Ferencz Laszlo
type: MusicGroup
popularity: 12
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0cdcaf854082f89b9a35b5f851e59e2c0b57432d7bab5a7b9b0aed064710af67
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953605
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953605
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1093558b-9ff9-4b65-bf89-d74a3bdc748c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1093558b-9ff9-4b65-bf89-d74a3bdc748c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1093558b-9ff9-4b65-bf89-d74a3bdc748c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T07:39:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0cdcaf854082f89b9a35b5f851e59e2c0b57432d7bab5a7b9b0aed064710af67","name":"Ferencz Laszlo","registered_at":"2026-06-14T06:12:24Z","symbol":"NIM0363343","token_address":"0xeaddc01eb8e2141395e64b86a1159ee5d0a0e8bf","type":"artist","uuid":"1093558b-9ff9-4b65-bf89-d74a3bdc748c"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdcaf854082f89b9a35b5f851e59e2c0b57432d7bab5a7b9b0aed064710af67. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1093558b-9ff9-4b65-bf89-d74a3bdc748c.json and https://artists.proofprofile.net/proofs/artist/1093558b-9ff9-4b65-bf89-d74a3bdc748c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T07:39:50Z
  text: {"copyright_id":"0x0cdcaf854082f89b9a35b5f851e59e2c0b57432d7bab5a7b9b0aed064710af67","name":"Ferencz Laszlo","registered_at":"2026-06-14T06:12:24Z","symbol":"NIM0363343","token_address":"0xeaddc01eb8e2141395e64b86a1159ee5d0a0e8bf","type":"artist","uuid":"1093558b-9ff9-4b65-bf89-d74a3bdc748c"}
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Elojatek
  type: MusicRecording
  duration: PT2M37S
  duration ms: 157533
  explicit: false
  by artist: Emmerich Kálmán
  by artist: Kamill Feleki
  by artist: Hanna Honthy
  by artist: Erzsebet Hazy
  by artist: Laszlo Palocz
  by artist: Robert Ratonyi
  by artist: Anna Zentay
  by artist: Gyorgy Korondy
  by artist: Laszlo Csakanyi
  by artist: Ferencz Laszlo
  by artist: Hungarian Radio and Television Chorus
  by artist: Hungarian Radio And Television Symphony Orchestra
  by artist: Tamás Bródy
  in album: Kalman: Die Csárdásfürstin
    type: MusicAlbum
    date published: 2014-11-01
  genre: fado
  isrc code: HUA251678001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-09T18:14:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7c85f3f6c659344b9f32c784f1924eeb5c2802c2ce1454ec5743480eedb1c1db
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678001
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x7c85f3f6c659344b9f32c784f1924eeb5c2802c2ce1454ec5743480eedb1c1db. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678001.
    date published: 2026-06-13T13:32:09Z
  audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Elojatek
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 149.967
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.245
    additional property: Energy
      type: PropertyValue
      value: 0.42
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.737
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.939
    additional property: Liveness
      type: PropertyValue
      value: 0.147
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.357
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.139
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Hogyha sziven kered tolem (Szilvia, Chorus)
  type: MusicRecording
  duration: PT2M41S
  duration ms: 161800
  explicit: false
  by artist: Emmerich Kálmán
  by artist: Kamill Feleki
  by artist: Hanna Honthy
  by artist: Erzsebet Hazy
  by artist: Laszlo Palocz
  by artist: Robert Ratonyi
  by artist: Anna Zentay
  by artist: Gyorgy Korondy
  by artist: Laszlo Csakanyi
  by artist: Ferencz Laszlo
  by artist: Hungarian Radio and Television Chorus
  by artist: Hungarian Radio And Television Symphony Orchestra
  by artist: Tamás Bródy
  in album: Kalman: Die Csárdásfürstin
    type: MusicAlbum
    date published: 2014-11-01
  genre: fado
  isrc code: HUA251678002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T15:33:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdfa1f44ae842a07d2ba185dd7b7416440de897c74b6c2daef653cf2505743b7f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960273
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960273
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678002
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T15:42:38Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa1f44ae842a07d2ba185dd7b7416440de897c74b6c2daef653cf2505743b7f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678002.
    date published: 2026-07-30T15:42:38Z
  audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Hogyha sziven kered tolem (Szilvia, Chorus)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 98.617
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
    additional property: Energy
    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: A lanyok, lanyok, a lanyok angyalok (Feri, Boni, Chorus)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Egy a szivem, egy a parom (Edwin, Szilvia)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Jaj, cica (Boni)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Nincs szebb, mint a szerelem, az asszony osszetor (Szilvia, Edwin, Boni)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Hajmasi Peter, Hajmasi Pal (Feri, Miska, Cecilia)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Finale (Feri, Szilvia, Boni, Miska, Chorus)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Tanckeringo (Chorus)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Tul az operencian (Stazi, Edwin)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Emlekszel meg (Szilvia, Edwin)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Hurra, hurra (Edwin, Boni, Stazi, Szilvia)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Te rongyos elet (Boni, Stazi)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Alom, alom, edes alom (Edwin, Szilvia)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Finale (All)
track: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act III: Finale (All)

Danceability
type: PropertyValue
value: 0.243

Energy
type: PropertyValue
value: 0.426

Speechiness
type: PropertyValue
value: 0.093

Acousticness
type: PropertyValue
value: 0.786

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.754

Valence (Positivity)
type: PropertyValue
value: 0.446

Loudness (dB)
type: PropertyValue
value: -16.521

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Minor

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: A lanyok, lanyok, a lanyok angyalok (Feri, Boni, Chorus)
type: MusicRecording
duration: PT3M49S
duration ms: 229133
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678003
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T08:22:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7c5821749659bf279277b7347904715e6ca7168458ccf6fed1ec6fcb0a87d236
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678003
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x7c5821749659bf279277b7347904715e6ca7168458ccf6fed1ec6fcb0a87d236. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678003.
  date published: 2026-07-02T03:30:09Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: A lanyok, lanyok, a lanyok angyalok (Feri, Boni, Chorus)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 172.522
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.39
  additional property: Energy
    type: PropertyValue
    value: 0.284
  additional property: Speechiness
    type: PropertyValue
    value: 0.086
  additional property: Acousticness
    type: PropertyValue
    value: 0.853
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.275
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.566
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.692
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Egy a szivem, egy a parom (Edwin, Szilvia)
type: MusicRecording
duration: PT5M41S
duration ms: 341826
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678004
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:11:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ac4c16f6210baf3cef59af16d6871d77a300c17dbbff45d5748be6069c14a3a
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/HUA251678004
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 0x4ac4c16f6210baf3cef59af16d6871d77a300c17dbbff45d5748be6069c14a3a. 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/HUA251678004.
  date published: 2026-07-08T03:20:19Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Egy a szivem, egy a parom (Edwin, Szilvia)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.333
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.194
  additional property: Energy
    type: PropertyValue
    value: 0.226
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.918
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.101
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.657
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Jaj, cica (Boni)
type: MusicRecording
duration: PT2M40S
duration ms: 160533
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678005
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:52:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdddcccf848767240e50d8f38378af1592319837164e871d8bda7e053e2cb92d6
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/HUA251678005
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 0xdddcccf848767240e50d8f38378af1592319837164e871d8bda7e053e2cb92d6. 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/HUA251678005.
  date published: 2026-07-08T03:20:19Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Jaj, cica (Boni)
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 141.186
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.451
  additional property: Energy
    type: PropertyValue
    value: 0.4
  additional property: Speechiness
    type: PropertyValue
    value: 0.066
  additional property: Acousticness
    type: PropertyValue
    value: 0.711
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.175
  additional property: Valence (Positivity)
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    value: 0.692
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.217
  additional property: Key Name
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    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Nincs szebb, mint a szerelem, az asszony osszetor (Szilvia, Edwin, Boni)
type: MusicRecording
duration: PT4M53S
duration ms: 293906
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678006
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:14:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xed515af0a9a743714a70d05d6ab1d37e39801ac9cf51fdee07410ca796c3aeb6
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/HUA251678006
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 0xed515af0a9a743714a70d05d6ab1d37e39801ac9cf51fdee07410ca796c3aeb6. 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/HUA251678006.
  date published: 2026-07-08T03:20:19Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Nincs szebb, mint a szerelem, az asszony osszetor (Szilvia, Edwin, Boni)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.808
  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: 0.36
  additional property: Energy
    type: PropertyValue
    value: 0.364
  additional property: Speechiness
    type: PropertyValue
    value: 0.097
  additional property: Acousticness
    type: PropertyValue
    value: 0.813
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.595
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.377
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.65
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Hajmasi Peter, Hajmasi Pal (Feri, Miska, Cecilia)
type: MusicRecording
duration: PT6M38S
duration ms: 398666
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678007
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T15:02:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5707f8c7642de43031791e8bfc7a46d652b73da6535105699d83461f67b7290f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678007
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707f8c7642de43031791e8bfc7a46d652b73da6535105699d83461f67b7290f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678007.
  date published: 2026-07-30T15:42:38Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Hajmasi Peter, Hajmasi Pal (Feri, Miska, Cecilia)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.464
  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: 0.375
  additional property: Energy
    type: PropertyValue
    value: 0.301
  additional property: Speechiness
    type: PropertyValue
    value: 0.081
  additional property: Acousticness
    type: PropertyValue
    value: 0.956
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.423
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.402
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.387
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Finale (Feri, Szilvia, Boni, Miska, Chorus)
type: MusicRecording
duration: PT6M42S
duration ms: 402933
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678008
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T11:19:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1e9be7a6e42db6e05c50068de01024b5394aa196618f7286aa81ecdf232d1203
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/HUA251678008
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 0x1e9be7a6e42db6e05c50068de01024b5394aa196618f7286aa81ecdf232d1203. 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/HUA251678008.
  date published: 2026-07-08T03:20:19Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act I: Finale (Feri, Szilvia, Boni, Miska, Chorus)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.944
  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: 0.32
  additional property: Energy
    type: PropertyValue
    value: 0.264
  additional property: Speechiness
    type: PropertyValue
    value: 0.059
  additional property: Acousticness
    type: PropertyValue
    value: 0.711
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.259
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.319
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.502
  additional property: Key Name
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    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Tanckeringo (Chorus)
type: MusicRecording
duration: PT2M44S
duration ms: 164466
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678009
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T11:22:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x759852ccfce1634dcc0acbd1cfaad55f2c76f3a7a5920de9499d95c46b7af1e7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960254
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960254
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678009
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:06:10Z
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 0x759852ccfce1634dcc0acbd1cfaad55f2c76f3a7a5920de9499d95c46b7af1e7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678009.
  date published: 2026-07-30T12:06:10Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Tanckeringo (Chorus)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.638
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.367
  additional property: Energy
    type: PropertyValue
    value: 0.226
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.858
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.091
  additional property: Liveness
    type: PropertyValue
    value: 0.153
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.545
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.607
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Tul az operencian (Stazi, Edwin)
type: MusicRecording
duration: PT3M57S
duration ms: 237360
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678010
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:35:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2eb18d5c4b6560264253c88e54490e0ede09a782ec5f1118ddfca5e0bb4e8e1
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/HUA251678010
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 0xa2eb18d5c4b6560264253c88e54490e0ede09a782ec5f1118ddfca5e0bb4e8e1. 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/HUA251678010.
  date published: 2026-07-08T03:20:19Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Tul az operencian (Stazi, Edwin)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.919
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.31
  additional property: Energy
    type: PropertyValue
    value: 0.211
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.911
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.119
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.387
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.458
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Emlekszel meg (Szilvia, Edwin)
type: MusicRecording
duration: PT6M11S
duration ms: 371106
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678011
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T17:18:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9f96288ecb2f6e12664e7b7db6742935f51535b8010af6b81007d4184870f9b3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960284
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960284
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678011
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T17:23:26Z
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 0x9f96288ecb2f6e12664e7b7db6742935f51535b8010af6b81007d4184870f9b3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HUA251678011.
  date published: 2026-07-30T17:23:26Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Emlekszel meg (Szilvia, Edwin)
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  additional property: Tempo (BPM)
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    value: 108.078
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.238
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
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    value: 0.787
  additional property: Instrumentalness
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    value: 0.004
  additional property: Liveness
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  additional property: Valence (Positivity)
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    value: 0.219
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.824
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Hurra, hurra (Edwin, Boni, Stazi, Szilvia)
type: MusicRecording
duration: PT3M51S
duration ms: 231000
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678012
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:29:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x08bde90a2bc0530562efdd0eb8d57f442de658e7a08c468616342808a212e03c
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 960468
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960468
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678012
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T21:25:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bde90a2bc0530562efdd0eb8d57f442de658e7a08c468616342808a212e03c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678012.
  date published: 2026-07-31T21:25:57Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Hurra, hurra (Edwin, Boni, Stazi, Szilvia)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 144.236
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.427
  additional property: Energy
    type: PropertyValue
    value: 0.348
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0.171
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.534
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.77
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Te rongyos elet (Boni, Stazi)
type: MusicRecording
duration: PT3M16S
duration ms: 196293
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678013
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:23:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x281d511bcb9a8e5711fed076036f34f06872bdb77055ac4dd660269175494ef7
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/HUA251678013
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 0x281d511bcb9a8e5711fed076036f34f06872bdb77055ac4dd660269175494ef7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678013.
  date published: 2026-07-07T18:39:05Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Te rongyos elet (Boni, Stazi)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.745
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.436
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.328
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.307
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.077
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Alom, alom, edes alom (Edwin, Szilvia)
type: MusicRecording
duration: PT3M10S
duration ms: 190906
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678014
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T15:17:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfcaacc7bfa35090ed983bd2b6903f2f7941cbc28a543f130ad68c6339ba8b051
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678014
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaacc7bfa35090ed983bd2b6903f2f7941cbc28a543f130ad68c6339ba8b051. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678014.
  date published: 2026-07-30T15:42:38Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Alom, alom, edes alom (Edwin, Szilvia)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.325
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.29
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.438
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.488
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Finale (All)
type: MusicRecording
duration: PT7M9S
duration ms: 429533
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678015
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:39:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x84db3b9bdb918df8b095ae313cb41b494d21039de4d8808b439d5f14bf52726a
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/HUA251678015
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 0x84db3b9bdb918df8b095ae313cb41b494d21039de4d8808b439d5f14bf52726a. 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/HUA251678015.
  date published: 2026-07-08T03:20:19Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act II: Finale (All)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.655
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.328
  additional property: Energy
    type: PropertyValue
    value: 0.32
  additional property: Speechiness
    type: PropertyValue
    value: 0.095
  additional property: Acousticness
    type: PropertyValue
    value: 0.881
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.367
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.165
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.304
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act III: Finale (All)
type: MusicRecording
duration: PT7M31S
duration ms: 451000
explicit: false
by artist: Emmerich Kálmán
by artist: Kamill Feleki
by artist: Hanna Honthy
by artist: Erzsebet Hazy
by artist: Laszlo Palocz
by artist: Robert Ratonyi
by artist: Anna Zentay
by artist: Gyorgy Korondy
by artist: Laszlo Csakanyi
by artist: Ferencz Laszlo
by artist: Hungarian Radio and Television Chorus
by artist: Hungarian Radio And Television Symphony Orchestra
by artist: Tamás Bródy
in album: Kalman: Die Csárdásfürstin
  type: MusicAlbum
  date published: 2014-11-01
genre: fado
isrc code: HUA251678016
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T19:07:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x78e8f3baee995cae7b3b11e0211810e9db85dab47b22e76cb85d5793d53cce11
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678016
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e8f3baee995cae7b3b11e0211810e9db85dab47b22e76cb85d5793d53cce11. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251678016.
  date published: 2026-07-08T03:22:41Z
audio: Die Csardasfurstin (The Gypsy Princess) (Sung in Hungarian): Act III: Finale (All)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.672
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.563
  additional property: Energy
    type: PropertyValue
    value: 0.257
  additional property: Speechiness
    type: PropertyValue
    value: 0.69
  additional property: Acousticness
    type: PropertyValue
    value: 0.809
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.503
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.353
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.741
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major