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album: Arensky, A.S.: Raphael [Opera] / Songs and Romances
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album: Rachmaninov: Bells (The) / Symphonic Dances
  type: MusicAlbum
  date published: 2007-01-01
album: Rachmaninoff: The Bells & Symphonic Dances
  type: MusicAlbum
  date published: 2018-02-02
album: DG Concerts LA 2006/2007 - Shadow of Stalin - Shostakovich / Mosolov
  type: MusicAlbum
  date published: 2007-11-06
album: 40 Tracks for 40 Years: Delos' 40th Anniversary Celebration!
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  track: Going to Chicago Blues
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      date published: 2026-07-31T21:25:57Z
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album: Opera Gala - 35Th Anniversary (A Tribute To Delos Founder Amelia S. Haygood)
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album: Korngold: Die tote Stadt
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      date published: 2026-07-22T17:48:40Z
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  track: Die tote Stadt (The Dead City), Op. 12: Act II Scene 4: Du machst mir eine Szene? (Marietta, Paul)
  track: Die tote Stadt (The Dead City), Op. 12: Act I Scene 2: Frank! Freund! (Paul, Frank)
  track: Die tote Stadt (The Dead City), Op. 12: Act III: Prelude
  track: Die tote Stadt (The Dead City), Op. 12: Act I Scene 3: Nur deiner harr ich, niemals Verlorne! (Paul)
  track: Die tote Stadt (The Dead City), Op. 12: Act III Scene 1: Dich such ich, Bild! (Marietta, Children's Choir)
  track: Die tote Stadt (The Dead City), Op. 12: Act I Scene 4: Rosen, so ist's rechts! (Paul, Brigitta)
  track: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Du hier? (Paul, Marietta)
  track: Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Wunderbar! (Paul, Marietta)
  track: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: O susser Heiland mein (Choir, Children's Choir, Paul)
  track: Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Gluck, das mir verblieb (Marietta, Paul)
  track: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Du bist ja fromm! (Marietta, Paul)
  track: Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Das dumme Lied, es hat Sie ganz verzaubert (Marietta, Gaston, Juliette, Lucienne, Paul)
  track: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Und der Erste, der Lieb mich gelehrt (Marietta, Paul)
  track: Die tote Stadt (The Dead City), Op. 12: Act I Scene 6: Da bist du ja, Marie, ich wusste es (Paul, Marie)
  track: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Bin ich nicht schon … (Marietta, Paul)
  track: Die tote Stadt (The Dead City), Op. 12: Act II: Prelude
  track: Die tote Stadt (The Dead City), Op. 12: Act III Scene 3: Die Tote, wo, lag sie nicht hier … (Paul, Brigitta, Marietta, Frank)
  track: Die tote Stadt (The Dead City), Op. 12: Act II Scene 1: Was ward aus mir? (Paul, Brigitta)
  track: Die tote Stadt (The Dead City), Op. 12: Act II Scene 2: Wohin!? … Frank, du? (Paul, Frank)
  track: Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Schaume, tolles Tanzerblut (Julienne, Lucienne, Victorin, Graf Albert, Fritz, Marietta)
  track: Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Mein Sehnen, mein Wahnen (Fritz, Women's Choir)
  track: Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Bravo, guter Pierrot (Marietta, Julienne, Lucienne, Victorin, Graf Albert, Fritz)
  track: Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Halt ein! Du eine auferstandne Tote?! (Paul, Marietta, Victorin, Graf Albert, Fritz)
album: Prokofiev: Operas
album: Prokofiev: Semyon Kotko

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  value: https://explorer.copyrightchains.com/tx/0xdd5db44f4f7268a2920cc56e6ba8cea40801dbdab6782e6f268325f4c01bf7dc
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/DEU921194817
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 0xdd5db44f4f7268a2920cc56e6ba8cea40801dbdab6782e6f268325f4c01bf7dc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194817 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act III: Prelude
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 144.906
  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: 0.328
  additional property: Energy
    type: PropertyValue
    value: 0.249
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.8
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.909
  additional property: Liveness
    type: PropertyValue
    value: 0.83
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.28
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.128
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act I Scene 3: Nur deiner harr ich, niemals Verlorne! (Paul)
type: MusicRecording
duration: PT2M6S
duration ms: 126133
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194803
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:22:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x453c0a33795de3fbe96af392c11b53d6bacf4a95890434d30cdade2b68d38369
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957041
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957041
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194803
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T13:25:45Z
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 0x453c0a33795de3fbe96af392c11b53d6bacf4a95890434d30cdade2b68d38369. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194803 — a six-check JSON result.
  date published: 2026-07-07T13:25:45Z
audio: Die tote Stadt (The Dead City), Op. 12: Act I Scene 3: Nur deiner harr ich, niemals Verlorne! (Paul)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.724
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.153
  additional property: Energy
    type: PropertyValue
    value: 0.147
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.851
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.036
  additional property: Liveness
    type: PropertyValue
    value: 0.245
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.118
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.44
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act III Scene 1: Dich such ich, Bild! (Marietta, Children's Choir)
type: MusicRecording
duration: PT3M56S
duration ms: 236800
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194818
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:41:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9f8258dac29aa662f3e8716559edd642eadecf81020c7a92b31d907da8771f11
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/DEU921194818
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 0x9f8258dac29aa662f3e8716559edd642eadecf81020c7a92b31d907da8771f11. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194818 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act III Scene 1: Dich such ich, Bild! (Marietta, Children's Choir)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 160.935
  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: 0.164
  additional property: Energy
    type: PropertyValue
    value: 0.141
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.887
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.006
  additional property: Liveness
    type: PropertyValue
    value: 0.262
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.062
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.985
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die tote Stadt (The Dead City), Op. 12: Act I Scene 4: Rosen, so ist's rechts! (Paul, Brigitta)
type: MusicRecording
duration: PT1M34S
duration ms: 94706
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194804
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:18:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe2a6eeee60e2e4f450f11983df73f759ea3874cd0574992296c96d3465eb9d85
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/DEU921194804
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 0xe2a6eeee60e2e4f450f11983df73f759ea3874cd0574992296c96d3465eb9d85. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194804 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act I Scene 4: Rosen, so ist's rechts! (Paul, Brigitta)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.85
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.379
  additional property: Energy
    type: PropertyValue
    value: 0.366
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.888
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.534
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.139
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.484
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Du hier? (Paul, Marietta)
type: MusicRecording
duration: PT3M19S
duration ms: 199880
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194819
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T09:26:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa962c9b2701f547e0763e4c6e921eec2b3777cec12eef33ec1924e58de21db0b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960240
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960240
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194819
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:57:33Z
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 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 0xa962c9b2701f547e0763e4c6e921eec2b3777cec12eef33ec1924e58de21db0b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194819 — a six-check JSON result.
  date published: 2026-07-30T09:57:33Z
audio: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Du hier? (Paul, Marietta)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.302
  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: 0.303
  additional property: Energy
    type: PropertyValue
    value: 0.218
  additional property: Speechiness
    type: PropertyValue
    value: 0.071
  additional property: Acousticness
    type: PropertyValue
    value: 0.855
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.258
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.918
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Wunderbar! (Paul, Marietta)
type: MusicRecording
duration: PT4M54S
duration ms: 294506
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194805
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:16:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf342fd4054fae59f75e587ce5ab862ac506d1dd06bd12c936911596fce9706ae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194805
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
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 0xf342fd4054fae59f75e587ce5ab862ac506d1dd06bd12c936911596fce9706ae. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194805 — a six-check JSON result.
  date published: 2026-07-07T18:39:05Z
audio: Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Wunderbar! (Paul, Marietta)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.2
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.285
  additional property: Energy
    type: PropertyValue
    value: 0.277
  additional property: Speechiness
    type: PropertyValue
    value: 0.079
  additional property: Acousticness
    type: PropertyValue
    value: 0.859
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.264
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.115
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.958
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: O susser Heiland mein (Choir, Children's Choir, Paul)
type: MusicRecording
duration: PT6M36S
duration ms: 396053
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194820
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T09:23:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9704642f5ab067d26bba43a44c1722d4fb756c0f7f35b155491f926c8b060e1f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960381
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960381
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194820
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:50:11Z
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 0x9704642f5ab067d26bba43a44c1722d4fb756c0f7f35b155491f926c8b060e1f. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194820 — a six-check JSON result.
  date published: 2026-07-31T09:50:11Z
audio: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: O susser Heiland mein (Choir, Children's Choir, Paul)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.355
  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: 0.215
  additional property: Energy
    type: PropertyValue
    value: 0.237
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.75
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.026
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.118
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.41
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Gluck, das mir verblieb (Marietta, Paul)
type: MusicRecording
duration: PT5M28S
duration ms: 328160
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194806
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T01:23:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1c2dcc43840da5a41d54e1da056dcee7b18cab79b163b3c85c03203ee73853bc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194806
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
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 0x1c2dcc43840da5a41d54e1da056dcee7b18cab79b163b3c85c03203ee73853bc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194806 — a six-check JSON result.
  date published: 2026-06-13T12:53:06Z
audio: Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Gluck, das mir verblieb (Marietta, Paul)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.176
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.093
  additional property: Energy
    type: PropertyValue
    value: 0.103
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.922
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.342
  additional property: Liveness
    type: PropertyValue
    value: 0.17
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.058
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.982
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Du bist ja fromm! (Marietta, Paul)
type: MusicRecording
duration: PT2M58S
duration ms: 178173
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194821
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T09:56:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d0c5b41caee430ef96064ddb7d99948472e3e1620265472de454b5c70ae1eea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960241
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960241
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194821
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:58:01Z
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 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 0x4d0c5b41caee430ef96064ddb7d99948472e3e1620265472de454b5c70ae1eea. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194821 — a six-check JSON result.
  date published: 2026-07-30T09:58:01Z
audio: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Du bist ja fromm! (Marietta, Paul)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.399
  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: 0.275
  additional property: Energy
    type: PropertyValue
    value: 0.231
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.814
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.233
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.084
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.896
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Das dumme Lied, es hat Sie ganz verzaubert (Marietta, Gaston, Juliette, Lucienne, Paul)
type: MusicRecording
duration: PT5M49S
duration ms: 349813
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194807
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T03:16:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3887d01fbef834e16ca14305699f762981da9c611e096678d59bc64a865ac9e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960203
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960203
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194807
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T03:35:13Z
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 0xf3887d01fbef834e16ca14305699f762981da9c611e096678d59bc64a865ac9e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194807 — a six-check JSON result.
  date published: 2026-07-30T03:35:13Z
audio: Die tote Stadt (The Dead City), Op. 12: Act I Scene 5: Das dumme Lied, es hat Sie ganz verzaubert (Marietta, Gaston, Juliette, Lucienne, Paul)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.294
  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: 0.303
  additional property: Energy
    type: PropertyValue
    value: 0.267
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.863
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.718
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.125
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.634
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Und der Erste, der Lieb mich gelehrt (Marietta, Paul)
type: MusicRecording
duration: PT4M45S
duration ms: 285093
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194822
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T11:50:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c74d25f887bcfa575e935b8f05086c0d6efc2a372cd741549eec596111bade8
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/DEU921194822
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 0x4c74d25f887bcfa575e935b8f05086c0d6efc2a372cd741549eec596111bade8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194822 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Und der Erste, der Lieb mich gelehrt (Marietta, Paul)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 170.353
  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: 0.188
  additional property: Energy
    type: PropertyValue
    value: 0.234
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.928
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.021
  additional property: Liveness
    type: PropertyValue
    value: 0.734
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.052
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.462
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act I Scene 6: Da bist du ja, Marie, ich wusste es (Paul, Marie)
type: MusicRecording
duration: PT8M24S
duration ms: 504520
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194808
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:50:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x23c9888a15bebc97df51d364babd8cb228a321e67f48270abf5f10f7fb5bf01c
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/DEU921194808
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 0x23c9888a15bebc97df51d364babd8cb228a321e67f48270abf5f10f7fb5bf01c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194808 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act I Scene 6: Da bist du ja, Marie, ich wusste es (Paul, Marie)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.419
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.213
  additional property: Energy
    type: PropertyValue
    value: 0.102
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.896
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.504
  additional property: Liveness
    type: PropertyValue
    value: 0.391
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.869
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Bin ich nicht schon … (Marietta, Paul)
type: MusicRecording
duration: PT4M28S
duration ms: 268360
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194823
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T20:40:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c15a8486f449a96f961c580a0584ef0e70f381139df41fd5da406c7eda073a4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960314
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960314
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194823
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T21:00:46Z
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 0x4c15a8486f449a96f961c580a0584ef0e70f381139df41fd5da406c7eda073a4. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194823 — a six-check JSON result.
  date published: 2026-07-30T21:00:46Z
audio: Die tote Stadt (The Dead City), Op. 12: Act III Scene 2: Bin ich nicht schon … (Marietta, Paul)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.489
  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: 0.34
  additional property: Energy
    type: PropertyValue
    value: 0.363
  additional property: Speechiness
    type: PropertyValue
    value: 0.081
  additional property: Acousticness
    type: PropertyValue
    value: 0.818
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.255
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.686
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act II: Prelude
type: MusicRecording
duration: PT0M56S
duration ms: 56520
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194809
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T08:39:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf01dca7cc5e120963e2eff91d7d688ffa00e21498dfc8c1c5e41d266e7db5c42
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960236
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960236
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194809
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:37:10Z
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 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 0xf01dca7cc5e120963e2eff91d7d688ffa00e21498dfc8c1c5e41d266e7db5c42. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194809 — a six-check JSON result.
  date published: 2026-07-30T09:37:10Z
audio: Die tote Stadt (The Dead City), Op. 12: Act II: Prelude
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 134.063
  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: 0.24
  additional property: Energy
    type: PropertyValue
    value: 0.309
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.342
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.693
  additional property: Liveness
    type: PropertyValue
    value: 0.354
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.138
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.11
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act III Scene 3: Die Tote, wo, lag sie nicht hier … (Paul, Brigitta, Marietta, Frank)
type: MusicRecording
duration: PT12M29S
duration ms: 749853
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194824
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:10:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x690189e427c9c2447607605e9f0a99784923f1fb9a27f7e91090c200ab0aed79
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957067
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957067
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194824
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T16:54:37Z
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 0x690189e427c9c2447607605e9f0a99784923f1fb9a27f7e91090c200ab0aed79. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194824 — a six-check JSON result.
  date published: 2026-07-07T16:54:37Z
audio: Die tote Stadt (The Dead City), Op. 12: Act III Scene 3: Die Tote, wo, lag sie nicht hier … (Paul, Brigitta, Marietta, Frank)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.219
  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: 0.104
  additional property: Energy
    type: PropertyValue
    value: 0.334
  additional property: Speechiness
    type: PropertyValue
    value: 0.177
  additional property: Acousticness
    type: PropertyValue
    value: 0.781
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.198
  additional property: Liveness
    type: PropertyValue
    value: 0.943
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.088
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.424
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act II Scene 1: Was ward aus mir? (Paul, Brigitta)
type: MusicRecording
duration: PT6M26S
duration ms: 386133
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194810
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T01:50:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa23b3600b63c623f1fb32fff73a784bbbfcf31cc266cafe4d68e332d24f25a0f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960193
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960193
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194810
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T02:05:19Z
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 0xa23b3600b63c623f1fb32fff73a784bbbfcf31cc266cafe4d68e332d24f25a0f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194810 — a six-check JSON result.
  date published: 2026-07-30T02:05:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act II Scene 1: Was ward aus mir? (Paul, Brigitta)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.948
  additional property: Musical Key
    type: PropertyValue
    value: 6
  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: 0.109
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.881
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.049
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.845
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act II Scene 2: Wohin!? … Frank, du? (Paul, Frank)
type: MusicRecording
duration: PT3M25S
duration ms: 205733
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194811
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:08:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfdb2634e5b656e59dc4ebeb9388cd4ebe899db26bd62521b496cd1e8943cf451
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/DEU921194811
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 0xfdb2634e5b656e59dc4ebeb9388cd4ebe899db26bd62521b496cd1e8943cf451. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194811 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act II Scene 2: Wohin!? … Frank, du? (Paul, Frank)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.532
  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: 0.311
  additional property: Energy
    type: PropertyValue
    value: 0.294
  additional property: Speechiness
    type: PropertyValue
    value: 0.073
  additional property: Acousticness
    type: PropertyValue
    value: 0.74
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.113
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.326
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.779
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Schaume, tolles Tanzerblut (Julienne, Lucienne, Victorin, Graf Albert, Fritz, Marietta)
type: MusicRecording
duration: PT8M58S
duration ms: 538386
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194812
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:03:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x52ca216c1162491e4f87aba0266da43f5627c39068da1694e862881e9e8bfe01
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/DEU921194812
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 0x52ca216c1162491e4f87aba0266da43f5627c39068da1694e862881e9e8bfe01. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194812 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Schaume, tolles Tanzerblut (Julienne, Lucienne, Victorin, Graf Albert, Fritz, Marietta)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.82
  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: 0.33
  additional property: Energy
    type: PropertyValue
    value: 0.267
  additional property: Speechiness
    type: PropertyValue
    value: 0.084
  additional property: Acousticness
    type: PropertyValue
    value: 0.894
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.107
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.144
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.914
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Mein Sehnen, mein Wahnen (Fritz, Women's Choir)
type: MusicRecording
duration: PT3M58S
duration ms: 238933
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194813
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T02:43:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd37ea7dd2062c3e8cc986cd1acd430a5506d85b190bea0140a1014860c1ed972
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/DEU921194813
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ea7dd2062c3e8cc986cd1acd430a5506d85b190bea0140a1014860c1ed972. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194813 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Mein Sehnen, mein Wahnen (Fritz, Women's Choir)
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  additional property: Tempo (BPM)
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    value: 164.657
  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
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    value: 0.147
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  additional property: Acousticness
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    value: 0.917
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.029
  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.163
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.809
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    value: C#
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Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Bravo, guter Pierrot (Marietta, Julienne, Lucienne, Victorin, Graf Albert, Fritz)
type: MusicRecording
duration: PT2M44S
duration ms: 164093
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194814
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:46:30+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194814
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 0xf4911636b16487abb376eb3d33620f194eee0064a75ff3cd1d6717372f459532. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194814 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Bravo, guter Pierrot (Marietta, Julienne, Lucienne, Victorin, Graf Albert, Fritz)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.851
  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: 0.358
  additional property: Energy
    type: PropertyValue
    value: 0.316
  additional property: Speechiness
    type: PropertyValue
    value: 0.155
  additional property: Acousticness
    type: PropertyValue
    value: 0.916
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.685
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.195
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.369
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
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Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Halt ein! Du eine auferstandne Tote?! (Paul, Marietta, Victorin, Graf Albert, Fritz)
type: MusicRecording
duration: PT3M53S
duration ms: 233960
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
by artist: Tatiana Pavlovskaya
by artist: Michael Nagy
by artist: Hedwig Fassbender
by artist: Anna Ryberg
by artist: Jenny Carlstedt
by artist: Julian Prégardien
by artist: Hans-Jurgen Lazar
by artist: Frankfurt Opera Chorus
by artist: Frankfurt Opera Children's Chorus
by artist: Frankfurt Opera and Museum Orchestra
by artist: Sebastian Weigle
in album: Korngold: Die tote Stadt
  type: MusicAlbum
  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
isrc code: DEU921194815
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T17:45:34+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x0dca625a92919fe7d90bd5867488569e94cbb367e6847787241f77d333e63226
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960294
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960294
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194815
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:46:00Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dca625a92919fe7d90bd5867488569e94cbb367e6847787241f77d333e63226. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194815 — a six-check JSON result.
  date published: 2026-07-30T18:46:00Z
audio: Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Halt ein! Du eine auferstandne Tote?! (Paul, Marietta, Victorin, Graf Albert, Fritz)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.962
  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: 0.289
  additional property: Energy
    type: PropertyValue
    value: 0.296
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.694
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.446
  additional property: Liveness
    type: PropertyValue
    value: 0.151
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.116
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.768
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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Prokofiev: Operas
type: MusicAlbum
date published: 2010-01-01

Prokofiev: Semyon Kotko
type: MusicAlbum
date published: 2000-01-01