Gustav Leonhardt
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description: Gustav Maria Leonhardt (30 May 1928 – 16 January 2012) was a Dutch keyboardist, conductor, musicologist, teacher and editor. He was a leading figure in the historically informed performance movement t
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album: The Early Recordings, Vol. 1
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  track: Recorder Concerto in C Major, RV 443: I. Allegro
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  track: Recorder Concerto in C Major, RV 443: II. Largo
  track: Recorder Sonata in C Major, TWV 41:C5: I. Adagio - Allegro
album: J.S. Bach: Secular Cantatas Nos. 208 & 215
album: J.S. Bach: Secular Cantatas BWV 173a & 201
album: Bach, J.S.: Easter Oratorio/Ascension Oratorio (Audior)
album: Elizabethan Organ Music
album: Purcell Edition Volume 3 : Odes, Anthems & Ceremonial Music
album: Bach: Sacred Cantatas, BWV 7 - 9
album: Bach: Sacred Cantatas, BWV 10 - 12
track: Bach: Notebook for Wilhelm Friedemann Bach: No. 8, Prelude in F Major, BWV 927
track: Ode “Welcome to all pleasures
track: Come ye sons of art, 1694, ode for Queen Mary (excerpts)
track: Schweigt stille, plaudert nicht, BWV 211 "Coffee Cantata": 8. Aria: "Heute noch, lieber Vater, tut es doch"
track: Le Bourgeois Gentilhomme - Comédie-Ballet, LWV 43: Ouverture
track: Bull's Goodnight, MB 143

Recorder Sonata in C Major, TWV 41:C5: I. Adagio - Allegro
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Kommt, eilet und laufet (Easter Oratorio), BWV 249: 1a. Adagio
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Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 2, Aria. "Merkt und hört, ihr Menschenkinder"
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  date published: 2026-07-08T03:53:27Z
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Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 4, Aria. "Des Vaters Stimme ließ sich hören"
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a12e46fea30f79969a43a927f2fd4ddb89639e9ab5f761b2f4d94d21258667. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA807101404.
  date published: 2026-07-08T03:53:27Z
audio: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 4, Aria. "Des Vaters Stimme ließ sich hören"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.346
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.341
  additional property: Energy
    type: PropertyValue
    value: 0.184
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.959
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.121
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.307
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.758
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 5, Rezitative. "Als Jesus dort nach seinen Leiden"
type: MusicRecording
duration: PT1M0S
duration ms: 60573
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Max van Egmond
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 1
genre: classical
genre: classical-piano
isrc code: DEA807101405
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:48:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcaeba2ac9b20ed17fb1f287eea1650da38fddcab967df939673ddfcf5e8bfff7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807101405
additional property: OTSTimestamp
  type: PropertyValue
  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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeba2ac9b20ed17fb1f287eea1650da38fddcab967df939673ddfcf5e8bfff7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA807101405.
  date published: 2026-07-08T03:53:27Z
audio: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 5, Rezitative. "Als Jesus dort nach seinen Leiden"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.935
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.375
  additional property: Energy
    type: PropertyValue
    value: 0.065
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.301
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.311
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.865
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 1, Chor. "Liebster Gott, wenn werd ich sterben?"
type: MusicRecording
duration: PT5M57S
duration ms: 357840
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Choir of King's College, Cambridge
by artist: Leonhardt-Consort
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: DEA807101201
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:28:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a0de557d727d9918ff6a6eb216a7d36a7a477f984c9e4420efb6e3633945ae2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807101201
additional property: OTSTimestamp
  type: PropertyValue
  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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0de557d727d9918ff6a6eb216a7d36a7a477f984c9e4420efb6e3633945ae2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA807101201.
  date published: 2026-07-08T03:53:27Z
audio: Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 1, Chor. "Liebster Gott, wenn werd ich sterben?"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.371
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.286
  additional property: Energy
    type: PropertyValue
    value: 0.179
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.934
  additional property: Liveness
    type: PropertyValue
    value: 0.144
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.207
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.12
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 3, Rezitativ. "Zwar fühlt mein schwaches Herz"
type: MusicRecording
duration: PT1M10S
duration ms: 70733
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Paul Esswood
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: DEA807101203
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:04:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9bcdb0dafce36ae2d5f4c72aec51627ca30f4650974ccb6f745bac19b72ba1a8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807101203
additional property: OTSTimestamp
  type: PropertyValue
  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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcdb0dafce36ae2d5f4c72aec51627ca30f4650974ccb6f745bac19b72ba1a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA807101203.
  date published: 2026-07-08T03:53:27Z
audio: Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 3, Rezitativ. "Zwar fühlt mein schwaches Herz"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.341
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.233
  additional property: Energy
    type: PropertyValue
    value: 0.096
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.964
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.165
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.894
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 4, Aria. "Doch weichet, ihr tollen, vergeblichen Sorgen!"
type: MusicRecording
duration: PT5M16S
duration ms: 316733
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Max van Egmond
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 2
genre: classical
genre: classical-piano
isrc code: DEA807101204
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T11:49:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf70a83179bb65d2d11a915488c7bc745e15434da0b6a666dac0be88d7e15614f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807101204
additional property: OTSTimestamp
  type: PropertyValue
  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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70a83179bb65d2d11a915488c7bc745e15434da0b6a666dac0be88d7e15614f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA807101204.
  date published: 2026-07-08T03:53:27Z
audio: Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 4, Aria. "Doch weichet, ihr tollen, vergeblichen Sorgen!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.405
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.431
  additional property: Energy
    type: PropertyValue
    value: 0.165
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.073
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.523
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.286
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 1, Chor. "Christ unser Herr zum Jardan kam"
type: MusicRecording
duration: PT7M50S
duration ms: 470200
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Choir of King's College, Cambridge
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 2
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56584cb9d37acf35b79c425851d852cfa60a7e58690101789e0c266b6d47f763. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEA807101401.
  date published: 2026-07-31T05:17:02Z
audio: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 1, Chor. "Christ unser Herr zum Jardan kam"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.486
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.26
  additional property: Energy
    type: PropertyValue
    value: 0.139
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.976
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.261
  additional property: Liveness
    type: PropertyValue
    value: 0.114
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.217
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.979
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DEA807101401
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960327
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T00:26:26+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807101401
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960327
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960327
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T00:26:26+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

Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 6, Chorale. "Menschen, glaubt doch dieser Gnade"
type: MusicRecording
duration: PT4M0S
duration ms: 240026
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Paul Esswood
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 2
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfd5b7af693803fec1d9a573f906c1e62476a852d74461b5ab2e77a80e12395. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEA807101406.
  date published: 2026-07-31T17:29:52Z
audio: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 6, Chorale. "Menschen, glaubt doch dieser Gnade"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.39
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.302
  additional property: Energy
    type: PropertyValue
    value: 0.106
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.049
  additional property: Liveness
    type: PropertyValue
    value: 0.294
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.114
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.266
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DEA807101406
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960427
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T15:59:18+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807101406
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960427
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960427
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:59:18+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

Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 2, Aria. "Was willst du dich, mein Geist, entsetzen"
type: MusicRecording
duration: PT4M10S
duration ms: 250466
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Kurt Equiluz
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 2
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cacb9e775995bf9834c74dadf2dfdedf36d49100bb7813946683bc92ccb9f25. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEA807101202.
  date published: 2026-07-31T15:20:15Z
audio: Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 2, Aria. "Was willst du dich, mein Geist, entsetzen"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.586
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.324
  additional property: Energy
    type: PropertyValue
    value: 0.131
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.33
  additional property: Liveness
    type: PropertyValue
    value: 0.187
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.448
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.57
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DEA807101202
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960418
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T15:20:15+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807101202
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15+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

Bach, JS: Es ist das Heil uns kommen her, BWV 9: No. 3, Aria. "Wir waren schon zu tief gesunken"
type: MusicRecording
duration: PT7M21S
duration ms: 441506
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Kurt Equiluz
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 2
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4deb33d2128bb8321f6920c9306d9d996bc987409fdfd0c18e0b0afd7a472. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEA807102903.
  date published: 2026-07-31T09:50:11Z
audio: Bach, JS: Es ist das Heil uns kommen her, BWV 9: No. 3, Aria. "Wir waren schon zu tief gesunken"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.572
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.258
  additional property: Energy
    type: PropertyValue
    value: 0.062
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.032
  additional property: Liveness
    type: PropertyValue
    value: 0.137
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.067
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.081
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DEA807102903
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960381
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T09:50:11+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807102903
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960381
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960381
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:50:11+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

Bach, JS: Es ist das Heil uns kommen her, BWV 9: No. 5, Duett. "Herr, du siehst statt guter Werke"
type: MusicRecording
duration: PT7M25S
duration ms: 445106
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Paul Esswood
by artist: Soloist of the Regensburg Cathedral Choir
in album: Bach: Sacred Cantatas, BWV 7 - 9
  type: MusicAlbum
  date published: 1994-01-01
popularity: 1
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4987c4377656b1c63ea5f18853b561fa43dc4a2f0da5f1858c4b6ac809c4793b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEA807102905.
  date published: 2026-07-31T15:59:18Z
audio: Bach, JS: Es ist das Heil uns kommen her, BWV 9: No. 5, Duett. "Herr, du siehst statt guter Werke"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 92.606
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.34
  additional property: Energy
    type: PropertyValue
    value: 0.103
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.536
  additional property: Liveness
    type: PropertyValue
    value: 0.14
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.301
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.748
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: DEA807102905
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960427
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T15:59:18+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807102905
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960427
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960427
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:59:18+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

Bach, JS: Meine Seel erhebt den Herren, BWV 10: No. 1, Choral Fantasie. "Meine Seel erhebt den Herren"
type: MusicRecording
duration: PT4M2S
duration ms: 242533
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Choir of King's College, Cambridge
by artist: Leonhardt-Consort
in album: Bach: Sacred Cantatas, BWV 10 - 12
  type: MusicAlbum
  date published: 1994-01-01
popularity: 1
genre: classical
genre: classical-piano
isrc code: DEA807103001
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:19:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdfe0c0183080f7259719d0cdc2a0ef2fdf3f0c40ed126e8dce6816e3e05658ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807103001
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05+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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957073
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-07T18:39:05+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe0c0183080f7259719d0cdc2a0ef2fdf3f0c40ed126e8dce6816e3e05658ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA807103001.
  date published: 2026-07-08T03:20:19Z
audio: Bach, JS: Meine Seel erhebt den Herren, BWV 10: No. 1, Choral Fantasie. "Meine Seel erhebt den Herren"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.988
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.423
  additional property: Energy
    type: PropertyValue
    value: 0.31
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.464
  additional property: Liveness
    type: PropertyValue
    value: 0.21
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.595
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.102
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Bach, JS: Meine Seel erhebt den Herren, BWV 10: No. 2, Aria. "Herr, der du stark und mächtig bist"
type: MusicRecording
duration: PT7M27S
duration ms: 447800
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
by artist: Soloist of the Regensburg Cathedral Choir
in album: Bach: Sacred Cantatas, BWV 10 - 12
  type: MusicAlbum
  date published: 1994-01-01
popularity: 2
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34123b5778d3d65add695a947eb2aeb99c996bb3f71ec229b9e19c5da1171dd2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEA807103002.
  date published: 2026-07-31T18:48:12Z
audio: Bach, JS: Meine Seel erhebt den Herren, BWV 10: No. 2, Aria. "Herr, der du stark und mächtig bist"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.43
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.53
  additional property: Energy
    type: PropertyValue
    value: 0.146
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.949
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.007
  additional property: Liveness
    type: PropertyValue
    value: 0.126
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.55
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.33
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: DEA807103002
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960144
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T21:09:47+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807103002
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47+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

Bach, JS: Weinen, Klagen, Sorgen, Zagen, BWV 12: No. 1, Sinfonia
type: MusicRecording
duration: PT2M28S
duration ms: 148760
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
by artist: Leonhardt-Consort
in album: Bach: Sacred Cantatas, BWV 10 - 12
  type: MusicAlbum
  date published: 1994-01-01
popularity: 2
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04208d6c43c611eedd0340fe38b5813cf7efab3d735f780357223e6c437d82bb. 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/DEA807200701.
  date published: 2026-07-31T02:19:15Z
audio: Bach, JS: Weinen, Klagen, Sorgen, Zagen, BWV 12: No. 1, Sinfonia
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 92.425
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.212
  additional property: Energy
    type: PropertyValue
    value: 0.127
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.97
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.936
  additional property: Liveness
    type: PropertyValue
    value: 0.229
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.046
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.35
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DEA807200701
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960199
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T02:30:29+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA807200701
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960199
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T02:30:29+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

Bach: Notebook for Wilhelm Friedemann Bach: No. 8, Prelude in F Major, BWV 927
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duration: PT0M43S
duration ms: 43560
explicit: false
by artist: Johann Sebastian Bach
by artist: Gustav Leonhardt
in album: Scenes from Childhood
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  date published: 2024-12-26
popularity: 18
genre: classical
genre: classical-piano
isrc code: DEA806417200
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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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
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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Bach: Notebook for Wilhelm Friedemann Bach: No. 8, Prelude in F Major, BWV 927
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Ode “Welcome to all pleasures
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duration: PT4M40S
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by artist: Henry Purcell
by artist: Alfred Deller
by artist: Gustav Leonhardt
by artist: Leonhardt Baroque Ensemble
in album: Music of Henry Purcell
  type: MusicAlbum
  date published: 2008-09-02
popularity: 8
genre: classical
genre: choral
isrc code: USX760801019
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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
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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Ode “Welcome to all pleasures
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Come ye sons of art, 1694, ode for Queen Mary (excerpts)
type: MusicRecording
duration: PT8M57S
duration ms: 537813
explicit: false
by artist: David Wilson-Johnson
by artist: Christopher Robson
by artist: Orchestra of the Age of Enlightenment
by artist: Gustav Leonhardt
by artist: Julia Gooding
by artist: James Bowman
by artist: Choir Of The Age Of Enlightenment
in album: 100 Best Baroque
  type: MusicAlbum
  date published: 2006
popularity: 4
genre: classical-bass
isrc code: GBAYC9105759
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Come ye sons of art, 1694, ode for Queen Mary (excerpts)
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Schweigt stille, plaudert nicht, BWV 211 "Coffee Cantata": 8. Aria: "Heute noch, lieber Vater, tut es doch"
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duration: PT6M44S
duration ms: 404426
explicit: false
by artist: Johann Sebastian Bach
by artist: Barbara Bonney
by artist: Orchestra of the Age of Enlightenment
by artist: Gustav Leonhardt
in album: Barbara Bonney - The Radiant Voice of Barbara Bonney
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popularity: 3
genre: classical
genre: classical-piano
isrc code: NLA509404008
additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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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
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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Schweigt stille, plaudert nicht, BWV 211 "Coffee Cantata": 8. Aria: "Heute noch, lieber Vater, tut es doch"
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Le Bourgeois Gentilhomme - Comédie-Ballet, LWV 43: Ouverture
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duration: PT3M1S
duration ms: 181733
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by artist: Gustav Leonhardt
by artist: La Petite Bande
by artist: Sigiswald Kuijken
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popularity: 2
genre: classical
genre: french-opera
genre: early-music
genre: baroque
genre: french-baroque
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Le Bourgeois Gentilhomme - Comédie-Ballet, LWV 43: Ouverture
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Bull's Goodnight, MB 143
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by artist: Gustav Leonhardt
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popularity: 3
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  date published: 2026-07-30T12:06:10Z
audio: Bull's Goodnight, MB 143
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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

Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Recorder Concerto in C Major, RV 443: II. Largo
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by artist: Amsterdam Chamber Orchestra
by artist: André Rieu
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popularity: 2
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audio: Recorder Concerto in C Major, RV 443: II. Largo
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J.S. Bach: Secular Cantatas Nos. 208 & 215
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date published: 1998-10-21

J.S. Bach: Secular Cantatas BWV 173a & 201
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date published: 1996-10-01

Bach, J.S.: Easter Oratorio/Ascension Oratorio (Audior)
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track: Kommt, eilet und laufet (Easter Oratorio), BWV 249: 1a. Adagio

Elizabethan Organ Music
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date published: 2022-06-24

Purcell Edition Volume 3 : Odes, Anthems & Ceremonial Music
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date published: 2009-04-01

Bach: Sacred Cantatas, BWV 7 - 9
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track: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 2, Aria. "Merkt und hört, ihr Menschenkinder"
track: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 4, Aria. "Des Vaters Stimme ließ sich hören"
track: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 5, Rezitative. "Als Jesus dort nach seinen Leiden"
track: Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 1, Chor. "Liebster Gott, wenn werd ich sterben?"
track: Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 3, Rezitativ. "Zwar fühlt mein schwaches Herz"
track: Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 4, Aria. "Doch weichet, ihr tollen, vergeblichen Sorgen!"
track: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 1, Chor. "Christ unser Herr zum Jardan kam"
track: Bach, JS: Christ unser Herr zum Jordan kam, BWV 7: No. 6, Chorale. "Menschen, glaubt doch dieser Gnade"
track: Bach, JS: Liebster Gott, wann werd ich sterben, BWV 8: No. 2, Aria. "Was willst du dich, mein Geist, entsetzen"
track: Bach, JS: Es ist das Heil uns kommen her, BWV 9: No. 3, Aria. "Wir waren schon zu tief gesunken"
track: Bach, JS: Es ist das Heil uns kommen her, BWV 9: No. 5, Duett. "Herr, du siehst statt guter Werke"

Bach: Sacred Cantatas, BWV 10 - 12
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track: Bach, JS: Lobet Gott in seinen Reichen, BWV 11 "Himmelfahrtsoratorium": No. 11, Choral. "Wenn soll es doch geschehen“
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    date published: 2026-07-08T03:22:41Z
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track: Bach, JS: Meine Seel erhebt den Herren, BWV 10: No. 2, Aria. "Herr, der du stark und mächtig bist"
track: Bach, JS: Weinen, Klagen, Sorgen, Zagen, BWV 12: No. 1, Sinfonia