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Wiegenlied "Guten Abend, gut Nacht" Op. 49, No. 4
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Lieder (Duette), Op. 63: I. Ich wollt, meine Liebe ergösse sich
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Lieder (Duette), Op. 63: IV. Herbstlied
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Wenn ich ein Vöglein wär, Op. 43, No. 1
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Lieder (Duette), Op. 63: II. Abschiedslied der Zugvögel
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Le nozze di Figaro, K. 492, Atto II Scena 2: Recitativo. Quanto duolmi, Susanna (La Contessa, Susanna, Cherubino)
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  date published: 2026-07-02T03:55:08Z
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Le nozze di Figaro, K. 492, Atto II Scena 2: No. 12, Arietta. Voi che sapete (Cherubino)
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Le nozze di Figaro, K. 492, Atto II Scena 2: Recitativo. Bravo! che bella voce! (La Contessa, Susanna, Cherubino)
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Le nozze di Figaro, K. 492, Atto II Scena 2: Recitativo. Quante buffonerie! (La Contessa, Susanna, Cherubino, il Conte)
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Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: Recitativo. Queste sono, Madama (Barbarina, la Contessa, Susanna, Antonio, il Conte, Cherubino)
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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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0xb28298df988d95982d8be92d2a70c26cb269872e19417321403fea035db074fe. 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/FRZ140310080.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: Recitativo. Queste sono, Madama (Barbarina, la Contessa, Susanna, Antonio, il Conte, Cherubino)
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  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.599
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.61
  additional property: Energy
    type: PropertyValue
    value: 0.207
  additional property: Speechiness
    type: PropertyValue
    value: 0.534
  additional property: Acousticness
    type: PropertyValue
    value: 0.948
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.673
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.376
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.302
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto I Scena 5: Recitativo. Va là, vecchia pedante (Susanna, Cherubino)
type: MusicRecording
duration: PT1M51S
duration ms: 111600
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: René Jacobs
by artist: Concerto Köln
by artist: Patrizia Ciofi
by artist: Angelika Kirchschlager
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308110
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T12:26:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a3ffe7f18f9b2d8247cd74c1786ca3d23658df7b3936a276bc887260fd99ee9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308110
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
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: 953528
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T15:41:10+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 0x7a3ffe7f18f9b2d8247cd74c1786ca3d23658df7b3936a276bc887260fd99ee9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRZ140308110.
  date published: 2026-06-13T15:41:10Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 5: Recitativo. Va là, vecchia pedante (Susanna, Cherubino)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.671
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.573
  additional property: Energy
    type: PropertyValue
    value: 0.099
  additional property: Speechiness
    type: PropertyValue
    value: 0.147
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.376
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.36
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.354
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le nozze di Figaro, K. 492, Atto II Scena 4: No. 15, Duettino. Aprite, presto, aprite (Susanna, Cherubino)
type: MusicRecording
duration: PT1M0S
duration ms: 60400
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Concerto Köln
by artist: Patrizia Ciofi
by artist: René Jacobs
by artist: Angelika Kirchschlager
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140309110
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T17:09:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfb2b8a8e12a978f36b7f6d27ea64291cb94dde4fe969b4ba44e65b451e11eed6
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/FRZ140309110
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
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: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+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 0xfb2b8a8e12a978f36b7f6d27ea64291cb94dde4fe969b4ba44e65b451e11eed6. 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/FRZ140309110.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto II Scena 4: No. 15, Duettino. Aprite, presto, aprite (Susanna, Cherubino)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.329
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.678
  additional property: Energy
    type: PropertyValue
    value: 0.254
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.872
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.425
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.711
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.736
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le nozze di Figaro, K. 492, Atto I Scena 5: No. 6, Aria. Non so più cosa son (Cherubino)
type: MusicRecording
duration: PT2M51S
duration ms: 171733
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Angelika Kirchschlager
by artist: René Jacobs
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308120
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T18:19:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdc2ce33e3da871d7c11b10b837bebc6c1ef0893894cb15c1c333dc9667dd57a1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308120
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+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 0xdc2ce33e3da871d7c11b10b837bebc6c1ef0893894cb15c1c333dc9667dd57a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308120.
  date published: 2026-06-13T13:32:09Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 5: No. 6, Aria. Non so più cosa son (Cherubino)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.885
  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: 0.342
  additional property: Energy
    type: PropertyValue
    value: 0.129
  additional property: Speechiness
    type: PropertyValue
    value: 0.147
  additional property: Acousticness
    type: PropertyValue
    value: 0.946
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.103
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.603
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: Recitativo. Ah, son perduto! (Cherubino, Susanna, il Conte, Basilio)
type: MusicRecording
duration: PT3M43S
duration ms: 223600
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Angelika Kirchschlager
by artist: René Jacobs
by artist: Concerto Köln
by artist: Simon Keenlyside
by artist: Patrizia Ciofi
by artist: Kobie Van Rensburg
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308130
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-17T04:31:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x285e0d7078a17e0371cf4e1b2cd567fef26a3d108737a257ad649c54d661e3cd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954130
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954130
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308130
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:07:14Z
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: 954130
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-17T19:07:14+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 0x285e0d7078a17e0371cf4e1b2cd567fef26a3d108737a257ad649c54d661e3cd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRZ140308130.
  date published: 2026-06-17T19:07:14Z
audio: Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: Recitativo. Ah, son perduto! (Cherubino, Susanna, il Conte, Basilio)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.988
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.518
  additional property: Energy
    type: PropertyValue
    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.333
  additional property: Acousticness
    type: PropertyValue
    value: 0.956
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.283
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.327
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.112
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: Recitativo. Basilio, in traccia tosto (Il Conte, Susanna, Cherubino, Basilio)
type: MusicRecording
duration: PT1M2S
duration ms: 62266
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Concerto Köln
by artist: Angelika Kirchschlager
by artist: Kobie Van Rensburg
by artist: Patrizia Ciofi
by artist: René Jacobs
by artist: Simon Keenlyside
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308150
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T17:49:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf0f8f05a8c392d8309449be89b04a50b1ae7988ae0c4ea8e9ad4c2dac219b200
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308150
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+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 0xf0f8f05a8c392d8309449be89b04a50b1ae7988ae0c4ea8e9ad4c2dac219b200. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308150.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: Recitativo. Basilio, in traccia tosto (Il Conte, Susanna, Cherubino, Basilio)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.014
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.604
  additional property: Energy
    type: PropertyValue
    value: 0.149
  additional property: Speechiness
    type: PropertyValue
    value: 0.48
  additional property: Acousticness
    type: PropertyValue
    value: 0.951
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.291
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.493
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.287
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto II Scene 10 - 11: Ah, signor... signor (Antonio, il Conte, Susanna, la Contessa, Figaro)
type: MusicRecording
duration: PT5M38S
duration ms: 338533
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Véronique Gens
by artist: Simon Keenlyside
by artist: René Jacobs
by artist: Angelika Kirchschlager
by artist: Concerto Köln
by artist: Patrizia Ciofi
by artist: Antonio Abete
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140309160
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T17:45:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7290156064e501da95717c71a43010bd995b2ca3aae94e942ecd9d69f269eda3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309160
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+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 0x7290156064e501da95717c71a43010bd995b2ca3aae94e942ecd9d69f269eda3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309160.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto II Scene 10 - 11: Ah, signor... signor (Antonio, il Conte, Susanna, la Contessa, Figaro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.746
  additional property: Musical Key
    type: PropertyValue
    value: 10
  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: 0.22
  additional property: Speechiness
    type: PropertyValue
    value: 0.134
  additional property: Acousticness
    type: PropertyValue
    value: 0.951
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.378
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.279
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.815
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto II Scena 10 - 11: Voi signor, che giusto siete (Marcellina, Basilio, Bartolo, il Conte, Susanna, la Contessa, Figaro)
type: MusicRecording
duration: PT4M10S
duration ms: 250133
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Simon Keenlyside
by artist: Marie McLaughlin
by artist: Véronique Gens
by artist: René Jacobs
by artist: Kobie Van Rensburg
by artist: Angelika Kirchschlager
by artist: Antonio Abete
by artist: Patrizia Ciofi
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140309170
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T17:45:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6f8f2a31e2f95b075df257821348fddad4249fbe76bee5e4e723cf761308769b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309170
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+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 0x6f8f2a31e2f95b075df257821348fddad4249fbe76bee5e4e723cf761308769b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309170.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto II Scena 10 - 11: Voi signor, che giusto siete (Marcellina, Basilio, Bartolo, il Conte, Susanna, la Contessa, Figaro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.563
  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: 0.429
  additional property: Energy
    type: PropertyValue
    value: 0.364
  additional property: Speechiness
    type: PropertyValue
    value: 0.131
  additional property: Acousticness
    type: PropertyValue
    value: 0.934
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.018
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.398
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.215
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto I Scena 8: Recitativo. Evviva! (Figaro, Susanna, Basilio, Cherubino, il Conte)
type: MusicRecording
duration: PT1M16S
duration ms: 76400
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Angelika Kirchschlager
by artist: René Jacobs
by artist: Lorenzo Regazzo
by artist: Simon Keenlyside
by artist: Patrizia Ciofi
by artist: Kobie Van Rensburg
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308190
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T05:46:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x34b49cfda56614b95c43208a7efc6252f594f468a952bab069cb7fe55d072638
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/FRZ140308190
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
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: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+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 0x34b49cfda56614b95c43208a7efc6252f594f468a952bab069cb7fe55d072638. 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/FRZ140308190.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 8: Recitativo. Evviva! (Figaro, Susanna, Basilio, Cherubino, il Conte)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.645
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.603
  additional property: Energy
    type: PropertyValue
    value: 0.231
  additional property: Speechiness
    type: PropertyValue
    value: 0.462
  additional property: Acousticness
    type: PropertyValue
    value: 0.96
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.693
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.432
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.719
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ave Maria - Caccini
type: MusicRecording
duration: PT3M52S
duration ms: 232000
explicit: false
by artist: Giulio Caccini
by artist: Angelika Kirchschlager
by artist: Robert Lehrbaumer
in album: Orgel-Liederreise
  type: MusicAlbum
  date published: 2014-09-18
genre: opera
isrc code: ATP131400915
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T02:19:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6aaf4c401cca19146eac39f604b79683ba16a962e9c41755b98e7853a7275db8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATP131400915
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0x6aaf4c401cca19146eac39f604b79683ba16a962e9c41755b98e7853a7275db8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ATP131400915.
  date published: 2026-07-02T05:09:12Z
audio: Ave Maria - Caccini
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.577
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.214
  additional property: Energy
    type: PropertyValue
    value: 0.057
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.915
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.125
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.035
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.816
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die Csardasfürstin: Tanzen möcht' ich
type: MusicRecording
duration: PT3M32S
duration ms: 212240
explicit: false
by artist: Emmerich Kálmán
by artist: Angelika Kirchschlager
by artist: Simon Keenlyside
by artist: Alfred Eschwe
by artist: Tonkünstler-Orchester
in album: My Heart Alone
  type: MusicAlbum
  date published: 2008-04-10
genre: fado
isrc code: DEE860700874
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T03:42:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7008ea28b314da6141ffbba337779fc6fcdc62f84e1b1f773e0e404570da194b
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/DEE860700874
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
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: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+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 0x7008ea28b314da6141ffbba337779fc6fcdc62f84e1b1f773e0e404570da194b. 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/DEE860700874.
  date published: 2026-07-02T03:55:08Z
audio: Die Csardasfürstin: Tanzen möcht' ich
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.515
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.37
  additional property: Energy
    type: PropertyValue
    value: 0.176
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.25
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.414
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Fledermaus: Ich lade gern mir Gäste ein
type: MusicRecording
duration: PT2M55S
duration ms: 175586
explicit: false
by artist: Johann Strauss II
by artist: Angelika Kirchschlager
by artist: Alfred Eschwe
by artist: Tonkünstler-Orchester
in album: My Heart Alone
  type: MusicAlbum
  date published: 2008-04-10
isrc code: DEE860700882
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T09:47:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1079993672e441170e5df3032b09131273137195bdd3511e3f0d993cb7041181
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700882
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0x1079993672e441170e5df3032b09131273137195bdd3511e3f0d993cb7041181. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEE860700882.
  date published: 2026-07-02T05:09:12Z
audio: Die Fledermaus: Ich lade gern mir Gäste ein
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.582
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.496
  additional property: Energy
    type: PropertyValue
    value: 0.057
  additional property: Speechiness
    type: PropertyValue
    value: 0.066
  additional property: Acousticness
    type: PropertyValue
    value: 0.947
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.44
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.409
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Liveness
type: PropertyValue
value: 0.101

Valence (Positivity)
type: PropertyValue
value: 0.593

Loudness (dB)
type: PropertyValue
value: -15.598

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Hopp, hopp, hopp
type: MusicRecording
duration: PT1M9S
duration ms: 69013
explicit: false
by artist: SingsalaSing, Kinderchor der Landesakademie, Ochsenhausen
by artist: SingsalaSing, Ensemble der Landesakademie, Ochsenhausen
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-01-14
isrc code: DEB111103802
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T03:37:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x67f27a6fabaa5b732e265ddf52a737e70685e33a64226e5ff2364e1577c134f1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111103802
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f27a6fabaa5b732e265ddf52a737e70685e33a64226e5ff2364e1577c134f1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEB111103802.
  date published: 2026-07-06T06:56:49Z
audio: Hopp, hopp, hopp
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.565
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.758
  additional property: Energy
    type: PropertyValue
    value: 0.33
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.864
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.947
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.247
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ein Mann, der sich Kolumbus nannt
type: MusicRecording
duration: PT3M3S
duration ms: 183866
explicit: false
by artist: Tübinger Neckarschwalben
by artist: Klaus Wagenleiter und Freunde
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-01-14
isrc code: DEB111103806
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T06:15:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3ad8d91ddb002ce29be6fd2e691a14508b2ad689044e69a63894562d7879cbf5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956894
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956894
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111103806
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T07:53:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad8d91ddb002ce29be6fd2e691a14508b2ad689044e69a63894562d7879cbf5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEB111103806.
  date published: 2026-07-06T07:53:57Z
audio: Ein Mann, der sich Kolumbus nannt
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 169.636
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.666
  additional property: Energy
    type: PropertyValue
    value: 0.419
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.73
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.036
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.962
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.228
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Wenn die wilden Winde stürmen
type: MusicRecording
duration: PT3M27S
duration ms: 207986
explicit: false
by artist: Wolfgang König
by artist: Nachwuchs des Cross Over Jugendchors
by artist: Alban Peters
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-01-14
genre: children-s-music
isrc code: DEB111103807
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T07:52:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeeac53a976545450bcaea631da158a1a737a79454e944c58331e4d41f2214f9f
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/DEB111103807
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeac53a976545450bcaea631da158a1a737a79454e944c58331e4d41f2214f9f. 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/DEB111103807.
  date published: 2026-07-02T03:55:08Z
audio: Wenn die wilden Winde stürmen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 150.541
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.46
  additional property: Energy
    type: PropertyValue
    value: 0.223
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.948
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.008
  additional property: Liveness
    type: PropertyValue
    value: 0.279
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.281
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.854
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

A B C, die Katze lief im Schnee
type: MusicRecording
duration: PT0M42S
duration ms: 42786
explicit: false
by artist: Julian Pregardien
by artist: Götz Payer
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-01-14
isrc code: DEB111103810
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:49:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc63a94447413451904f813fddf38b6aee47e108894d77c7dba3b2511909732f7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957020
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957020
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111103810
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T09:18:01Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63a94447413451904f813fddf38b6aee47e108894d77c7dba3b2511909732f7. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEB111103810.
  date published: 2026-07-07T09:18:01Z
audio: A B C, die Katze lief im Schnee
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.462
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.6
  additional property: Energy
    type: PropertyValue
    value: 0.227
  additional property: Speechiness
    type: PropertyValue
    value: 0.119
  additional property: Acousticness
    type: PropertyValue
    value: 0.967
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.144
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.831
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.51
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Bei meiner Tante Josefine
type: MusicRecording
duration: PT2M32S
duration ms: 152866
explicit: false
by artist: Peter Schindler
by artist: Tübinger Neckarschwalben
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-01-14
isrc code: DEB111103812
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:21:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x80785d9ad76c6eacda93212841b48dade65eed5c520261939566f91a399de225
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957819
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957819
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111103812
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-13T07:53:33Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80785d9ad76c6eacda93212841b48dade65eed5c520261939566f91a399de225. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEB111103812.
  date published: 2026-07-13T07:53:33Z
audio: Bei meiner Tante Josefine
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.595
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.636
  additional property: Energy
    type: PropertyValue
    value: 0.255
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.974
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.187
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.875
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.381
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sankt Martin
type: MusicRecording
duration: PT1M24S
duration ms: 84040
explicit: false
by artist: Mädchenkantorei Domkirche St. Eberhard, Stuttgart
by artist: Sabine Sauer
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-01-14
isrc code: DEB111103820
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:07:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07951d4e8aeb1dab006bc3fd2c06252c29fa8679bd760242a0aa19afd3468182
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/DEB111103820
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07951d4e8aeb1dab006bc3fd2c06252c29fa8679bd760242a0aa19afd3468182. 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/DEB111103820.
  date published: 2026-07-08T03:20:19Z
audio: Sankt Martin
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.647
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.439
  additional property: Energy
    type: PropertyValue
    value: 0.204
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.082
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.586
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.774
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Schneeflöckchen, Weißröckchen
type: MusicRecording
duration: PT1M10S
duration ms: 70640
explicit: false
by artist: Christoph Prégardien
by artist: Juliane Ruf
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-01-14
genre: choral
genre: requiem
isrc code: DEB111103829
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:48:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc89f017e3363fe76478ce37f82ef85ec85aca068d84b2bc22a8612b0e34c9484
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/DEB111103829
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89f017e3363fe76478ce37f82ef85ec85aca068d84b2bc22a8612b0e34c9484. 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/DEB111103829.
  date published: 2026-07-08T03:20:19Z
audio: Schneeflöckchen, Weißröckchen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.874
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.477
  additional property: Energy
    type: PropertyValue
    value: 0.214
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.282
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.347
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.893
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Backe, backe Kuchen
type: MusicRecording
duration: PT1M25S
duration ms: 85680
explicit: false
by artist: SingsalaSing, Kinderchor der Landesakademie, Ochsenhausen
by artist: SingsalaSing, Ensemble der Landesakademie, Ochsenhausen
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-01-14
isrc code: DEB111103830
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T20:59:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f505f6a82b12929dd0e173f2a981c28d4c75ce9a897164d1821bfec889766c5
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/DEB111103830
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f505f6a82b12929dd0e173f2a981c28d4c75ce9a897164d1821bfec889766c5. 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/DEB111103830.
  date published: 2026-07-08T03:22:41Z
audio: Backe, backe Kuchen
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Ich bin der Stimmakrobat
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by artist: Evang. Kinderkantorei Stuttgart-Vaihingen
by artist: Daniel Gárdonyi
in album: Kinderlieder Vol. 1 (LIEDERPROJEKT)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd9cae47e28360749cb3eb77f034121bdf681ec062e002708aa404a5fdb3e97. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DEB111103834.
  date published: 2026-07-07T11:02:43Z
audio: Ich bin der Stimmakrobat
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Ein Jäger längs dem Weiher ging
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by artist: Christoph Genz
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Ein Jäger längs dem Weiher ging
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Berlioz: The Complete Works
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date published: 2019-02-01
track: Berlioz: Les Francs-Juges, Op. 3, H 23d
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  by artist: London Classical Players
  by artist: Sir Roger Norrington
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: Berlioz: Les Francs-Juges, Op. 3, H 23d
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track: Berlioz: Overture "Waverley", Op. 1, H. 26
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
  audio: Berlioz: Overture "Waverley", Op. 1, H. 26
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The Beauty of Opera
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date published: 2010-10-08
track: E lucevan le stelle (from "Tosca")
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T16:07:00Z
  audio: E lucevan le stelle (from "Tosca")
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track: Nessun Dorma
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T17:25:41Z
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track: O mio babbino caro from Gianni Schicchi
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OTSTimestamp
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OTSVerifyInstructions
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value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

O mio babbino caro from Gianni Schicchi
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The Ultimate Classical Christmas Album Of All Time
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track: Wiegenlied "Guten Abend, gut Nacht" Op. 49, No. 4

Bach - The 50 Best Classical Masterpieces
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Wolf / Strauss: Angelika Kirchschlager - Wigmore Hall Live
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Schubert: The Complete Secular Choral Works
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10. Festliche Operngala für die Deutsche AIDS-Stiftung
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Je n'aime pas Bach, mais ça j'aime bien !
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track: Was mir behagt, ist nur die muntre Jagd, BWV 208: IX. Schafe können sicher weiden (Arr. for Piano)
track: St. Mathew Passion, BWV 244: "Erbarme dich"
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track: Suite pour violoncelle No.1 en sol majeur, BWV 1007: Praeludium
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Was mir behagt, ist nur die muntre Jagd, BWV 208: IX. Schafe können sicher weiden (Arr. for Piano)
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subject of: OpenTimestamps Proof of Existence
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audio: Was mir behagt, ist nur die muntre Jagd, BWV 208: IX. Schafe können sicher weiden (Arr. for Piano)
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St. Mathew Passion, BWV 244: "Erbarme dich"
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subject of: OpenTimestamps Proof of Existence
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Italian Concerto in F Major, BWV 971: Italian Concerto in F Major, BWV 971: I. [Allegro]
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Keyboard Concerto in F Minor, BWV 1056: III. Presto
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  date published: 2026-07-08T03:53:27Z
audio: Keyboard Concerto in F Minor, BWV 1056: III. Presto
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Suite pour violoncelle No.1 en sol majeur, BWV 1007: Praeludium
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audio: Suite pour violoncelle No.1 en sol majeur, BWV 1007: Praeludium
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Keyboard Concerto in D Major, BWV 1054: Keyboard Concerto in D Major, BWV 1054: I. [Allegro]
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The Very Best Of Britten
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track: 4 Sea Interludes, Op. 33a: Sunday Morning
track: 4 Sea Interludes, Op. 33a: Moonlight
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4 Sea Interludes, Op. 33a: Sunday Morning
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4 Sea Interludes, Op. 33a: Moonlight
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Night Piece (Notturno) (1963)
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The 50 Absolute Essentials of Classical Music
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track: Delibes: Lakmé, Act 1: Duo des fleurs. "Viens, Mallika" - "Dôme épais, le jasmin" (Lakmé, Mallika)
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track: Offenbach: Les contes d'Hoffmann, Act 2: Chanson d'Olympia. "Les oiseaux dans la charmille" (Olympia)
track: Offenbach: Orphée aux enfers, Act II: "Ah! quelle triste destinée" (Eurydice)
track: Ravel: L'enfant et les sortilèges, M. 71, Tableau I: "Arrière ! Je réchauffe les bons" (Le Feu)
track: Bellini: I puritani, Act II: "O rendetemi la speme" (Elvira, Giorgio, Riccardo)
track: Bellini: I puritani, Act II: "Vien, diletto, è in ciel la luna" (Elvira, Riccardo, Giorgio)
track: Bellini: I Capuleti e i Montecchi, Act I: "Oh! Quante volte" (Giulietta)
track: Donizetti: Lucia di Lammermoor, Act III: "Spargi d'amaro pianto" (Lucia, Enrico, Raimondo, Coro)
track: Mozart: Die Zauberflöte, K. 620, Act 2: Arie. "Ach, ich fühl's" (Pamina)
track: Handel: Giulio Cesare in Egitto, HWV 17, Act 2: "Se pietà di me non senti" (Cleopatra)
track: Handel: Giulio Cesare in Egitto, HWV 17, Act 3: "Piangerò la sorte mia" (Cleopatra)
track: Handel: Giulio Cesare in Egitto, HWV 17, Act 3: "Da tempeste il legno infranto" (Cleopatra)

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date published: 2026-07-08T03:20:19Z

Delibes: Lakmé, Act 1: Duo des fleurs. "Viens, Mallika" - "Dôme épais, le jasmin" (Lakmé, Mallika)
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Offenbach: Les contes d'Hoffmann, Act 2: Chanson d'Olympia. "Les oiseaux dans la charmille" (Olympia)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Offenbach: Les contes d'Hoffmann, Act 2: Chanson d'Olympia. "Les oiseaux dans la charmille" (Olympia)
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Offenbach: Orphée aux enfers, Act II: "Ah! quelle triste destinée" (Eurydice)
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  date published: 2026-07-08T03:20:19Z
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Ravel: L'enfant et les sortilèges, M. 71, Tableau I: "Arrière ! Je réchauffe les bons" (Le Feu)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Ravel: L'enfant et les sortilèges, M. 71, Tableau I: "Arrière ! Je réchauffe les bons" (Le Feu)
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Bellini: I puritani, Act II: "O rendetemi la speme" (Elvira, Giorgio, Riccardo)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Bellini: I puritani, Act II: "O rendetemi la speme" (Elvira, Giorgio, Riccardo)
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Bellini: I puritani, Act II: "Vien, diletto, è in ciel la luna" (Elvira, Riccardo, Giorgio)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Bellini: I puritani, Act II: "Vien, diletto, è in ciel la luna" (Elvira, Riccardo, Giorgio)
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Bellini: I Capuleti e i Montecchi, Act I: "Oh! Quante volte" (Giulietta)
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Donizetti: Lucia di Lammermoor, Act III: "Spargi d'amaro pianto" (Lucia, Enrico, Raimondo, Coro)
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  date published: 2026-07-08T03:22:41Z
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Mozart: Die Zauberflöte, K. 620, Act 2: Arie. "Ach, ich fühl's" (Pamina)
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  date published: 2026-07-08T03:22:41Z
audio: Mozart: Die Zauberflöte, K. 620, Act 2: Arie. "Ach, ich fühl's" (Pamina)
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Handel: Giulio Cesare in Egitto, HWV 17, Act 2: "Se pietà di me non senti" (Cleopatra)
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Handel: Giulio Cesare in Egitto, HWV 17, Act 3: "Piangerò la sorte mia" (Cleopatra)
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Handel: Giulio Cesare in Egitto, HWV 17, Act 3: "Da tempeste il legno infranto" (Cleopatra)
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Great Opera Duets
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track: La Traviata - Acte I: Libiamo ne' lieti calici (Alfredo, Violetta)
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track: La Traviata - Acte III: Parigi, o cara, noi lasceremo (Alfredo, Violetta)
track: Mozart: Die Zauberflöte, K. 620, Act 2: "Pa-pa-pa" (Papageno, Papagena)
track: Monteverdi: L'Incoronazione di Poppea, SV 308, Act 3: "Pur ti miro" (Poppea, Nerone)
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track: Purcell: Dido and Aeneas, Z. 626, Act 3: Trio. "Your Counsel All Is Urged in Vain" (Dido, Belinda, Aeneas)
track: Delibes: Lakmé, Act 1: Duo des fleurs. "Viens, Mallika" - "Dôme épais, le jasmin" (Lakmé, Mallika)
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track: Strauss, R: Der Rosenkavalier, Op. 59, Act 2: "Mir ist die Ehre widerfahren" (Octavian, Sophie)
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OpenTimestamps Proof of Existence
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Stölzel / Arr. Rombi: Bist du bei mir (Formerly Attributed to JS Bach as BWV 508, Arr. Rombi)
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La Traviata - Acte III: Parigi, o cara, noi lasceremo (Alfredo, Violetta)
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  date published: 2026-07-06T06:56:49Z
audio: La Traviata - Acte III: Parigi, o cara, noi lasceremo (Alfredo, Violetta)
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Mozart: Die Zauberflöte, K. 620, Act 2: "Pa-pa-pa" (Papageno, Papagena)
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Monteverdi: L'Incoronazione di Poppea, SV 308, Act 3: "Pur ti miro" (Poppea, Nerone)
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Gluck: Orphée et Eurydice, Wq. 41, Act 3 Scene 1: Duo, "Viens, suis un époux qui t'adore" (Orphée, Eurydice)
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Purcell: Dido and Aeneas, Z. 626, Act 3: Trio. "Your Counsel All Is Urged in Vain" (Dido, Belinda, Aeneas)
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Delibes: Lakmé, Act 1: Duo des fleurs. "Viens, Mallika" - "Dôme épais, le jasmin" (Lakmé, Mallika)
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Pergolesi: Stabat Mater: I. Stabat mater dolorosa
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Handel: Rinaldo, HWV 7, Act 1: Duetto. "Scherzano sul tuo volto" (Almirena, Rinaldo)
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Strauss, R: Der Rosenkavalier, Op. 59, Act 2: "Mir ist die Ehre widerfahren" (Octavian, Sophie)
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Handel: Arminio, HWV 36, Act 3: Duetto. "Ritorna nel core vezzosa brillante" (Tusnelda, Arminio)
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Liszt: The Complete Songs, Vol. 2
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Deutsche Volkslieder / German Folk Songs
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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track: Da unten im Tale, WoO 33, No. 6
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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track: Der Gang zum Liebchen, Op. 48
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  subject of: OpenTimestamps Proof of Existence
  audio: Der Gang zum Liebchen, Op. 48
track: Dort in den Weiden steht ein Haus, Op. 97
track: Ich weiß nicht, was soll es bedeuten ("Loreley")
track: An die Laute, D. 905/Op. 81, No. 2
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OTSVerifyInstructions
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value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b8f7b9cb47c29b461770174c6c94c32e61964cf1941a764da6e99ff56e906. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEE861000878.
date published: 2026-07-08T08:56:20Z

Der Gang zum Liebchen, Op. 48
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Dort in den Weiden steht ein Haus, Op. 97
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Dort in den Weiden steht ein Haus, Op. 97
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Ich weiß nicht, was soll es bedeuten ("Loreley")
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Ich weiß nicht, was soll es bedeuten ("Loreley")
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An die Laute, D. 905/Op. 81, No. 2
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: An die Laute, D. 905/Op. 81, No. 2
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Üb immer Treu und Redlichkeit
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audio: Üb immer Treu und Redlichkeit
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Am Brunnen vor dem Tore
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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Erste Begegnung / First Encounter
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date published: 2004-10-04
track: Lieder (Duette), Op. 63: I. Ich wollt, meine Liebe ergösse sich
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T09:18:01Z
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track: Lieder (Duette), Op. 63: IV. Herbstlied
track: 3 Duette auf Texte von Heinrich Heine: I. Wenn ich in deine Augen sehe
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: Liebesgram, Op. 74, No. 3
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  subject of: OpenTimestamps Proof of Existence
  audio: Liebesgram, Op. 74, No. 3
track: Botschaft, Op. 74, No. 8
track: Wenn ich ein Vöglein wär, Op. 43, No. 1
track: Bedeckt mich mit Blumen, Op. 138, No. 4
track: Mährische Duette, Op. 32: Ich schwimm dir davon
track: Mährische Duette, Op. 32: Fliege, Vöglein
track: Mährische Duette, Op. 32: Freundlich lass uns scheiden
track: Mährische Duette, Op. 32: Die Bescheidene
track: Mährische Duette, Op. 32: Der Ring
track: Lieder (Duette), Op. 63: II. Abschiedslied der Zugvögel

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OTSVerificationAPI
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Liebesgram, Op. 74, No. 3
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Botschaft, Op. 74, No. 8
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Botschaft, Op. 74, No. 8
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Bedeckt mich mit Blumen, Op. 138, No. 4
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subject of: OpenTimestamps Proof of Existence
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audio: Bedeckt mich mit Blumen, Op. 138, No. 4
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Mährische Duette, Op. 32: Ich schwimm dir davon
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subject of: OpenTimestamps Proof of Existence
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audio: Mährische Duette, Op. 32: Ich schwimm dir davon
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Mährische Duette, Op. 32: Fliege, Vöglein
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Mährische Duette, Op. 32: Freundlich lass uns scheiden
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Mährische Duette, Op. 32: Die Bescheidene
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Mährische Duette, Op. 32: Der Ring
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Bach, J.S.: Mass in B minor, BWV232
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Brahms: The Complete Songs, Vol. 1
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Women's Lives & Loves: Songs & Duets of Love, Marriage, Motherhood & Loss
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Weihnachtslieder
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Dvorak: Cello Concertos
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track: Cello Concerto in B Minor, Op. 104: Adagio ma non troppo
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track: Zigeunermelodien, Op. 55: I. Mein Lied ertönt
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Zigeunermelodien, Op. 55: IV. Als die alte Mutter mich noch lehrte singen
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track: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: No. 1, Duettino. Cinque... dieci... venti... (Figaro, Susanna)
track: Le nozze di Figaro, K. 492, Atto II Scena 1: Recitativo. Vieni, cara Susanna (La Contessa, Susanna, Figaro)
track: Le nozze di Figaro, K. 492, Atto III Scena 5: No. 19, Riconosci in questo amplesso (Sestetto)
track: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: Recitativo. Cosa stai misurando (Susanna, Figaro)
track: Le nozze di Figaro, K. 492, Atto II Scena 2: Recitativo. Quanto duolmi, Susanna (La Contessa, Susanna, Cherubino)
track: Le nozze di Figaro, K. 492, Atto III Scene 6 & 7: Recitativo. Eccovi, o caro amico (Marcellina, Bartolo, Figaro, Susanna)
track: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: No. 2, Duettino. Se a caso madama (Figaro, Susanna)
track: Le nozze di Figaro, K. 492, Atto II Scena 2: No. 12, Arietta. Voi che sapete (Cherubino)
track: Le nozze di Figaro, K. 492, Atto III Scena 8: No. 20, Recitativo e Aria. E Susanna non vien! (La Contessa)
track: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: Recitativo. Or bene ascolta, e taci (Susanna, Figaro )
track: Le nozze di Figaro, K. 492, Atto II Scena 2: Recitativo. Bravo! che bella voce! (La Contessa, Susanna, Cherubino)
track: Le nozze di Figaro, K. 492, Atto III Scene 9 - 10: Recitativo. Io vi dico, signor (Antonio, Il Conte)
track: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: No. 3, Cavatina. Se vuol ballare (Figaro)
track: Le nozze di Figaro, K. 492, Atto II Scena 2: No. 13, Aria. Venite inginocchiatevi... (Susanna)
track: Le nozze di Figaro, K. 492, Atto III Scene 9 - 10: No. 21, Su l'aria... (Duettino Susanna, La Contessa)
track: Le nozze di Figaro, K. 492, Atto I Scena 3: Recitativo. Ed aspettate il giorno (Bartolo, Marcellina)
track: Le nozze di Figaro, K. 492, Atto II Scena 2: Recitativo. Quante buffonerie! (La Contessa, Susanna, Cherubino, il Conte)
track: Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: No. 22, Coro. Ricevete, o padroncina
track: Le nozze di Figaro, K. 492, Atto I Scena 3: No. 4, Aria. La vendetta, oh, la vendetta (Bartolo)
track: Le nozze di Figaro, K. 492, Atto II Scena 3: Recitativo. Che novità! Non fu mai (Il Conte, la Contessa)
track: Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: Recitativo. Queste sono, Madama (Barbarina, la Contessa, Susanna, Antonio, il Conte, Cherubino)
track: Le nozze di Figaro, K. 492, Atto I Scena 4: Recitativo. Tutto ancor non ho perso (Marcellina, Susanna)
track: Le nozze di Figaro, K. 492, Atto II Scena 3: No. 14, Terzetto. Susanna, or via, sortite (Il Conte, la Contessa, Susanna)
track: Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: No. 23, Finale. Ecco la marcia (Figaro, Susanna, il Conte, la Contessa, 2 Ragazze, Coro)
track: Le nozze di Figaro, K. 492, Atto I Scena 4: No. 5, Duettino. Via, resti servita (Marcellina, Susanna)
track: Le nozze di Figaro, K. 492, Atto II Scena 3: Recitativo. Dunque, voi non aprite? (Il Conte, la Contessa)
track: Le nozze di Figaro, K. 492, Atto I Scena 5: Recitativo. Va là, vecchia pedante (Susanna, Cherubino)
track: Le nozze di Figaro, K. 492, Atto II Scena 4: No. 15, Duettino. Aprite, presto, aprite (Susanna, Cherubino)
track: Le nozze di Figaro, K. 492, Atto I Scena 5: No. 6, Aria. Non so più cosa son (Cherubino)
track: Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: Recitativo. Ah, son perduto! (Cherubino, Susanna, il Conte, Basilio)
track: Le nozze di Figaro, K. 492, Atto II Scene 5 - 8: Recitativo. Tutto è come io lasciai (Il Conte, la Contessa)
track: Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: No. 7, Terzetto Il. Cosa sento! tosto andate (Conte, Basilio, Susanna)
track: Le nozze di Figaro, K. 492, Atto II Scene 5 - 8: No. 16, Finale. Esci, ormai, garzon malnato (Il Conte, la Contessa)
track: Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: Recitativo. Basilio, in traccia tosto (Il Conte, Susanna, Cherubino, Basilio)
track: Le nozze di Figaro, K. 492, Atto II Scena 9: Signori, di fuori (Figaro, il Conte, Susanna, la Contessa)
track: Le nozze di Figaro, K. 492, Atto I Scena 8: No. 8, Coro. Giovani liete
track: Le nozze di Figaro, K. 492, Atto II Scene 10 - 11: Ah, signor... signor (Antonio, il Conte, Susanna, la Contessa, Figaro)
track: Le nozze di Figaro, K. 492, Atto I Scena 8: Recitativo. Cos'è questa commedia? (Il Conte, Susanna, Figaro)
track: Le nozze di Figaro, K. 492, Atto II Scena 10 - 11: Voi signor, che giusto siete (Marcellina, Basilio, Bartolo, il Conte, Susanna, la Contessa, Figaro)
track: Le nozze di Figaro, K. 492, Atto I Scena 8: No. 9, Coro. Giovani liete
track: Le nozze di Figaro, K. 492, Atto III Scene 1 - 3: Recitativo. Che imbarazzo è mai questo! (Il Conte, la Contessa, Susanna)
track: Le nozze di Figaro, K. 492, Atto I Scena 8: Recitativo. Evviva! (Figaro, Susanna, Basilio, Cherubino, il Conte)
track: Le nozze di Figaro, K. 492, Atto III Scene 1 - 3: No. 17, Duettino. Crudel! Perché finora (Il Conte, Susanna)
track: Le nozze di Figaro, K. 492, Atto I Scena 8: No. 10, Aria. Non più andrai (Figaro)
track: Le nozze di Figaro, K. 492, Atto III Scene 1 - 3: Recitativo. E perché fosti meco (Il Conte, Susanna, Figaro)
track: Le nozze di Figaro, K. 492, Atto III Scena 4: No. 18, Recitativo e Aria. Hai già vinta la causa! (Il Conte)

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date published: 2026-07-02T03:30:09Z

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  date published: 2026-06-13T17:25:41Z
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  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto II Scena 1: Recitativo. Vieni, cara Susanna (La Contessa, Susanna, Figaro)
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Le nozze di Figaro, K. 492, Atto III Scena 5: No. 19, Riconosci in questo amplesso (Sestetto)
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Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: Recitativo. Cosa stai misurando (Susanna, Figaro)
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  date published: 2026-06-13T13:32:09Z
audio: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: Recitativo. Cosa stai misurando (Susanna, Figaro)
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Le nozze di Figaro, K. 492, Atto III Scene 6 & 7: Recitativo. Eccovi, o caro amico (Marcellina, Bartolo, Figaro, Susanna)
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duration ms: 108266
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by artist: Wolfgang Amadeus Mozart
by artist: Concerto Köln
by artist: René Jacobs
by artist: Patrizia Ciofi
by artist: Antonio Abete
by artist: Lorenzo Regazzo
by artist: Marie McLaughlin
in album: Mozart: Le nozze di Figaro
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  date published: 2004
genre: classical
genre: classical-era
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5896556090f1e2ebecb75c28cb694d46eb4a6307051eff86fe428e5943125a24. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140310030.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto III Scene 6 & 7: Recitativo. Eccovi, o caro amico (Marcellina, Bartolo, Figaro, Susanna)
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Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: No. 2, Duettino. Se a caso madama (Figaro, Susanna)
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duration: PT2M34S
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by artist: Wolfgang Amadeus Mozart
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by artist: Lorenzo Regazzo
by artist: Patrizia Ciofi
by artist: Concerto Köln
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genre: classical
genre: classical-era
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065e9afda29557d3c6aae928fa193c368897c7947c2c91bfc03654616bbefe19. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ140308040.
  date published: 2026-06-13T17:25:41Z
audio: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: No. 2, Duettino. Se a caso madama (Figaro, Susanna)
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Le nozze di Figaro, K. 492, Atto III Scena 8: No. 20, Recitativo e Aria. E Susanna non vien! (La Contessa)
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duration: PT5M53S
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by artist: Wolfgang Amadeus Mozart
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by artist: René Jacobs
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
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genre: classical
genre: classical-era
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e08edd525b58db48395700b14af63489a478f335d3abeae2c6d267b134370a7. 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/FRZ140310040.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto III Scena 8: No. 20, Recitativo e Aria. E Susanna non vien! (La Contessa)
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Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: Recitativo. Or bene ascolta, e taci (Susanna, Figaro )
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by artist: Wolfgang Amadeus Mozart
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by artist: Concerto Köln
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genre: classical
genre: classical-era
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: Recitativo. Or bene ascolta, e taci (Susanna, Figaro )
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Le nozze di Figaro, K. 492, Atto III Scene 9 - 10: Recitativo. Io vi dico, signor (Antonio, Il Conte)
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explicit: false
by artist: Wolfgang Amadeus Mozart
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by artist: Antonio Abete
by artist: René Jacobs
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genre: classical
genre: classical-era
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto III Scene 9 - 10: Recitativo. Io vi dico, signor (Antonio, Il Conte)
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Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: No. 3, Cavatina. Se vuol ballare (Figaro)
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duration ms: 158800
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by artist: Wolfgang Amadeus Mozart
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by artist: Lorenzo Regazzo
by artist: Concerto Köln
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genre: classical
genre: classical-era
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347385f21bad5d67d488c25cb928e54aaae506e03d07ba87dec46a0be9f96adc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308060.
  date published: 2026-06-13T13:32:09Z
audio: Le nozze di Figaro, K. 492, Atto I Scene 1 - 2: No. 3, Cavatina. Se vuol ballare (Figaro)
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Le nozze di Figaro, K. 492, Atto II Scena 2: No. 13, Aria. Venite inginocchiatevi... (Susanna)
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by artist: Concerto Köln
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genre: classical
genre: classical-era
isrc code: FRZ140309060
additional property: CopyrightID
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x1c854d762af44f58ef1609776fb7630cf786810399b253ee080fe36c19160d18
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309060
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c854d762af44f58ef1609776fb7630cf786810399b253ee080fe36c19160d18. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309060.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto II Scena 2: No. 13, Aria. Venite inginocchiatevi... (Susanna)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.156
  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: 0.386
  additional property: Energy
    type: PropertyValue
    value: 0.098
  additional property: Speechiness
    type: PropertyValue
    value: 0.088
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.283
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.248
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto III Scene 9 - 10: No. 21, Su l'aria... (Duettino Susanna, La Contessa)
type: MusicRecording
duration: PT2M55S
duration ms: 175066
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Concerto Köln
by artist: René Jacobs
by artist: Véronique Gens
by artist: Patrizia Ciofi
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140310060
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T04:06:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x462b9099c2049c4bca4cdfe06711630fb169f79cdd2a553a9bc069440e86064d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140310060
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b9099c2049c4bca4cdfe06711630fb169f79cdd2a553a9bc069440e86064d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ140310060.
  date published: 2026-06-13T17:25:41Z
audio: Le nozze di Figaro, K. 492, Atto III Scene 9 - 10: No. 21, Su l'aria... (Duettino Susanna, La Contessa)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.342
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.367
  additional property: Energy
    type: PropertyValue
    value: 0.069
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.385
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.25
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.519
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto I Scena 3: Recitativo. Ed aspettate il giorno (Bartolo, Marcellina)
type: MusicRecording
duration: PT1M0S
duration ms: 60400
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Antonio Abete
by artist: Marie McLaughlin
by artist: René Jacobs
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308070
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T13:31:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xacf254f670eb48d1417ead9dcbbaf2451ecde01d17108d70e9dd474f3dc0f465
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308070
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf254f670eb48d1417ead9dcbbaf2451ecde01d17108d70e9dd474f3dc0f465. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRZ140308070.
  date published: 2026-06-13T15:41:10Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 3: Recitativo. Ed aspettate il giorno (Bartolo, Marcellina)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.804
  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: 0.648
  additional property: Energy
    type: PropertyValue
    value: 0.175
  additional property: Speechiness
    type: PropertyValue
    value: 0.522
  additional property: Acousticness
    type: PropertyValue
    value: 0.974
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.27
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.596
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.091
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: No. 22, Coro. Ricevete, o padroncina
type: MusicRecording
duration: PT1M8S
duration ms: 68933
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Concerto Köln
by artist: René Jacobs
by artist: Collegium Vocale Gent
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140310070
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T05:04:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4c1243d7f9e94e3c66e5492a28cced7222c7bb34d1a90c89819691a7d69bdb4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140310070
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c1243d7f9e94e3c66e5492a28cced7222c7bb34d1a90c89819691a7d69bdb4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140310070.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: No. 22, Coro. Ricevete, o padroncina
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.711
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.293
  additional property: Energy
    type: PropertyValue
    value: 0.104
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.953
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.243
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.134
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.731
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le nozze di Figaro, K. 492, Atto I Scena 3: No. 4, Aria. La vendetta, oh, la vendetta (Bartolo)
type: MusicRecording
duration: PT2M59S
duration ms: 179466
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Concerto Köln
by artist: Antonio Abete
by artist: René Jacobs
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308080
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T05:01:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x13389ff693cae884dc49eebfb4e15270a6ed009f4d4c732e33868d5c2d268c40
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308080
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13389ff693cae884dc49eebfb4e15270a6ed009f4d4c732e33868d5c2d268c40. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ140308080.
  date published: 2026-06-13T17:25:41Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 3: No. 4, Aria. La vendetta, oh, la vendetta (Bartolo)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 148.06
  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: 0.402
  additional property: Energy
    type: PropertyValue
    value: 0.209
  additional property: Speechiness
    type: PropertyValue
    value: 0.085
  additional property: Acousticness
    type: PropertyValue
    value: 0.966
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.021
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.427
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.443
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Atto II Scena 3: Recitativo. Che novità! Non fu mai (Il Conte, la Contessa)
type: MusicRecording
duration: PT1M18S
duration ms: 78133
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Simon Keenlyside
by artist: Concerto Köln
by artist: René Jacobs
by artist: Véronique Gens
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140309080
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T08:08:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7c9a1f725a0369a86de1dfe6cdf781fe1ef062117554f79a161425213b08b90
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/FRZ140309080
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c9a1f725a0369a86de1dfe6cdf781fe1ef062117554f79a161425213b08b90. 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/FRZ140309080.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto II Scena 3: Recitativo. Che novità! Non fu mai (Il Conte, la Contessa)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.761
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.625
  additional property: Energy
    type: PropertyValue
    value: 0.238
  additional property: Speechiness
    type: PropertyValue
    value: 0.675
  additional property: Acousticness
    type: PropertyValue
    value: 0.961
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.23
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.43
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.575
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le nozze di Figaro, K. 492, Atto I Scena 4: Recitativo. Tutto ancor non ho perso (Marcellina, Susanna)
type: MusicRecording
duration: PT0M49S
duration ms: 49866
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Patrizia Ciofi
by artist: René Jacobs
by artist: Concerto Köln
by artist: Marie McLaughlin
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308090
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T13:30:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f56ec44b7c707d838cca01bbc29491d5cca2ff3babd5c9d108d36e00e62b73d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308090
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f56ec44b7c707d838cca01bbc29491d5cca2ff3babd5c9d108d36e00e62b73d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRZ140308090.
  date published: 2026-06-13T15:41:10Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 4: Recitativo. Tutto ancor non ho perso (Marcellina, Susanna)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 175.132
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.424
  additional property: Energy
    type: PropertyValue
    value: 0.033
  additional property: Speechiness
    type: PropertyValue
    value: 0.1
  additional property: Acousticness
    type: PropertyValue
    value: 0.97
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.245
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.413
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.441
  additional property: Key Name
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    value: G
  additional property: Mode Name
    type: PropertyValue
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Le nozze di Figaro, K. 492, Atto II Scena 3: No. 14, Terzetto. Susanna, or via, sortite (Il Conte, la Contessa, Susanna)
type: MusicRecording
duration: PT3M10S
duration ms: 190000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Simon Keenlyside
by artist: René Jacobs
by artist: Véronique Gens
by artist: Concerto Köln
by artist: Patrizia Ciofi
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140309090
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T02:54:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x321fec3db4ca4c3ce62f767412b14cc8cb2efced98315d256ea664bf8a9e2b8d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309090
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321fec3db4ca4c3ce62f767412b14cc8cb2efced98315d256ea664bf8a9e2b8d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309090.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto II Scena 3: No. 14, Terzetto. Susanna, or via, sortite (Il Conte, la Contessa, Susanna)
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  additional property: Tempo (BPM)
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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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  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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Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: No. 23, Finale. Ecco la marcia (Figaro, Susanna, il Conte, la Contessa, 2 Ragazze, Coro)
type: MusicRecording
duration: PT6M36S
duration ms: 396533
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Yeree Suh
by artist: Lorenzo Regazzo
by artist: Elisabeth Rapp
by artist: Collegium Vocale Gent
by artist: Véronique Gens
by artist: Simon Keenlyside
by artist: Concerto Köln
by artist: Patrizia Ciofi
by artist: René Jacobs
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140310090
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T04:59:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe2be9eac46a9f2bd2f0d0a3d0875c1b1b7ed396360b67b2051042f4a7d758ed2
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140310090
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2be9eac46a9f2bd2f0d0a3d0875c1b1b7ed396360b67b2051042f4a7d758ed2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140310090.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto III Scene 11 - 14: No. 23, Finale. Ecco la marcia (Figaro, Susanna, il Conte, la Contessa, 2 Ragazze, Coro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.582
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.493
  additional property: Energy
    type: PropertyValue
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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
    type: PropertyValue
    value: 0.007
  additional property: Liveness
    type: PropertyValue
    value: 0.235
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.187
  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Le nozze di Figaro, K. 492, Atto I Scena 4: No. 5, Duettino. Via, resti servita (Marcellina, Susanna)
type: MusicRecording
duration: PT2M22S
duration ms: 142400
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: René Jacobs
by artist: Concerto Köln
by artist: Patrizia Ciofi
by artist: Marie McLaughlin
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308100
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T05:00:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2e7fc148a9f95f4956f4bce3b3da0d9fd1917cc32901c838a1d87b46f80c233b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308100
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7fc148a9f95f4956f4bce3b3da0d9fd1917cc32901c838a1d87b46f80c233b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ140308100.
  date published: 2026-06-13T17:25:41Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 4: No. 5, Duettino. Via, resti servita (Marcellina, Susanna)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.292
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.44
  additional property: Energy
    type: PropertyValue
    value: 0.189
  additional property: Speechiness
    type: PropertyValue
    value: 0.121
  additional property: Acousticness
    type: PropertyValue
    value: 0.967
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.544
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.296
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.925
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
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Le nozze di Figaro, K. 492, Atto II Scena 3: Recitativo. Dunque, voi non aprite? (Il Conte, la Contessa)
type: MusicRecording
duration: PT0M54S
duration ms: 54800
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Véronique Gens
by artist: René Jacobs
by artist: Concerto Köln
by artist: Simon Keenlyside
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140309100
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T08:09:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x703db2396dcc0e6cf0195a29039cd3e69c33ccc609562049377115601ccf547f
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/FRZ140309100
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703db2396dcc0e6cf0195a29039cd3e69c33ccc609562049377115601ccf547f. 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/FRZ140309100.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto II Scena 3: Recitativo. Dunque, voi non aprite? (Il Conte, la Contessa)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.369
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.585
  additional property: Energy
    type: PropertyValue
    value: 0.244
  additional property: Speechiness
    type: PropertyValue
    value: 0.513
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.563
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.423
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.585
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Le nozze di Figaro, K. 492, Atto II Scene 5 - 8: Recitativo. Tutto è come io lasciai (Il Conte, la Contessa)
type: MusicRecording
duration: PT1M16S
duration ms: 76400
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Concerto Köln
by artist: René Jacobs
by artist: Véronique Gens
by artist: Simon Keenlyside
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140309130
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T08:12:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x58a3870559745ff1741ed1e7bcaab6b7b32d1e9cf7a3271c16112b9f196349fc
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/FRZ140309130
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a3870559745ff1741ed1e7bcaab6b7b32d1e9cf7a3271c16112b9f196349fc. 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/FRZ140309130.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto II Scene 5 - 8: Recitativo. Tutto è come io lasciai (Il Conte, la Contessa)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.152
  additional property: Musical Key
    type: PropertyValue
    value: 10
  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: 0.663
  additional property: Energy
    type: PropertyValue
    value: 0.254
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.932
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.444
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.324
  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: No. 7, Terzetto Il. Cosa sento! tosto andate (Conte, Basilio, Susanna)
type: MusicRecording
duration: PT4M7S
duration ms: 247066
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Simon Keenlyside
by artist: René Jacobs
by artist: Patrizia Ciofi
by artist: Kobie Van Rensburg
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140308140
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcc96ea68242f1257d3db13874c2bdfd0b979632c73849556ef9612e1f0a5da04
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308140
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc96ea68242f1257d3db13874c2bdfd0b979632c73849556ef9612e1f0a5da04. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308140.
  date published: 2026-06-13T13:32:09Z
audio: Le nozze di Figaro, K. 492, Atto I Scene 6 - 7: No. 7, Terzetto Il. Cosa sento! tosto andate (Conte, Basilio, Susanna)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.035
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.455
  additional property: Energy
    type: PropertyValue
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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
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.431
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    value: Bb
  additional property: Mode Name
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Le nozze di Figaro, K. 492, Atto II Scene 5 - 8: No. 16, Finale. Esci, ormai, garzon malnato (Il Conte, la Contessa)
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duration: PT6M45S
duration ms: 405466
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Véronique Gens
by artist: René Jacobs
by artist: Simon Keenlyside
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 2004
genre: classical
genre: classical-era
isrc code: FRZ140309140
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xa7990aee7a130e5ce61da25f8d10c9097a1415f4f70aa218baea65148eedf614
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309140
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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7990aee7a130e5ce61da25f8d10c9097a1415f4f70aa218baea65148eedf614. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309140.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto II Scene 5 - 8: No. 16, Finale. Esci, ormai, garzon malnato (Il Conte, la Contessa)
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Le nozze di Figaro, K. 492, Atto II Scena 9: Signori, di fuori (Figaro, il Conte, Susanna, la Contessa)
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duration: PT2M58S
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by artist: Wolfgang Amadeus Mozart
by artist: René Jacobs
by artist: Simon Keenlyside
by artist: Véronique Gens
by artist: Patrizia Ciofi
by artist: Lorenzo Regazzo
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
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genre: classical
genre: classical-era
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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
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto II Scena 9: Signori, di fuori (Figaro, il Conte, Susanna, la Contessa)
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Le nozze di Figaro, K. 492, Atto I Scena 8: No. 8, Coro. Giovani liete
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duration: PT1M7S
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by artist: Wolfgang Amadeus Mozart
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by artist: Concerto Köln
by artist: Collegium Vocale Gent
in album: Mozart: Le nozze di Figaro
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genre: classical
genre: classical-era
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf9f634b90886a746424b523f52de40ac1e7dd9daed3879974315000d8d59e9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRZ140308160.
  date published: 2026-06-13T15:41:10Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 8: No. 8, Coro. Giovani liete
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Le nozze di Figaro, K. 492, Atto I Scena 8: Recitativo. Cos'è questa commedia? (Il Conte, Susanna, Figaro)
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by artist: Wolfgang Amadeus Mozart
by artist: Simon Keenlyside
by artist: René Jacobs
by artist: Lorenzo Regazzo
by artist: Patrizia Ciofi
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
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genre: classical
genre: classical-era
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additional property: CopyrightID
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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94099921206704b4f00c11d2b5ebbf02377deb0f91b50d9777abcfb09a96896e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140308170.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 8: Recitativo. Cos'è questa commedia? (Il Conte, Susanna, Figaro)
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Le nozze di Figaro, K. 492, Atto I Scena 8: No. 9, Coro. Giovani liete
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duration: PT0M54S
duration ms: 54133
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by artist: Wolfgang Amadeus Mozart
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by artist: René Jacobs
by artist: Concerto Köln
in album: Mozart: Le nozze di Figaro
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genre: classical
genre: classical-era
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto I Scena 8: No. 9, Coro. Giovani liete
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Le nozze di Figaro, K. 492, Atto III Scene 1 - 3: Recitativo. Che imbarazzo è mai questo! (Il Conte, la Contessa, Susanna)
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by artist: Wolfgang Amadeus Mozart
by artist: Concerto Köln
by artist: Simon Keenlyside
by artist: René Jacobs
by artist: Véronique Gens
by artist: Patrizia Ciofi
in album: Mozart: Le nozze di Figaro
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genre: classical
genre: classical-era
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168cf76b4238cb7344f4b0f53c0ce588493e22cc670ea70f33929bb5fba3dbd4. 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/FRZ140309180.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Atto III Scene 1 - 3: Recitativo. Che imbarazzo è mai questo! (Il Conte, la Contessa, Susanna)
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Le nozze di Figaro, K. 492, Atto III Scene 1 - 3: No. 17, Duettino. Crudel! Perché finora (Il Conte, Susanna)
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genre: classical
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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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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec7165f82628e2f895ffea7c1f789cbf2cce7ff9f8a65cdcf69de93e847e901. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140309190.
  date published: 2026-07-02T03:30:09Z
audio: Le nozze di Figaro, K. 492, Atto III Scene 1 - 3: No. 17, Duettino. Crudel! Perché finora (Il Conte, Susanna)
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Le nozze di Figaro, K. 492, Atto I Scena 8: No. 10, Aria. Non più andrai (Figaro)
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Le nozze di Figaro, K. 492, Atto III Scene 1 - 3: Recitativo. E perché fosti meco (Il Conte, Susanna, Figaro)
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Le nozze di Figaro, K. 492, Atto III Scena 4: No. 18, Recitativo e Aria. Hai già vinta la causa! (Il Conte)
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Die Erde ist heilig (Worte großer Häuptlinge)
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The Moon's a Gong, Hung in the Wild
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Orgel-Liederreise
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track: Ave Maria - Caccini

Classic Selection - Liederreise
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Seligkeit
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Schumann: Songs
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My Heart Alone
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track: Die lustige Witwe: Da geh' ich zu Maxim
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track: Die Fledermaus: Ich lade gern mir Gäste ein
track: Das Veilchen von Montmartre: Heut' Nacht hab' ich geträumt von dir
track: Das Land des Lächelns: Dein ist mein ganzes Herz

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date published: 2026-07-08T03:22:41Z

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