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genre: medieval
popularity: 5
followers: 119
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/e0448123-a9de-4647-885a-a29ce9a6721b.ots
additional property: OTSRecordURL
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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. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e525f5296c20aca6e97d3474b344482fa4c27bab4b1d8623f747fece7712da. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0448123-a9de-4647-885a-a29ce9a6721b.json and https://artists.proofprofile.net/proofs/artist/e0448123-a9de-4647-885a-a29ce9a6721b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
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album: J. Desprez: Missas l'homme armé - Desprez Recordings, Vol. 6
  type: MusicAlbum
  date published: 2014-03-24
album: J. Desprez: Missa pange lingua & Motets - Desprez Recordings, Vol. 5
  type: MusicAlbum
  date published: 2014-03-24
  track: Appel des cloches
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    by artist: A Sei Voci
    by artist: Ensemble a Sei Voci
    by artist: Bernard Fabre-Garrus
    in album: J. Desprez: Missa pange lingua & Motets - Desprez Recordings, Vol. 5
      type: MusicAlbum
      date published: 2014-03-24
    genre: classical
    genre: early-music
    genre: renaissance
    genre: franco-flemish-school
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139900060
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T12:24:41Z
    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b13c07216c832074b059c4800f264632c76e1a00387fcb34324209eab83776. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139900060.
      date published: 2026-07-31T12:24:41Z
    audio: Appel des cloches
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  track: Plain-chant: Pange lingua
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    by artist: Josquin des Prez
    by artist: Maîtrise des Pays de Loire
    in album: J. Desprez: Missa pange lingua & Motets - Desprez Recordings, Vol. 5
      type: MusicAlbum
      date published: 2014-03-24
    genre: classical
    genre: early-music
    genre: renaissance
    genre: franco-flemish-school
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    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T02:19:15Z
    audio: Plain-chant: Pange lingua
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  track: Missa pange lingua: I. Kyrie
  track: Missa pange lingua: II. Gloria
  track: Missa pange lingua: III. Credo
  track: Missa pange lingua: V. Agnus dei
album: J. Desprez: Missa Gaudeamus & Motets à la Vierge - Desprez Recordings, Vol. 4
album: La musique au temps des castrats - Astrée Recordings
album: Le cinéma de Bach à Wagner

Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Mode Name
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Missa pange lingua: I. Kyrie
type: MusicRecording
duration: PT3M6S
duration ms: 186373
explicit: false
by artist: Josquin des Prez
by artist: A Sei Voci
by artist: Ensemble a Sei Voci
by artist: Bernard Fabre-Garrus
in album: J. Desprez: Missa pange lingua & Motets - Desprez Recordings, Vol. 5
  type: MusicAlbum
  date published: 2014-03-24
genre: classical
genre: early-music
genre: renaissance
genre: franco-flemish-school
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0959b65b2ee97b5fc44f6aa249add7cba7054e660e7937d1f2c4ad20ab1b2ec8. 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/FRZ139900350.
  date published: 2026-07-08T03:53:27Z
audio: Missa pange lingua: I. Kyrie
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Missa pange lingua: II. Gloria
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duration: PT4M33S
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by artist: Josquin des Prez
by artist: Ensemble a Sei Voci
by artist: A Sei Voci
by artist: Bernard Fabre-Garrus
in album: J. Desprez: Missa pange lingua & Motets - Desprez Recordings, Vol. 5
  type: MusicAlbum
  date published: 2014-03-24
genre: classical
genre: early-music
genre: renaissance
genre: franco-flemish-school
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additional property: CopyrightStatus
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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 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
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  date published: 2026-08-01T04:52:22Z
audio: Missa pange lingua: II. Gloria
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Missa pange lingua: III. Credo
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by artist: Bernard Fabre-Garrus
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genre: classical
genre: early-music
genre: renaissance
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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 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
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  date published: 2026-07-31T18:48:12Z
audio: Missa pange lingua: III. Credo
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Missa pange lingua: V. Agnus dei
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by artist: Ensemble a Sei Voci
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by artist: Bernard Fabre-Garrus
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genre: classical
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29358223832303803415d3d2cb26fdec50a3a5c37a200d08fb92e89dd5776251. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRZ139900400.
  date published: 2026-07-31T19:53:13Z
audio: Missa pange lingua: V. Agnus dei
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.137
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.475
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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J. Desprez: Missa Gaudeamus & Motets à la Vierge - Desprez Recordings, Vol. 4
type: MusicAlbum
date published: 2014-03-24
track: Missa Gaudeamus: V. Agnus Dei: No. 2, Agnus Dei, qui tollis peccata mundi
  type: MusicRecording
  duration: PT1M19S
  duration ms: 79440
  explicit: false
  by artist: Josquin des Prez
  by artist: Ensemble a Sei Voci
  by artist: A Sei Voci
  by artist: Bernard Fabre-Garrus
  in album: J. Desprez: Missa Gaudeamus & Motets à la Vierge - Desprez Recordings, Vol. 4
    type: MusicAlbum
    date published: 2014-03-24
  genre: classical
  genre: early-music
  genre: renaissance
  genre: franco-flemish-school
  isrc code: FRZ139700119
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x65cf6c0955ae872f7e20dda414ec787ece8b78c69852ae85f8cf9632982ba53d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960478
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960478
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139700119
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T23:30:38Z
  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 0x65cf6c0955ae872f7e20dda414ec787ece8b78c69852ae85f8cf9632982ba53d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRZ139700119.
    date published: 2026-07-31T23:30:38Z
  audio: Missa Gaudeamus: V. Agnus Dei: No. 2, Agnus Dei, qui tollis peccata mundi
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 104.714
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 6
    additional property: Danceability
      type: PropertyValue
      value: 0.299
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.046
    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0.129
    additional property: Liveness
      type: PropertyValue
      value: 0.059
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.052
    additional property: Loudness (dB)
      type: PropertyValue
      value: -31.998
    additional property: Key Name
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    additional property: Mode Name
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track: Motets à la Vierge: Recordare virgo mater: I. Prima pars
  type: MusicRecording
  duration: PT1M39S
  duration ms: 99866
  explicit: false
  by artist: Josquin des Prez
  by artist: A Sei Voci
  by artist: Ensemble a Sei Voci
  by artist: Bernard Fabre-Garrus
  in album: J. Desprez: Missa Gaudeamus & Motets à la Vierge - Desprez Recordings, Vol. 4
    type: MusicAlbum
    date published: 2014-03-24
  genre: classical
  genre: early-music
  genre: renaissance
  genre: franco-flemish-school
  isrc code: FRZ139700141
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T21:23:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x880f89c05b0fbbe4b037e9b17f4f92f339dad48e83693ad5bc92c8eafd3469ff
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  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/FRZ139700141
  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 0x880f89c05b0fbbe4b037e9b17f4f92f339dad48e83693ad5bc92c8eafd3469ff. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139700141.
    date published: 2026-07-08T03:22:41Z
  audio: Motets à la Vierge: Recordare virgo mater: I. Prima pars
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 102.234
    additional property: Musical Key
      type: PropertyValue
      value: 9
    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: 0.237
    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
      value: 0.107
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.089
    additional property: Loudness (dB)
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      value: -24.204
    additional property: Key Name
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    additional property: Mode Name
      type: PropertyValue
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track: Motets à la Vierge: Ave maris stella: I. Prima pars
  type: MusicRecording
  duration: PT3M39S
  duration ms: 219066
  explicit: false
  by artist: Josquin des Prez
  by artist: Ensemble a Sei Voci
  by artist: A Sei Voci
  by artist: Bernard Fabre-Garrus
  in album: J. Desprez: Missa Gaudeamus & Motets à la Vierge - Desprez Recordings, Vol. 4
    type: MusicAlbum
    date published: 2014-03-24
  genre: classical
  genre: early-music
  genre: renaissance
  genre: franco-flemish-school
  isrc code: FRZ139700161
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Motets à la Vierge: Ave maris stella: I. Prima pars
track: Motets à la Vierge: Ave maris stella: II. Secunda pars

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
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CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x135989acc183498bedef0f267c96cb1e8b5b729f2430ab068104680aeb627c90

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960370

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960370

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139700161

OTSTimestamp
type: PropertyValue
value: 2026-07-31T08:38:45Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135989acc183498bedef0f267c96cb1e8b5b729f2430ab068104680aeb627c90. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FRZ139700161.
date published: 2026-07-31T08:38:45Z

Motets à la Vierge: Ave maris stella: I. Prima pars
type: AudioObject
additional property: Tempo (BPM)
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  value: 103.131
additional property: Musical Key
  type: PropertyValue
  value: 9
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: 0.117
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
  type: PropertyValue
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
  type: PropertyValue
  value: -25.629
additional property: Key Name
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  value: A
additional property: Mode Name
  type: PropertyValue
  value: Minor

Motets à la Vierge: Ave maris stella: II. Secunda pars
type: MusicRecording
duration: PT2M15S
duration ms: 135333
explicit: false
by artist: Josquin des Prez
by artist: Ensemble a Sei Voci
by artist: A Sei Voci
by artist: Bernard Fabre-Garrus
in album: J. Desprez: Missa Gaudeamus & Motets à la Vierge - Desprez Recordings, Vol. 4
  type: MusicAlbum
  date published: 2014-03-24
genre: classical
genre: early-music
genre: renaissance
genre: franco-flemish-school
isrc code: FRZ139700162
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5e2243f5d86e64bf4c66a08d915fb7ffa104aeb1f3eb7d58e7056f646a0125d7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960379
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960379
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139700162
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:25:34Z
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 0x5e2243f5d86e64bf4c66a08d915fb7ffa104aeb1f3eb7d58e7056f646a0125d7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ139700162.
  date published: 2026-07-31T09:25:34Z
audio: Motets à la Vierge: Ave maris stella: II. Secunda pars
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.295
  additional property: Musical Key
    type: PropertyValue
    value: 9
  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: 0.157
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.118
  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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    value: -25.245
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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La musique au temps des castrats - Astrée Recordings
type: MusicAlbum
date published: 2014-03-24
track: Orfeo ed Euridice, Wq. 30, Act II, Scene 2: Symphonie - Arioso "Che puro ciel, che chiaro sol" (Orfeo)
  type: MusicRecording
  duration: PT6M21S
  duration ms: 381000
  explicit: false
  by artist: Christoph Willibald Gluck
  by artist: James Bowman
  by artist: La Grande Écurie et la Chambre du Roy
  by artist: Jean-Claude Malgoire
  by artist: Chœur De Chambre De Namur
  in album: La musique au temps des castrats - Astrée Recordings
    type: MusicAlbum
    date published: 2014-03-24
  genre: classical
  genre: opera
  isrc code: FRZ130893010
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-26T21:36:38+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbaa693f78ab43fd53a25b01e130c41c63044b257f358459b821e18a9e501b067
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ130893010
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xbaa693f78ab43fd53a25b01e130c41c63044b257f358459b821e18a9e501b067. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ130893010.
    date published: 2026-07-02T03:55:08Z
  audio: Orfeo ed Euridice, Wq. 30, Act II, Scene 2: Symphonie - Arioso "Che puro ciel, che chiaro sol" (Orfeo)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.183
    additional property: Musical Key
      type: PropertyValue
      value: 6
    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: 0.192
    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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track: Motezuma, RV 723, Act III, Scene 10: Aria "Dov'è la figlia" (Motezuma)
  type: MusicRecording
  duration: PT6M2S
  duration ms: 362200
  explicit: false
  by artist: Antonio Vivaldi
  by artist: Dominique Visse
  by artist: La Grande Écurie et la Chambre du Roy
  by artist: Jean-Claude Malgoire
  in album: La musique au temps des castrats - Astrée Recordings
    type: MusicAlbum
    date published: 2014-03-24
  genre: classical
  genre: early-music
  genre: baroque
  genre: concerto
  isrc code: FRZ130893020
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-06T09:26:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x077f7fb8d77bc387b359ff0bdca25c6cc16e01ac27ace5b7e9d64bf6ed783843
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 957048
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957048
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ130893020
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T14:18:56Z
  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
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  subject of: OpenTimestamps Proof of Existence
  audio: De ore prudentis (Motet for 3 Voices)
track: Dixit Dominus, RV 594: No. 8, Aria "De torrente in via"
track: Salve Regina à 3 voix pareilles, H. 23
track: Orfeo ed Euridice, Wq. 30, Act III, Scene 1: "Che faro senza Euridice ?" (Orfeo)
track: Motezuma, RV 723, Act I, Scene 2: Aria "Gl'oltraggidella sorte" (Motezuma)
track: Repleti sunt omnes (Motet for 3 Voices)
track: Nisi Dominus, RV 608: No. 9, Aria "Sicut erat" - "Amen"
track: Artaserse, Act III, Scene 1: Aria "Son qual nave ch'agitata" (Arbace)

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value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
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date published: 2026-07-30T18:23:33Z

De ore prudentis (Motet for 3 Voices)
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Dixit Dominus, RV 594: No. 8, Aria "De torrente in via"
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Dixit Dominus, RV 594: No. 8, Aria "De torrente in via"
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Salve Regina à 3 voix pareilles, H. 23
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T05:15:54Z
audio: Salve Regina à 3 voix pareilles, H. 23
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Orfeo ed Euridice, Wq. 30, Act III, Scene 1: "Che faro senza Euridice ?" (Orfeo)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
audio: Orfeo ed Euridice, Wq. 30, Act III, Scene 1: "Che faro senza Euridice ?" (Orfeo)
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Motezuma, RV 723, Act I, Scene 2: Aria "Gl'oltraggidella sorte" (Motezuma)
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
audio: Motezuma, RV 723, Act I, Scene 2: Aria "Gl'oltraggidella sorte" (Motezuma)
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Repleti sunt omnes (Motet for 3 Voices)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:06:57Z
audio: Repleti sunt omnes (Motet for 3 Voices)
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Nisi Dominus, RV 608: No. 9, Aria "Sicut erat" - "Amen"
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Artaserse, Act III, Scene 1: Aria "Son qual nave ch'agitata" (Arbace)
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Le cinéma de Bach à Wagner
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track: Melodia for Guitar 'Romance (From Jeux interdits)
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