Friederike Apelt
type: MusicGroup
popularity: 2
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ddf18308d6669adb1c22e676ca69ac3a63e2079effde75388cafe3c3a18b45d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5407afd6-c9c7-404f-aa09-1e6ca635efdf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5407afd6-c9c7-404f-aa09-1e6ca635efdf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5407afd6-c9c7-404f-aa09-1e6ca635efdf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddf18308d6669adb1c22e676ca69ac3a63e2079effde75388cafe3c3a18b45d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5407afd6-c9c7-404f-aa09-1e6ca635efdf.json and https://artists.proofprofile.net/proofs/artist/5407afd6-c9c7-404f-aa09-1e6ca635efdf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
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album: Goldene Operette / Der Bettelstudent - Großer Querschnitt
  type: MusicAlbum
  date published: 1988-01-01
album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
  track: The Bat: Overture
    type: MusicRecording
    duration: PT8M6S
    duration ms: 486493
    explicit: false
    by artist: Johann Strauss II
    by artist: Rudolf Kempe
    by artist: Staatskapelle Dresden
    in album: Operettenhighlights
      type: MusicAlbum
      date published: 2014-07-18
    isrc code: DES380002229
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-29T21:41:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2f621a9a2a52f77c90930563cc6a9671d8feb1f70127ca0db240a860828a4fe7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960150
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960150
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380002229
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-29T21:51:49Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f621a9a2a52f77c90930563cc6a9671d8feb1f70127ca0db240a860828a4fe7. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DES380002229.
      date published: 2026-07-29T21:51:49Z
    audio: The Bat: Overture
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 118.354
      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: 0.348
      additional property: Energy
        type: PropertyValue
        value: 0.262
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.942
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.828
      additional property: Liveness
        type: PropertyValue
        value: 0.107
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.164
      additional property: Loudness (dB)
        type: PropertyValue
        value: -19.107
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: The Gypsy Princess, Act 1: Alle sind wir Sünder
    type: MusicRecording
    duration: PT2M17S
    duration ms: 137640
    explicit: false
    by artist: Emmerich Kálmán
    by artist: Dresdner Philharmonie
    by artist: Chor der Staatsoper Dresden
    by artist: Elka Mitzewa
    by artist: Hannerose Katterfeld
    by artist: Eberhard Büchner
    by artist: Martin Ritzmann
    by artist: Karl-Friedrich Hölzke
    by artist: Heinz Röger
    in album: Operettenhighlights
      type: MusicAlbum
      date published: 2014-07-18
    genre: fado
    isrc code: DES380002558
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T13:30:12+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd2d7dbc5fa6cbcc6fcc2eddec5f848c2b312331b81a1f4222ae36ab6e07ef528
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960410
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960410
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380002558
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T13:50:38Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d7dbc5fa6cbcc6fcc2eddec5f848c2b312331b81a1f4222ae36ab6e07ef528. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380002558.
      date published: 2026-07-31T13:50:38Z
    audio: The Gypsy Princess, Act 1: Alle sind wir Sünder
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.458
      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: 0.487
      additional property: Energy
        type: PropertyValue
        value: 0.284
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: The Gypsy Princess, Act 2: Tanzwalzer. Erstrahlen die Lichter
  track: The Gypsy Princess, Act 2: Duett. Mädel guck (Das ist die Liebe, die dumme Liebe)
  track: The Gypsy Princess, Act 3: Terzett. Nimm, Zigeuner, deine Geige
  track: The Gypsy Princess, Act 3: Finale. Tausend kleine Engel singen
  track: The Land of Smiles, Act 1: Ach, trinken Sie vielleicht mit mir ein Taesschen Tee? - Bei einem Tee en Deux
  track: Mask in Blue: "Schau einer schönen Frau nie zu tief in die Augen"
  track: Der Bettelstudent, Act 1: Einkäufe machen sollten wir eigentlich
  track: Der Bettelstudent, Act 1: Ich knüpfe manche zarte Bande
  track: Orphée aux enfers: Overtüre
  track: The Land of Smiles, Act 2: Wer hat die Liebe uns ins Herz gesenkt
  track: Victoria and Her Hussar: Einmal da schlägt für uns die Stunde - Reich mir zum Abschied noch einmal die Hände
album: Millöcker: Der Bettelstudent (Highlights)
album: Strauss, Lehár, Suppé, Kálmán & Millöcker: Operetta Melodies
album: Goldene Operette / Der Zigeunerbaron & Der Vetter Aus Dingsda: Großer Querschni
album: Jacques Offenbach: Orpheus in der Unterwelt (QS)
album: Offenbach: Orpheus in der Unterwelt (Highlights)

Acousticness
type: PropertyValue
value: 0.886

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.302

Valence (Positivity)
type: PropertyValue
value: 0.69

Loudness (dB)
type: PropertyValue
value: -20.118

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

The Gypsy Princess, Act 2: Tanzwalzer. Erstrahlen die Lichter
type: MusicRecording
duration: PT1M53S
duration ms: 113733
explicit: false
by artist: Emmerich Kálmán
by artist: Dresdner Philharmonie
by artist: Chor der Staatsoper Dresden
by artist: Elka Mitzewa
by artist: Hannerose Katterfeld
by artist: Eberhard Büchner
by artist: Martin Ritzmann
by artist: Karl-Friedrich Hölzke
by artist: Heinz Röger
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
genre: fado
isrc code: DES380002560
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:26:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc272bcc116aed04ca977b65afe9fbfa545a85854c6f2eb825899a51ddb449048
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/DES380002560
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc272bcc116aed04ca977b65afe9fbfa545a85854c6f2eb825899a51ddb449048. 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/DES380002560.
  date published: 2026-07-08T03:20:19Z
audio: The Gypsy Princess, Act 2: Tanzwalzer. Erstrahlen die Lichter
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.811
  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: 0.337
  additional property: Energy
    type: PropertyValue
    value: 0.222
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.943
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.731
  additional property: Liveness
    type: PropertyValue
    value: 0.348
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.576
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.053
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Gypsy Princess, Act 2: Duett. Mädel guck (Das ist die Liebe, die dumme Liebe)
type: MusicRecording
duration: PT2M41S
duration ms: 161706
explicit: false
by artist: Emmerich Kálmán
by artist: Dresdner Philharmonie
by artist: Chor der Staatsoper Dresden
by artist: Elka Mitzewa
by artist: Hannerose Katterfeld
by artist: Eberhard Büchner
by artist: Martin Ritzmann
by artist: Karl-Friedrich Hölzke
by artist: Heinz Röger
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
genre: fado
isrc code: DES380002248
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:41:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x67eb8eacc9275b7fef62e64b6ae935342e0554fdb14775232c138bb9b35864b2
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/DES380002248
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eb8eacc9275b7fef62e64b6ae935342e0554fdb14775232c138bb9b35864b2. 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/DES380002248.
  date published: 2026-07-08T03:20:19Z
audio: The Gypsy Princess, Act 2: Duett. Mädel guck (Das ist die Liebe, die dumme Liebe)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.075
  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: 0.419
  additional property: Energy
    type: PropertyValue
    value: 0.286
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0.336
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.247
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.424
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Gypsy Princess, Act 3: Terzett. Nimm, Zigeuner, deine Geige
type: MusicRecording
duration: PT3M39S
duration ms: 219360
explicit: false
by artist: Emmerich Kálmán
by artist: Dresdner Philharmonie
by artist: Chor der Staatsoper Dresden
by artist: Elka Mitzewa
by artist: Hannerose Katterfeld
by artist: Eberhard Büchner
by artist: Martin Ritzmann
by artist: Karl-Friedrich Hölzke
by artist: Heinz Röger
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
genre: fado
isrc code: DES380002563
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T15:21:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x93cb8efea8e3ed5aa12221ee58562bfdfc791f914ba2c3e05998306f3ce6551a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960422
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380002563
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:27:29Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cb8efea8e3ed5aa12221ee58562bfdfc791f914ba2c3e05998306f3ce6551a. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DES380002563.
  date published: 2026-07-31T15:27:29Z
audio: The Gypsy Princess, Act 3: Terzett. Nimm, Zigeuner, deine Geige
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 134.23
  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
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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The Gypsy Princess, Act 3: Finale. Tausend kleine Engel singen
type: MusicRecording
duration: PT1M12S
duration ms: 72426
explicit: false
by artist: Emmerich Kálmán
by artist: Dresdner Philharmonie
by artist: Chor der Staatsoper Dresden
by artist: Elka Mitzewa
by artist: Hannerose Katterfeld
by artist: Eberhard Büchner
by artist: Martin Ritzmann
by artist: Karl-Friedrich Hölzke
by artist: Heinz Röger
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
genre: fado
isrc code: DES380002249
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
audio: The Gypsy Princess, Act 3: Finale. Tausend kleine Engel singen
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The Land of Smiles, Act 1: Ach, trinken Sie vielleicht mit mir ein Taesschen Tee? - Bei einem Tee en Deux
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duration: PT3M29S
duration ms: 209333
explicit: false
by artist: Franz Lehár
by artist: Dresdner Philharmonie
by artist: Heinz Rögner
by artist: Peter Schreier
by artist: Sylvia Geszty
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
genre: opera
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-31T13:26:30Z
audio: The Land of Smiles, Act 1: Ach, trinken Sie vielleicht mit mir ein Taesschen Tee? - Bei einem Tee en Deux
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Mask in Blue: "Schau einer schönen Frau nie zu tief in die Augen"
type: MusicRecording
duration: PT4M9S
duration ms: 249826
explicit: false
by artist: Fred Raymond
by artist: Dresdner Philharmonie
by artist: Heinz Rögner
by artist: Peter Schreier
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
isrc code: DES380002567
additional property: CopyrightID
additional property: CopyrightStatus
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T20:09:33Z
audio: Mask in Blue: "Schau einer schönen Frau nie zu tief in die Augen"
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Der Bettelstudent, Act 1: Einkäufe machen sollten wir eigentlich
type: MusicRecording
duration: PT2M22S
duration ms: 142893
explicit: false
by artist: Carl Millöcker
by artist: MDR Leipzig Radio Chorus
by artist: Rundfunk-Sinfonieorchester Leipzig
by artist: Günther Herbig
by artist: Ingeborg Wenglor
by artist: Roswitha Trexler
by artist: Friederike Apelt
by artist: Peter Schreier
by artist: Karl-Friedrich Hölzke
by artist: Wolfgang Hellmich
by artist: Siegfried Vogel
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
isrc code: DES380012723
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63d71bc3d120866eb776cc6192b51263d86abb82add20bc5d91e9de61c945d1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380012723.
  date published: 2026-07-31T12:24:41Z
audio: Der Bettelstudent, Act 1: Einkäufe machen sollten wir eigentlich
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Der Bettelstudent, Act 1: Ich knüpfe manche zarte Bande
type: MusicRecording
duration: PT2M28S
duration ms: 148533
explicit: false
by artist: Carl Millöcker
by artist: MDR Leipzig Radio Chorus
by artist: Rundfunk-Sinfonieorchester Leipzig
by artist: Günther Herbig
by artist: Ingeborg Wenglor
by artist: Roswitha Trexler
by artist: Friederike Apelt
by artist: Peter Schreier
by artist: Karl-Friedrich Hölzke
by artist: Wolfgang Hellmich
by artist: Siegfried Vogel
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
isrc code: DES380002239
additional property: CopyrightID
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additional property: OTSHash
additional property: OTSBitcoinBlock
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2953cf886eabefeb27b50e7962e1327611f622ff49f8298c7f860021972531. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/DES380002239.
  date published: 2026-07-31T05:48:30Z
audio: Der Bettelstudent, Act 1: Ich knüpfe manche zarte Bande
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  additional property: Tempo (BPM)
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  additional property: Danceability
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  additional property: Speechiness
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  additional property: Instrumentalness
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Orphée aux enfers: Overtüre
type: MusicRecording
duration: PT8M49S
duration ms: 529426
explicit: false
by artist: Jacques Offenbach
by artist: MDR Leipzig Radio Chorus
by artist: Dresdner Philharmonie
by artist: Heinz Rögner
in album: Operettenhighlights
  type: MusicAlbum
  date published: 2014-07-18
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec3d72df2b4d6094a012e9edfcb3d2704fd34600379a5a06abd1db474c7faaa. 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/DES380002577.
  date published: 2026-07-08T03:20:19Z
audio: Orphée aux enfers: Overtüre
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  additional property: Danceability
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The Land of Smiles, Act 2: Wer hat die Liebe uns ins Herz gesenkt
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duration: PT4M18S
duration ms: 258426
explicit: false
by artist: Franz Lehár
by artist: Heinz Rögner
by artist: Dresdner Philharmonie
by artist: Sylvia Geszty
by artist: Peter Schreier
in album: Operettenhighlights
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  date published: 2014-07-18
genre: opera
isrc code: DES380002585
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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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
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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Victoria and Her Hussar: Einmal da schlägt für uns die Stunde - Reich mir zum Abschied noch einmal die Hände
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by artist: Peter Schreier
by artist: Sylvia Geszty
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
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Strauss, Lehár, Suppé, Kálmán & Millöcker: Operetta Melodies
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Goldene Operette / Der Zigeunerbaron & Der Vetter Aus Dingsda: Großer Querschni
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T17:41:38Z
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track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Und wieder geht ein Tag zu Ende - Die öffentliche Meinung bin ich - Ich bin die Frau Eurydike
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-08-01T04:52:22Z
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track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": So ist das? So? - Ja, mein Coco!
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track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Du Verräter, Attentäter - Ja, die öffentliche Meinung, die dein Treiben überwacht
track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Eh hopp. Eh hopp. Platz dem Merkur!
track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Um die Alkmene zu verführen
track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Ich kann es nicht länger ertragen
track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Als ich einst Prinz war in Arkadien
track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Willst du partout dir ein Weibchen erringen - Ich glaubte hier etwas zu fühlen
track: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Jung wird man dabei!

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Jacques Offenbach: Orpheus in der Unterwelt (QS)
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:53:27Z

Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": So ist das? So? - Ja, mein Coco!
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T20:09:33Z
audio: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Du Verräter, Attentäter - Ja, die öffentliche Meinung, die dein Treiben überwacht
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Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Eh hopp. Eh hopp. Platz dem Merkur!
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by artist: Jacques Offenbach
by artist: Ruth Schob-Lipka
by artist: Karl-Friedrich Hölzke
by artist: Hermann Christian Polster
by artist: Dresdner Philharmonie
by artist: Robert Hanell
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popularity: 0
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: DEUM70603593
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T22:58:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74fa38fc1eefdf07d876de4409dab413835cf75b2741426292b1b3c32bd881fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960478
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960478
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70603593
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:30:38Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fa38fc1eefdf07d876de4409dab413835cf75b2741426292b1b3c32bd881fd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70603593.
  date published: 2026-07-31T23:30:38Z
audio: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Eh hopp. Eh hopp. Platz dem Merkur!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.526
  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: 0.766
  additional property: Energy
    type: PropertyValue
    value: 0.358
  additional property: Speechiness
    type: PropertyValue
    value: 0.216
  additional property: Acousticness
    type: PropertyValue
    value: 0.828
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.752
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.448
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Um die Alkmene zu verführen
type: MusicRecording
duration: PT2M10S
duration ms: 130840
explicit: false
by artist: Jacques Offenbach
by artist: Gudrun Fischer
by artist: Friederike Apelt
by artist: Wolfgang Hellmich
by artist: MDR Leipzig Radio Chorus
by artist: Dresdner Philharmonie
by artist: Horst Neumann
by artist: Robert Hanell
in album: Jacques Offenbach: Orpheus in der Unterwelt (QS)
  type: MusicAlbum
  date published: 1970-01-01
popularity: 0
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: DEUM70603594
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T19:46:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x45bff5851db7e2ac4f262b2ea7d6acbfda3a08dd77c7183ac5bb9e211eebdf63
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960456
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960456
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70603594
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:57Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bff5851db7e2ac4f262b2ea7d6acbfda3a08dd77c7183ac5bb9e211eebdf63. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/DEUM70603594.
  date published: 2026-07-31T19:53:57Z
audio: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Um die Alkmene zu verführen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 156.247
  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: 0.66
  additional property: Energy
    type: PropertyValue
    value: 0.262
  additional property: Speechiness
    type: PropertyValue
    value: 0.23
  additional property: Acousticness
    type: PropertyValue
    value: 0.865
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.134
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.66
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.581
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Ich kann es nicht länger ertragen
type: MusicRecording
duration: PT2M5S
duration ms: 125600
explicit: false
by artist: Jacques Offenbach
by artist: Jutta Vulpius
by artist: Dresdner Philharmonie
by artist: Robert Hanell
in album: Jacques Offenbach: Orpheus in der Unterwelt (QS)
  type: MusicAlbum
  date published: 1970-01-01
popularity: 0
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: DEUM70603595
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T22:28:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6cdbea8f0356aa5b3b8ca4becc99ca2321e68885a73d2413121307696526e4c0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960478
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960478
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70603595
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:30:38Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdbea8f0356aa5b3b8ca4becc99ca2321e68885a73d2413121307696526e4c0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70603595.
  date published: 2026-07-31T23:30:38Z
audio: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Ich kann es nicht länger ertragen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.168
  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: 0.616
  additional property: Energy
    type: PropertyValue
    value: 0.183
  additional property: Speechiness
    type: PropertyValue
    value: 0.131
  additional property: Acousticness
    type: PropertyValue
    value: 0.971
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.039
  additional property: Liveness
    type: PropertyValue
    value: 0.07
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.483
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.828
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Als ich einst Prinz war in Arkadien
type: MusicRecording
duration: PT2M3S
duration ms: 123400
explicit: false
by artist: Jacques Offenbach
by artist: Werner Enders
by artist: Dresdner Philharmonie
by artist: Robert Hanell
in album: Jacques Offenbach: Orpheus in der Unterwelt (QS)
  type: MusicAlbum
  date published: 1970-01-01
popularity: 0
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: DEUM70603596
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:35:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3c1b1762026e253b88baf61e20aec5c49d013ec8db04ecd873f9be47838ac63f
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/DEUM70603596
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1b1762026e253b88baf61e20aec5c49d013ec8db04ecd873f9be47838ac63f. 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/DEUM70603596.
  date published: 2026-07-08T03:20:19Z
audio: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Als ich einst Prinz war in Arkadien
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.632
  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: 0.685
  additional property: Energy
    type: PropertyValue
    value: 0.047
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.426
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.609
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Willst du partout dir ein Weibchen erringen - Ich glaubte hier etwas zu fühlen
type: MusicRecording
duration: PT8M13S
duration ms: 493560
explicit: false
by artist: Jacques Offenbach
by artist: Jutta Vulpius
by artist: Gudrun Fischer
by artist: Werner Enders
by artist: Hermann Christian Polster
by artist: Dresdner Philharmonie
by artist: Robert Hanell
in album: Jacques Offenbach: Orpheus in der Unterwelt (QS)
  type: MusicAlbum
  date published: 1970-01-01
popularity: 0
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: DEUM70603597
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T10:16:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9346da9f6f6709e47282d80a9ab8eb781b870c26b54b92e3f091e0da71f8c3f2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70603597
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9346da9f6f6709e47282d80a9ab8eb781b870c26b54b92e3f091e0da71f8c3f2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70603597.
  date published: 2026-07-31T12:24:41Z
audio: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Willst du partout dir ein Weibchen erringen - Ich glaubte hier etwas zu fühlen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.772
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.413
  additional property: Energy
    type: PropertyValue
    value: 0.073
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.925
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.201
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.272
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.472
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Jung wird man dabei!
type: MusicRecording
duration: PT3M58S
duration ms: 238706
explicit: false
by artist: Jacques Offenbach
by artist: Jutta Vulpius
by artist: Gudrun Fischer
by artist: Ruth Schob-Lipka
by artist: Friederike Apelt
by artist: Hannerose Katterfeld
by artist: Wolfgang Hellmich
by artist: Peter Schreier
by artist: Karl-Friedrich Hölzke
by artist: Hermann Christian Polster
by artist: Werner Enders
by artist: MDR Leipzig Radio Chorus
by artist: Dresdner Philharmonie
by artist: Horst Neumann
by artist: Robert Hanell
in album: Jacques Offenbach: Orpheus in der Unterwelt (QS)
  type: MusicAlbum
  date published: 1970-01-01
popularity: 1
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: DEUM70603599
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T18:50:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65a96f7b29badd8f42d40f794e9a03a4f87a780bb664179598c9d4a484a6f802
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/DEUM70603599
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a96f7b29badd8f42d40f794e9a03a4f87a780bb664179598c9d4a484a6f802. 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/DEUM70603599.
  date published: 2026-07-08T03:22:41Z
audio: Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Jung wird man dabei!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.785
  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: 0.596
  additional property: Energy
    type: PropertyValue
    value: 0.382
  additional property: Speechiness
    type: PropertyValue
    value: 0.114
  additional property: Acousticness
    type: PropertyValue
    value: 0.95
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.012
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.56
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.97
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Offenbach: Orpheus in der Unterwelt (Highlights)
type: MusicAlbum
date published: 1969-03-11
track: Orpheus in der Unterwelt: Ouvertüre
  type: MusicRecording
  duration: PT8M49S
  duration ms: 529266
  explicit: false
  by artist: Jacques Offenbach
  by artist: Dresdner Philharmonie
  by artist: Robert Hanell
  in album: Offenbach: Orpheus in der Unterwelt (Highlights)
    type: MusicAlbum
    date published: 1969-03-11
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
  isrc code: DES380012542
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T17:18:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5f17ee5a458fb206d08708144821b4b489f66c33d5723a4841cfa3f9b1bc8b6d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960441
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960441
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380012542
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T17:29:52Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f17ee5a458fb206d08708144821b4b489f66c33d5723a4841cfa3f9b1bc8b6d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380012542.
    date published: 2026-07-31T17:29:52Z
  audio: Orpheus in der Unterwelt: Ouvertüre
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 111.319
    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: 0.22
    additional property: Energy
      type: PropertyValue
      value: 0.201
    additional property: Speechiness
      type: PropertyValue
      value: 0.049
    additional property: Acousticness
      type: PropertyValue
      value: 0.822
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.705
    additional property: Liveness
      type: PropertyValue
      value: 0.162
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.131
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.889
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major