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type: MusicGroup
genre: opera
popularity: 20
followers: 87
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/d243e380-191a-40ef-9a98-adfca5fec334.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e49ddebda99184cb3fcd918a1abc8463af1a02089b174d7a7deb55ea93d43d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d243e380-191a-40ef-9a98-adfca5fec334.json and https://artists.proofprofile.net/proofs/artist/d243e380-191a-40ef-9a98-adfca5fec334.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T11:57:35Z
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album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
  track: Das schlaue Füchslein, JW I/9, Act I: Prelude (Live)
    type: MusicRecording
    duration: PT3M10S
    duration ms: 190502
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    by artist: Leoš Janáček
    by artist: Frankfurter Opern- und Museumsorchester
    by artist: Johannes Debus
    in album: Janáček: Das schlaue Füchslein (Live)
      type: MusicAlbum
      date published: 2019-03-08
    genre: classical
    genre: czech-classical
    genre: early-modern-classical
    genre: contemporary-classical
    genre: post-romantic-era
    isrc code: DEU921998201
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998201
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-29T11:07:37Z
    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 0x8dab2848434a2afe5557ca549c9da249ee5cc5105a6ea1667e8d4f94c603267a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEU921998201 — a six-check JSON result.
      date published: 2026-07-29T11:07:37Z
    audio: Das schlaue Füchslein, JW I/9, Act I: Prelude (Live)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.641
      additional property: Musical Key
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      additional property: Danceability
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      additional property: Valence (Positivity)
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  track: Das schlaue Füchslein, JW I/9, Act III: Prelude (Live)
    type: MusicRecording
    duration: PT2M1S
    duration ms: 121329
    explicit: false
    by artist: Leoš Janáček
    by artist: Frankfurter Opern- und Museumsorchester
    by artist: Johannes Debus
    in album: Janáček: Das schlaue Füchslein (Live)
      type: MusicAlbum
      date published: 2019-03-08
    genre: classical
    genre: czech-classical
    genre: early-modern-classical
    genre: contemporary-classical
    genre: post-romantic-era
    isrc code: DEU921998214
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998214
    additional property: OTSTimestamp
      type: PropertyValue
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac317703775a195c7b87d212fe7056dd8472e6831e47f234bce83715944e989. 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/DEU921998214 — a six-check JSON result.
      date published: 2026-07-08T03:20:19Z
    audio: Das schlaue Füchslein, JW I/9, Act III: Prelude (Live)
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 93.006
      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.475
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      additional property: Acousticness
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      additional property: Valence (Positivity)
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  track: Das schlaue Füchslein, JW I/9, Act I: Dostaneme bóřku (Live)
  track: Das schlaue Füchslein, JW I/9, Act III: Déž sem vandroval, mozeka hrála (Live)
  track: Das schlaue Füchslein, JW I/9, Act I: Proměna (Live)
  track: Das schlaue Füchslein, JW I/9, Act III: Běží liška k Táboru (Live)
  track: Das schlaue Füchslein, JW I/9, Act I: To čučíš, Lapáku? (Live)
  track: Das schlaue Füchslein, JW I/9, Act III: Proměna (Live)
  track: Das schlaue Füchslein, JW I/9, Act I: Ou, ou! (Live)
  track: Das schlaue Füchslein, JW I/9, Act III: A kde otec Pásek? (Live)
  track: Das schlaue Füchslein, JW I/9, Act I: Mělas dělat podlivá mně (Live)
  track: Das schlaue Füchslein, JW I/9, Act III: Neříkal jsem to? (Live)
  track: Das schlaue Füchslein, JW I/9, Act II: Prelude (Live)
  track: Das schlaue Füchslein, JW I/9, Act II: Ach! (Live)
  track: Das schlaue Füchslein, JW I/9, Act II: Proměna (Live)
  track: Das schlaue Füchslein, JW I/9, Act II: Ano, ve Stráni bude daleko lépe (Live)
  track: Das schlaue Füchslein, JW I/9, Act II: Buďto mám těžiště pohyblivé (Live)
  track: Das schlaue Füchslein, JW I/9, Act II: Bóžinku, ten je hezké! (Live)
  track: Das schlaue Füchslein, JW I/9, Act II: Zlatohřbítek, lišák s kroužkovými pesíky (Live)
album: Zemlinsky: 7 Songs & Chamber Symphony
album: Sibelius: Complete Works for Mixed Choir
album: Korngold: Die tote Stadt
album: Wagner: Der Frankfurter Ring
album: Summer with Sibelius
album: Sommarnatt
album: Wagner: Götterdämmerung
album: Wagner: Das Rheingold

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value: 0.797

Instrumentalness
type: PropertyValue
value: 0.873

Liveness
type: PropertyValue
value: 0.08

Valence (Positivity)
type: PropertyValue
value: 0.235

Loudness (dB)
type: PropertyValue
value: -24.456

Key Name
type: PropertyValue
value: C#

Mode Name
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value: Minor

Das schlaue Füchslein, JW I/9, Act I: Dostaneme bóřku (Live)
type: MusicRecording
duration: PT8M12S
duration ms: 492706
explicit: false
by artist: Leoš Janáček
by artist: Simon Neal
by artist: Sophia Seeling
by artist: Kassiopi Küpper
by artist: Isabel Casás-Rama
by artist: Louise Alder
by artist: Frankfurter Opern- und Museumsorchester
by artist: Unknown Artist
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998202
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T09:11:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0a993a5548ce0937dbca0b116543f47a2c8a2b2a996a668fd4f7709953ee952a
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957055
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957055
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998202
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T15:12:44Z
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 0x0a993a5548ce0937dbca0b116543f47a2c8a2b2a996a668fd4f7709953ee952a. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DEU921998202 — a six-check JSON result.
  date published: 2026-07-07T15:12:44Z
audio: Das schlaue Füchslein, JW I/9, Act I: Dostaneme bóřku (Live)
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.222
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.907
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.013
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.083
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Das schlaue Füchslein, JW I/9, Act III: Déž sem vandroval, mozeka hrála (Live)
type: MusicRecording
duration: PT5M15S
duration ms: 315146
explicit: false
by artist: Leoš Janáček
by artist: Sebastian Geyer
by artist: Simon Neal
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998215
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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  value: 2026-07-07T14:59:32+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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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf09f7b96f729969f07d197a92f8f4f459540d524f0e263feae3e3e0d5c51901. 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/DEU921998215 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Das schlaue Füchslein, JW I/9, Act III: Déž sem vandroval, mozeka hrála (Live)
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  additional property: Tempo (BPM)
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    value: 107.918
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  additional property: Mode (Major/Minor)
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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Das schlaue Füchslein, JW I/9, Act I: Proměna (Live)
type: MusicRecording
duration: PT1M54S
duration ms: 114266
explicit: false
by artist: Leoš Janáček
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998203
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-30T12:07:05+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e99953ec871a7593c5729e4092704a4df08a418dd57164a995c734a5b72bd04. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998203 — a six-check JSON result.
  date published: 2026-07-30T12:45:34Z
audio: Das schlaue Füchslein, JW I/9, Act I: Proměna (Live)
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    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.42
  additional property: Energy
    type: PropertyValue
    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.922
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.658
  additional property: Liveness
    type: PropertyValue
    value: 0.233
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.155
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.868
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Das schlaue Füchslein, JW I/9, Act III: Běží liška k Táboru (Live)
type: MusicRecording
duration: PT7M27S
duration ms: 447597
explicit: false
by artist: Leoš Janáček
by artist: Louise Alder
by artist: Jenny Carlstedt
by artist: Lilli Trosien
by artist: Sebastian Geyer
by artist: Frankfurt Opera Children's Chorus
by artist: Chor der Oper Frankfurt
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998216
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T17:44:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7199129705765241022408cd769c1a8b5091b29bf2ed67b87d286470f3810d82
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/DEU921998216
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 0x7199129705765241022408cd769c1a8b5091b29bf2ed67b87d286470f3810d82. 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/DEU921998216 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Das schlaue Füchslein, JW I/9, Act III: Běží liška k Táboru (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.47
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.275
  additional property: Energy
    type: PropertyValue
    value: 0.179
  additional property: Speechiness
    type: PropertyValue
    value: 0.092
  additional property: Acousticness
    type: PropertyValue
    value: 0.948
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.597
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.126
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.845
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Das schlaue Füchslein, JW I/9, Act I: To čučíš, Lapáku? (Live)
type: MusicRecording
duration: PT3M38S
duration ms: 218279
explicit: false
by artist: Leoš Janáček
by artist: Simon Neal
by artist: Joanna Krasuska-Motulewicz
by artist: Louise Alder
by artist: Nina Tarandek
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998204
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T02:52:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x874e8219a85748c19c367225f4e23c3d394bdec78863ffc74497603846908f32
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/DEU921998204
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 0x874e8219a85748c19c367225f4e23c3d394bdec78863ffc74497603846908f32. 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/DEU921998204 — a six-check JSON result.
  date published: 2026-07-30T03:35:13Z
audio: Das schlaue Füchslein, JW I/9, Act I: To čučíš, Lapáku? (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.498
  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: 0.365
  additional property: Energy
    type: PropertyValue
    value: 0.132
  additional property: Speechiness
    type: PropertyValue
    value: 0.277
  additional property: Acousticness
    type: PropertyValue
    value: 0.961
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.707
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.379
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.65
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das schlaue Füchslein, JW I/9, Act III: Proměna (Live)
type: MusicRecording
duration: PT2M29S
duration ms: 149007
explicit: false
by artist: Leoš Janáček
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998217
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T11:46:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe64a404cd691c989598bd3378f54742d4cfac1e2ab6c9201fea590d1d8b82297
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998217
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64a404cd691c989598bd3378f54742d4cfac1e2ab6c9201fea590d1d8b82297. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998217 — a six-check JSON result.
  date published: 2026-07-31T12:24:41Z
audio: Das schlaue Füchslein, JW I/9, Act III: Proměna (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.486
  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: 0.246
  additional property: Energy
    type: PropertyValue
    value: 0.065
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.839
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.852
  additional property: Liveness
    type: PropertyValue
    value: 0.654
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.697
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das schlaue Füchslein, JW I/9, Act I: Ou, ou! (Live)
type: MusicRecording
duration: PT3M22S
duration ms: 202019
explicit: false
by artist: Leoš Janáček
by artist: Louise Alder
by artist: Nina Tarandek
by artist: Jascha Mössle
by artist: Ioannis Germanidis
by artist: Joanna Krasuska-Motulewicz
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998205
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T12:41:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7dbc707e3d344960e766d2015bee94e9c72988caa2fc69f80f781536616870a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960259
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960259
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998205
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:51:24Z
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 0xd7dbc707e3d344960e766d2015bee94e9c72988caa2fc69f80f781536616870a. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/DEU921998205 — a six-check JSON result.
  date published: 2026-07-30T12:51:24Z
audio: Das schlaue Füchslein, JW I/9, Act I: Ou, ou! (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 151.67
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.131
  additional property: Energy
    type: PropertyValue
    value: 0.069
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.773
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.818
  additional property: Liveness
    type: PropertyValue
    value: 0.153
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.752
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das schlaue Füchslein, JW I/9, Act III: A kde otec Pásek? (Live)
type: MusicRecording
duration: PT6M23S
duration ms: 383326
explicit: false
by artist: Leoš Janáček
by artist: Simon Neal
by artist: Nora Friedrichs
by artist: Beau Gibson
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998218
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:04:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd444ba6e245120ad4e316f256ff5f2ac9a098f3334da55186cfc3355be84318a
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/DEU921998218
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 0xd444ba6e245120ad4e316f256ff5f2ac9a098f3334da55186cfc3355be84318a. 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/DEU921998218 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Das schlaue Füchslein, JW I/9, Act III: A kde otec Pásek? (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.894
  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: 0.318
  additional property: Energy
    type: PropertyValue
    value: 0.081
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.961
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.013
  additional property: Liveness
    type: PropertyValue
    value: 0.182
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.134
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.787
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das schlaue Füchslein, JW I/9, Act I: Mělas dělat podlivá mně (Live)
type: MusicRecording
duration: PT4M46S
duration ms: 286088
explicit: false
by artist: Leoš Janáček
by artist: Nina Tarandek
by artist: Britta Stallmeister
by artist: Nora Friedrichs
by artist: Louise Alder
by artist: Joanna Krasuska-Motulewicz
by artist: Simon Neal
by artist: Frankfurt Opera Children's Chorus
by artist: Chor der Oper Frankfurt
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998206
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T05:41:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbfdc054868c98ce6a636f73432a84e120141ee49981ccca256e9006fe941ead1
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/DEU921998206
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 0xbfdc054868c98ce6a636f73432a84e120141ee49981ccca256e9006fe941ead1. 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/DEU921998206 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Das schlaue Füchslein, JW I/9, Act I: Mělas dělat podlivá mně (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.335
  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: 0.395
  additional property: Energy
    type: PropertyValue
    value: 0.249
  additional property: Speechiness
    type: PropertyValue
    value: 0.129
  additional property: Acousticness
    type: PropertyValue
    value: 0.932
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.233
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.281
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.259
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das schlaue Füchslein, JW I/9, Act III: Neříkal jsem to? (Live)
type: MusicRecording
duration: PT7M0S
duration ms: 420098
explicit: false
by artist: Leoš Janáček
by artist: Simon Neal
by artist: Isabel Casás-Rama
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998219
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T21:35:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2fdd425a52cce1796bf4a4db3c942648151f0de5032bf08f0086bb0639240963
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998219
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44Z
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 0x2fdd425a52cce1796bf4a4db3c942648151f0de5032bf08f0086bb0639240963. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEU921998219 — a six-check JSON result.
  date published: 2026-07-31T22:27:44Z
audio: Das schlaue Füchslein, JW I/9, Act III: Neříkal jsem to? (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.285
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.295
  additional property: Energy
    type: PropertyValue
    value: 0.157
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.833
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.158
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.893
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das schlaue Füchslein, JW I/9, Act II: Prelude (Live)
type: MusicRecording
duration: PT1M0S
duration ms: 60585
explicit: false
by artist: Leoš Janáček
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998207
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:08:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x853b260c25414cd4e95ac274a189153945e62acb100b6a26e27ea4a454b06105
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/DEU921998207
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 0x853b260c25414cd4e95ac274a189153945e62acb100b6a26e27ea4a454b06105. 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/DEU921998207 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Das schlaue Füchslein, JW I/9, Act II: Prelude (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.05
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.236
  additional property: Energy
    type: PropertyValue
    value: 0.045
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.85
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.735
  additional property: Liveness
    type: PropertyValue
    value: 0.285
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.137
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.395
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Das schlaue Füchslein, JW I/9, Act II: Ach! (Live)
type: MusicRecording
duration: PT1M49S
duration ms: 109243
explicit: false
by artist: Leoš Janáček
by artist: Louise Alder
by artist: Magnus Baldvinsson
by artist: Frankfurt Opera Children's Chorus
by artist: Chor der Oper Frankfurt
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998208
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T08:29:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0ad76652ada3dce03172cb2d0ac34b5fb955174fe492bad8187b3543aff8258c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960229
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960229
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998208
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T08:30:10Z
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 0x0ad76652ada3dce03172cb2d0ac34b5fb955174fe492bad8187b3543aff8258c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEU921998208 — a six-check JSON result.
  date published: 2026-07-30T08:30:10Z
audio: Das schlaue Füchslein, JW I/9, Act II: Ach! (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.457
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.444
  additional property: Energy
    type: PropertyValue
    value: 0.242
  additional property: Speechiness
    type: PropertyValue
    value: 0.14
  additional property: Acousticness
    type: PropertyValue
    value: 0.962
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.669
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.377
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.781
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Das schlaue Füchslein, JW I/9, Act II: Proměna (Live)
type: MusicRecording
duration: PT1M16S
duration ms: 76507
explicit: false
by artist: Leoš Janáček
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998209
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T11:56:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x38aa2586b5b1b856825709d6c41985472588f39494e26e456f67a598ef26b9c7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960258
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960258
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998209
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:45:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aa2586b5b1b856825709d6c41985472588f39494e26e456f67a598ef26b9c7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998209 — a six-check JSON result.
  date published: 2026-07-30T12:45:34Z
audio: Das schlaue Füchslein, JW I/9, Act II: Proměna (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.641
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.399
  additional property: Energy
    type: PropertyValue
    value: 0.109
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.881
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.97
  additional property: Liveness
    type: PropertyValue
    value: 0.226
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.167
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.325
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Das schlaue Füchslein, JW I/9, Act II: Ano, ve Stráni bude daleko lépe (Live)
type: MusicRecording
duration: PT6M25S
duration ms: 385590
explicit: false
by artist: Leoš Janáček
by artist: Magnus Baldvinsson
by artist: Simon Neal
by artist: Beau Gibson
by artist: Michael McCown
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998210
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T18:22:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2dcd6fe276123a6804e9b7d71f1d6592b4186432ef3a781f4bbc67af581ed14
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/DEU921998210
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 0xa2dcd6fe276123a6804e9b7d71f1d6592b4186432ef3a781f4bbc67af581ed14. 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/DEU921998210 — a six-check JSON result.
  date published: 2026-07-30T18:46:00Z
audio: Das schlaue Füchslein, JW I/9, Act II: Ano, ve Stráni bude daleko lépe (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.983
  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: 0.284
  additional property: Energy
    type: PropertyValue
    value: 0.142
  additional property: Speechiness
    type: PropertyValue
    value: 0.093
  additional property: Acousticness
    type: PropertyValue
    value: 0.928
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.516
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.288
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.974
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das schlaue Füchslein, JW I/9, Act II: Buďto mám těžiště pohyblivé (Live)
type: MusicRecording
duration: PT6M57S
duration ms: 417105
explicit: false
by artist: Leoš Janáček
by artist: Beau Gibson
by artist: Magnus Baldvinsson
by artist: Simon Neal
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998211
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T07:04:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4040b222424dc95072e91b3f14be0bd6b74ff5720ab604d82b0afef779848716
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998211
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4040b222424dc95072e91b3f14be0bd6b74ff5720ab604d82b0afef779848716. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998211 — a six-check JSON result.
  date published: 2026-07-31T08:26:41Z
audio: Das schlaue Füchslein, JW I/9, Act II: Buďto mám těžiště pohyblivé (Live)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.056
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.285
  additional property: Energy
    type: PropertyValue
    value: 0.13
  additional property: Speechiness
    type: PropertyValue
    value: 0.076
  additional property: Acousticness
    type: PropertyValue
    value: 0.957
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.354
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.288
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.155
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Das schlaue Füchslein, JW I/9, Act II: Bóžinku, ten je hezké! (Live)
type: MusicRecording
duration: PT5M35S
duration ms: 335133
explicit: false
by artist: Leoš Janáček
by artist: Louise Alder
by artist: Jenny Carlstedt
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
in album: Janáček: Das schlaue Füchslein (Live)
  type: MusicAlbum
  date published: 2019-03-08
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEU921998212
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:12:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4f0aea4c12da077001565700ad160fa48edbda8bd493e740e4a8e27b764b0a9d
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/DEU921998212
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Das schlaue Füchslein, JW I/9, Act II: Zlatohřbítek, lišák s kroužkovými pesíky (Live)
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by artist: Jenny Carlstedt
by artist: Louise Alder
by artist: Joanna Krasuska-Motulewicz
by artist: Britta Stallmeister
by artist: Nina Tarandek
by artist: Frankfurt Opera Children's Chorus
by artist: Chor der Oper Frankfurt
by artist: Frankfurter Opern- und Museumsorchester
by artist: Johannes Debus
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genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T06:42:11Z
audio: Das schlaue Füchslein, JW I/9, Act II: Zlatohřbítek, lišák s kroužkovými pesíky (Live)
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Zemlinsky: 7 Songs & Chamber Symphony
type: MusicAlbum
date published: 2016-01-08

Sibelius: Complete Works for Mixed Choir
type: MusicAlbum
date published: 2015-03-10
track: Drömmarna, JS 64 (Dreams)
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    date published: 2015-03-10
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-31T15:59:18Z
  audio: Drömmarna, JS 64 (Dreams)
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Korngold: Die tote Stadt
type: MusicAlbum
date published: 2011-09-06
track: Die tote Stadt (The Dead City), Op. 12: Act I: Prelude - Scene 1: Behutsam! (Brigitta, Frank)
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  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
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    type: MusicAlbum
    date published: 2011-09-06
  genre: early-modern-classical
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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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)
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  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
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T15:42:38Z
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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)

Die tote Stadt (The Dead City), Op. 12: Act I Scene 2: Frank! Freund! (Paul, Frank)
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by artist: Erich Wolfgang Korngold
by artist: Klaus Florian Vogt
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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
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  date published: 2011-09-06
genre: early-modern-classical
genre: classic-soundtrack
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ea65439cbd11b7513cae913b7a4dcd95771a67df765914e77e3d458113dd2d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921194802 — a six-check JSON result.
  date published: 2026-07-29T19:35:34Z
audio: Die tote Stadt (The Dead City), Op. 12: Act I Scene 2: Frank! Freund! (Paul, Frank)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.295
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.173
  additional property: Energy
    type: PropertyValue
    value: 0.147
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.895
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.271
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.072
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.877
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die tote Stadt (The Dead City), Op. 12: Act III: Prelude
type: MusicRecording
duration: PT2M45S
duration ms: 165280
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: DEU921194817
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:30:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  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
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  date published: 2026-07-08T03:20:19Z
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Die tote Stadt (The Dead City), Op. 12: Act II Scene 3: Mein Sehnen, mein Wahnen (Fritz, Women's Choir)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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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)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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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)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:46:00Z
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Wagner: Der Frankfurter Ring
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Summer with Sibelius
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Sommarnatt
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Wagner: Götterdämmerung
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  subject of: OpenTimestamps Proof of Existence
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