: MusicAlbum
  date published: 1977
isrc code: FRY837310280
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-13T08:28:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd21a6b2ada4bb552d4979c62e283ee6d88802e1fa1343d2294e0b674a7d3b4cb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957826
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957826
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRY837310280
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-13T08:56:09Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21a6b2ada4bb552d4979c62e283ee6d88802e1fa1343d2294e0b674a7d3b4cb. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/FRY837310280.
  date published: 2026-07-13T08:56:09Z
audio: Prose of the Consecration (Jerusalem et Sion Filiae)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.917
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.119
  additional property: Energy
    type: PropertyValue
    value: 0.347
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.363
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.921
  additional property: Liveness
    type: PropertyValue
    value: 0.311
  additional property: Valence (Positivity)
    type: PropertyValue
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Sancta et Immaculata (Gregorian)
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Cochereau: 2 Improvised Symphonies for Organ
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date published: 1978

Purcell, Bach, Delerue, Cochereau: Works for Organ/Organ & Trumpet
type: MusicAlbum
date published: 1980

Cochereau: A Musical Legacy
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date published: 1984

Pierre Cochereau aux grandes orgues de Notre-Dame de Paris
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date published: 1985-01-01

Cochereau: Improvisations In Concert At Notre-Dame-in Paris
type: MusicAlbum
date published: 1986-07-01

Improvisation: The Illusionist's Art
type: MusicAlbum
date published: 1992-11-23

Improvisation: The Illusionist's Art
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date published: 1992-11-23

J.S. Bach - Toccata And Fugue in D Minor bwv 565
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date published: 1995-01-01

Cochereau: The Written Works
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date published: 2002-09-10

The Art Of Pierre Cochereau
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date published: 2004-11-08

Grandes Orgues A Notre-Dame De Paris
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date published: 2006-01-01

Pierre Cochereau aux grandes orgues de Notre-Dame de Paris
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date published: 2015-01-12

Cochereau in Concert at Notre-Dame in Paris
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date published: 2015-04-24

Cochereau: The Legend
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date published: 2015-06-01

Cochereau: Two Improvisations In Form Of Suites
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date published: 2017-11-06

Vierne: Symphony No. 2 in E Minor & Dupré: Symphonie-Passion, Op. 23
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date published: 2020-04-20

Cochereau: 3 Improvised symphonies
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date published: 2020-04-20

De Saint-Martin, Mouret, Vierne, Messiaen, Cochereau: Organ Works
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date published: 2020-04-20

Liszt, Cochereau: Organ Works at Notre-Dame in Paris
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date published: 2020-04-20

Cochereau: An Organ Recital at Notre-Dame in Paris
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date published: 2020-04-20

Grandes Orgues De Notre-Dame De Paris, Vol. 1
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date published: 2020-12-25

Grandes orgues de notre-dame de Paris, vol. 2
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date published: 2020-12-31

Grandes Orgues De Notre-Dame De Paris, Vol. 3
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date published: 2021-01-06

Grandes orgues de notre-dame de Paris, vol. 4
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date published: 2021-01-11