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type: MusicGroup
genre: avant-garde
genre: opera
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-20T08:57:02Z
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track: Das schlaue Füchslein, JW I/9, Act I: Mělas dělat podlivá mně (Live)
track: Das schlaue Füchslein, JW I/9, Act I: To čučíš, Lapáku? (Live)
track: Das schlaue Füchslein, JW I/9, Act I: Ou, ou! (Live)
track: Das schlaue Füchslein, JW I/9, Act II: Zlatohřbítek, lišák s kroužkovými pesíky (Live)

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
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additional property: CopyrightRegisteredAt
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  value: 2026-07-07T05:41:30+00:00
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additional property: OTSBitcoinBlockVerifyURL
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998206.
  date published: 2026-07-08T03:20:19Z
audio: Das schlaue Füchslein, JW I/9, Act I: Mělas dělat podlivá mně (Live)
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  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.335
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
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  additional property: Valence (Positivity)
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    value: 0.281
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  additional property: Key Name
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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
subject of: OpenTimestamps Proof of Existence
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  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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998204.
  date published: 2026-07-30T03:35:13Z
audio: Das schlaue Füchslein, JW I/9, Act I: To čučíš, Lapáku? (Live)
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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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isrc code: DEU921998204
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

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
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998205.
  date published: 2026-07-30T12:51:24Z
audio: Das schlaue Füchslein, JW I/9, Act I: Ou, ou! (Live)
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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isrc code: DEU921998205
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998205
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960259
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:51:24+00:00
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

Das schlaue Füchslein, JW I/9, Act II: Zlatohřbítek, lišák s kroužkovými pesíky (Live)
type: MusicRecording
duration: PT11M52S
duration ms: 712584
explicit: false
by artist: Leoš Janáček
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
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580d4ef8eed1f6a9e06e888d13798b42f73e9f8da4a6c406dd8f274630b759fc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998213.
  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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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.369
  additional property: Energy
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    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.082
  additional property: Acousticness
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    value: 0.931
  additional property: Instrumentalness
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  additional property: Liveness
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    value: 0.078
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    value: -23.434
  additional property: Key Name
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    value: C#
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isrc code: DEU921998213
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921998213
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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