Aafje Heynis
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genre: chamber music
description: Aafje Heynis (2 May 1924 – 16 December 2015) was a Dutch contralto. In 1961, she was awarded the Harriet Cohen International Music Award. A tea rose, hybridised by Buisman 1964, was named after her. S
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album: British Folk Songs
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  date published: 1960
album: J.S. Bach & Handel: Sacred Arias
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  track: Es ist euch gut, dass ich hingehe, BWV 108: V. Aria. Was mein Herz von dir begehrt
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      date published: 1961
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-03T08:56:35Z
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album: Bach, Handel: Airs sacrés (Stereo Version)
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album: Bach, Handel: Airs sacrés (Mono Version)
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album: Standchen
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  date published: 1967
  track: Dank Sei Dir Herr
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      date published: 1967
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-05T01:12:41Z
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album: Sacred Arias
album: Bach: Cantatas 169, 170 & Seven Sacred Songs
album: Aafje Heynis
album: Aafje Heynis - Complete Philips Recordings
album: Aafje Heynis Sings Brahms, Handel and Bach
album: Handel: Dixit Dominus; Sacred Arias
album: Songs with Organ; Brahms: Vier ernste Gesänge
track: Symphony No. 2 in C Minor "Resurrection": 5e. "O glaube, mein Herz, o glaube" (Etwas bewegter)

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Sacred Arias
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Bach: Cantatas 169, 170 & Seven Sacred Songs
type: MusicAlbum
date published: 2010-08-01

Aafje Heynis
type: MusicAlbum
date published: 2012-05-04

Aafje Heynis - Complete Philips Recordings
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track: Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 1. Aria: Vergnügte Ruh', beleibte Seelenlust
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-29T19:35:34Z
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track: Dank sei dir, Herr
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T16:07:00Z
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track: "Frondi tenere e belle" - "Ombra mai fù" [Serse - Act 1]
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track: Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 2. Rec.: Die Welt, das Sündenhaus
track: Ave Maria (arr. from Bach's Prelude No.1 BWV 846)
track: Aria: Bist du bei mir, BWV 508 (Arr. for Organ)
track: Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 3. Aria: Wie jammern mich doch die verkehrten Herzen
track: Panis Angelicus
track: Mass in B Minor, BWV 232 / Agnus Dei: Agnus Dei
track: Messiah, HWV 56 / Pt. 2: No. 23: He was despised
track: Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 4. Rec.: Wer sollte sich demnach wohl hier
track: Ave Maria, "Ellens Gesang III", D839
track: Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 5. Aria: Mir ekelt mehr zu leben
track: St. Matthew Passion, BWV 244 / Part Two: No. 39: Erbarme dich
track: Johannes-Passion, BWV 245 / Part Two: No. 30: Es ist vollbracht
track: Es ist euch gut, dass ich hingehe, Cantata BWV 108: No. 5: Was mein Herz von dir begehrt
track: Cantata No.34 "O ewiges Feuer, O Ursprung der Liebe", BWV34: 3. Aria: "Wohl euch, ihr auserwählten Seelen"
track: Cantata ‘Gott soll allein mein Herze haben’, BWV 169: 1. Sinfonia
track: Cantata ‘Gott soll allein mein Herze haben’, BWV 169: 2. Arioso

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date published: 2026-07-30T05:43:45Z

"Frondi tenere e belle" - "Ombra mai fù" [Serse - Act 1]
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Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 2. Rec.: Die Welt, das Sündenhaus
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  date published: 2026-07-31T08:38:45Z
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Ave Maria (arr. from Bach's Prelude No.1 BWV 846)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T09:09:19Z
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Aria: Bist du bei mir, BWV 508 (Arr. for Organ)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 3. Aria: Wie jammern mich doch die verkehrten Herzen
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  date published: 2026-07-31T00:26:26Z
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Panis Angelicus
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Mass in B Minor, BWV 232 / Agnus Dei: Agnus Dei
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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    value: 0.978
  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.711
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
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Messiah, HWV 56 / Pt. 2: No. 23: He was despised
type: MusicRecording
duration: PT11M13S
duration ms: 673906
explicit: false
by artist: Aafje Heynis
in album: Aafje Heynis - Complete Philips Recordings
  type: MusicAlbum
  date published: 2014-01-01
genre: chamber music
isrc code: NLA506100014
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x41ea2a32910216087572373be7bea9f295a3f3b5b8dcc8efe1095febe99118f6
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506100014
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ea2a32910216087572373be7bea9f295a3f3b5b8dcc8efe1095febe99118f6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506100014 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Messiah, HWV 56 / Pt. 2: No. 23: He was despised
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 4. Rec.: Wer sollte sich demnach wohl hier
type: MusicRecording
duration: PT1M18S
duration ms: 78720
explicit: false
by artist: Aafje Heynis
in album: Aafje Heynis - Complete Philips Recordings
  type: MusicAlbum
  date published: 2014-01-01
genre: chamber music
isrc code: NLA506000030
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x6c26d34bdb8a6426634c1a1ff4b4d33ade81937c45f74be51cea3d6ddb973bac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506000030
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c26d34bdb8a6426634c1a1ff4b4d33ade81937c45f74be51cea3d6ddb973bac. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506000030 — a six-check JSON result.
  date published: 2026-07-31T08:26:41Z
audio: Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 4. Rec.: Wer sollte sich demnach wohl hier
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 117.011
  additional property: Musical Key
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    value: 11
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.319
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.139
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.267
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.146
  additional property: Key Name
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  additional property: Mode Name
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Ave Maria, "Ellens Gesang III", D839
type: MusicRecording
duration: PT4M26S
duration ms: 266533
explicit: false
by artist: Aafje Heynis
in album: Aafje Heynis - Complete Philips Recordings
  type: MusicAlbum
  date published: 2014-01-01
genre: chamber music
isrc code: NLE070400106
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T02:49:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91344216ca9ed4376e542e60383ef644674698cba5b2c210a461c74c3b9e410b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960340
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960340
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE070400106
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T03:15:04Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91344216ca9ed4376e542e60383ef644674698cba5b2c210a461c74c3b9e410b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE070400106 — a six-check JSON result.
  date published: 2026-07-31T03:15:04Z
audio: Ave Maria, "Ellens Gesang III", D839
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 171.743
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.216
  additional property: Energy
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    value: 0.078
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
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    value: 0.18
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.626
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 5. Aria: Mir ekelt mehr zu leben
type: MusicRecording
duration: PT7M55S
duration ms: 475986
explicit: false
by artist: Aafje Heynis
in album: Aafje Heynis - Complete Philips Recordings
  type: MusicAlbum
  date published: 2014-01-01
genre: chamber music
isrc code: NLA506000031
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T07:02:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x491e62a267e3d27eb8160087541a4f553c7b15df46caf7ba157cb9dbe38424f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506000031
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491e62a267e3d27eb8160087541a4f553c7b15df46caf7ba157cb9dbe38424f3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506000031 — a six-check JSON result.
  date published: 2026-07-31T08:26:41Z
audio: Cantata, ‘Vernügte Ruh, beliebte Seelenlust’, BWV 170: 5. Aria: Mir ekelt mehr zu leben
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.297
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.305
  additional property: Energy
    type: PropertyValue
    value: 0.125
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.261
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.422
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
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St. Matthew Passion, BWV 244 / Part Two: No. 39: Erbarme dich
type: MusicRecording
duration: PT7M20S
duration ms: 440786
explicit: false
by artist: Aafje Heynis
in album: Aafje Heynis - Complete Philips Recordings
  type: MusicAlbum
  date published: 2014-01-01
genre: chamber music
isrc code: NLA506100010
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T17:22:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x89f85dde95b69d8123ad706ae5b6f738eacf1c6eb7d163d67d9bd986f17b42ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506100010
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f85dde95b69d8123ad706ae5b6f738eacf1c6eb7d163d67d9bd986f17b42ee. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506100010 — a six-check JSON result.
  date published: 2026-07-29T19:35:34Z
audio: St. Matthew Passion, BWV 244 / Part Two: No. 39: Erbarme dich
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.172
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.231
  additional property: Energy
    type: PropertyValue
    value: 0.209
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.083
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.694
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Johannes-Passion, BWV 245 / Part Two: No. 30: Es ist vollbracht
type: MusicRecording
duration: PT5M39S
duration ms: 339440
explicit: false
by artist: Aafje Heynis
in album: Aafje Heynis - Complete Philips Recordings
  type: MusicAlbum
  date published: 2014-01-01
genre: chamber music
isrc code: NLA506100012
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T18:24:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xac2cee5029ffe6533a8054b8fad41f8be459b6e21f35f90f609c9d793f42fed9
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960294
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506100012
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:46:00Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2cee5029ffe6533a8054b8fad41f8be459b6e21f35f90f609c9d793f42fed9. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506100012 — a six-check JSON result.
  date published: 2026-07-30T18:46:00Z
audio: Johannes-Passion, BWV 245 / Part Two: No. 30: Es ist vollbracht
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.172
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.067
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.931
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Es ist euch gut, dass ich hingehe, Cantata BWV 108: No. 5: Was mein Herz von dir begehrt
type: MusicRecording
duration: PT4M2S
duration ms: 242733
explicit: false
by artist: Aafje Heynis
in album: Aafje Heynis - Complete Philips Recordings
  type: MusicAlbum
  date published: 2014-01-01
genre: chamber music
isrc code: NLA506000035
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T04:58:52+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506000035
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 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
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Cantata No.34 "O ewiges Feuer, O Ursprung der Liebe", BWV34: 3. Aria: "Wohl euch, ihr auserwählten Seelen"
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  date published: 2026-07-31T08:26:41Z
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Cantata ‘Gott soll allein mein Herze haben’, BWV 169: 1. Sinfonia
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Cantata ‘Gott soll allein mein Herze haben’, BWV 169: 2. Arioso
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Aafje Heynis Sings Brahms, Handel and Bach
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Handel: Dixit Dominus; Sacred Arias
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Songs with Organ; Brahms: Vier ernste Gesänge
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Symphony No. 2 in C Minor "Resurrection": 5e. "O glaube, mein Herz, o glaube" (Etwas bewegter)
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