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type: MusicGroup
popularity: 10
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fb3597af-11b2-4563-a314-b99d9a83fdd8.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/fb3597af-11b2-4563-a314-b99d9a83fdd8.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fb3597af-11b2-4563-a314-b99d9a83fdd8
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57db0330a2118e836c409daebd580e02d311bf39412bb97709a8d33386ccfea. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb3597af-11b2-4563-a314-b99d9a83fdd8.json and https://artists.proofprofile.net/proofs/artist/fb3597af-11b2-4563-a314-b99d9a83fdd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
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album: Bizet: Les Pêcheurs de perles (1950)
  type: MusicAlbum
  date published: 2014-07-01
album: Karl Schmitt-Walter, Vol. 1: Opera, Operetta and Song
  type: MusicAlbum
  date published: 2013-01-29
album: Im Reich der Operette, Vol. 4 (Favoriten - Raritäten - Entdeckungen)
  type: MusicAlbum
  date published: 2012-02-22
album: Im Reich der Operette, Vol. 3 (Favoriten - Raritäten - Entdeckungen)
  type: MusicAlbum
  date published: 2012-02-08
album: Meister der Operette: Emmerich Kálmán
  type: MusicAlbum
  date published: 2015-03-13
album: Operetten: Gala
  type: MusicAlbum
  date published: 2015-11-06
  track: Die Csardasfurstin (The Gypsy Princess), Act II: Duet: Tanzen mochte ich
    type: MusicRecording
    duration: PT2M40S
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    by artist: Ruth-Margret Putz
    by artist: Heinz Hoppe
    by artist: Berlin Municipal Opera Orchestra
    by artist: Hansgeorg Otto
    in album: Operetten: Gala
      type: MusicAlbum
      date published: 2015-11-06
    popularity: 25
    genre: fado
    isrc code: DEAD61402501
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    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/DEAD61402501
    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 0x5baf890912e3e068ac71483de1e52b516f11d66ca36e743d9107dcd72a273d64. 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/DEAD61402501.
      date published: 2026-06-13T13:32:09Z
    audio: Die Csardasfurstin (The Gypsy Princess), Act II: Duet: Tanzen mochte ich
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  track: Der Zigeunerbaron, Act II: Entrance: Her die Hand, es muss ja sein
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    by artist: Hermann Prey
    by artist: Philharmonia Chorus
    by artist: Philharmonia Orchestra
    by artist: Otto Ackermann
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      type: MusicAlbum
      date published: 2015-11-06
    popularity: 2
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    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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    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/DEAD61402502
    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 0x5154af0417706be809414ff14e74a88f163b216e9442b5de2ba776f5ecc6bac3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61402502.
      date published: 2026-07-31T12:24:41Z
    audio: Der Zigeunerbaron, Act II: Entrance: Her die Hand, es muss ja sein
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Musical Key
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      additional property: Liveness
      additional property: Valence (Positivity)
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  track: Der Vetter aus Dingsda, Act I: Ich bin nur ein armer Wandergesell
  track: Marietta: Warte, warte nur ein Weilchen
  track: Die Csardasfurstin (The Gypsy Princess), Act II: Machen wir's den Schwalben nach
  track: Eine Nacht in Venedig (A Night in Venice), Act I: Komm in die Gondel
album: Im Reich der Operette, Vol. 1 (Favoriten - Raritäten - Entdeckungen)
album: Salongsmusik nr 2 (Salon Music)
album: Man müsste Klavier spielen können” – Die schönsten Melodien von Friedrich Schröder in Originalaufnahmen (1937-1943)
album: Tonfilm-Schlager
album: Dein ist mein ganzes Herz (Die schönsten Melodien aus Schlager, Tonfilm und Operette)
album: 40 Most Beautiful Classical Masterpieces
album: Singer Portrait: Jean Löhe
album: Karl Schmitt-Walter, Vol. 2: Popular Songs and Film
album: Im Reich der Operette, Vol. 2 (Favoriten - Raritäten - Entdeckungen)
album: Meister der Operette: Johann Strauss
album: Lehár: Das Land des Lächelns & Other Operetta Excerpts
album: Schwarzkopf, Elizabeth: Operetta Arias
album: Lehár: The World of Operetta
album: Lehàr: The World of Operetta
album: Wagner: Choruses from The Flying Dutchman & Lohengrin
album: Choruses From German Opera
album: Operettenklänge (Stereo Version)
album: Handel: Largo - Massenet: Méditation de Thaïs - Gounod: Ave Maria - Single (Mono Version)
album: Wagner: Chœurs célèbres (Mono Version)
album: Lehár: Pages célèbres (Mono Version)
album: Wagner, Verdi: Chœurs d'opéras célèbres (Mono Version)
album: A Johann Strauss Celebration - Telefunken Legacy
album: Berté, Abraham & Dostal : Operettas
album: Im Reich der Operette, Vol. 9 (Favoriten - Raritäten - Entdeckungen)
album: Fairy Tales and Legends
album: Operetten Schätze, Vol. 11
album: Escale à Berlin (Mono version)
album: Glückliches neues Jahr (Die schönsten deutschen Lieder um ins neue Jahr zu starten)
album: From Paris to Vienna Vol 9
album: Bizet: Les pêcheurs de perles (Sung in German) [Recorded 1950]
album: Zeit für Operette
album: Weber: Pages célèbres du Freischütz (Mono Version)

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value: 5

Danceability
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Energy
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Acousticness
type: PropertyValue
value: 0.99

Instrumentalness
type: PropertyValue
value: 0.179

Liveness
type: PropertyValue
value: 0.239

Valence (Positivity)
type: PropertyValue
value: 0.694

Loudness (dB)
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value: -14.931

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor

Der Vetter aus Dingsda, Act I: Ich bin nur ein armer Wandergesell
type: MusicRecording
duration: PT3M10S
duration ms: 190186
explicit: false
by artist: Eduard Künneke
by artist: Peter Anders
by artist: Franz Marszalek Orchestra
by artist: Franz Marszalek
in album: Operetten: Gala
  type: MusicAlbum
  date published: 2015-11-06
popularity: 3
isrc code: DEAD61402503
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T08:22:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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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/DEAD61402503
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 0x97a8aaed1da2bc463c94cb114e2899a62e788da05eda950e43487024ae85dcde. 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/DEAD61402503.
  date published: 2026-07-08T03:20:19Z
audio: Der Vetter aus Dingsda, Act I: Ich bin nur ein armer Wandergesell
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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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
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Marietta: Warte, warte nur ein Weilchen
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duration: PT2M57S
duration ms: 177946
explicit: false
by artist: Rudolf Scherfling
by artist: Wilfried Kruger Orchestra
by artist: Ina-Elisabeth Brosow
by artist: Wilfried Krüger
in album: Operetten: Gala
  type: MusicAlbum
  date published: 2015-11-06
popularity: 4
isrc code: DEAD61402504
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61402504
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 0xeb5dcdad3e9f7e6bff6839dde9e60268a21743103257c0356af336d2270c6709. 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/DEAD61402504.
  date published: 2026-07-08T03:20:19Z
audio: Marietta: Warte, warte nur ein Weilchen
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  additional property: Tempo (BPM)
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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: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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    type: PropertyValue
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Die Csardasfurstin (The Gypsy Princess), Act II: Machen wir's den Schwalben nach
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duration: PT4M31S
duration ms: 271386
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by artist: Emmerich Kálmán
by artist: Margot Guillaume
by artist: Rupert Glawitsch
by artist: Northwest German Radio Symphony Orchestra
by artist: Harry Herrmann
in album: Operetten: Gala
  type: MusicAlbum
  date published: 2015-11-06
popularity: 3
genre: fado
isrc code: DEAD61402505
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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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
  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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc24961964a5ec56a682ae1b55686614ca8afd43f9728350e2bb78dd08e2a58. 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/DEAD61402505.
  date published: 2026-07-08T03:20:19Z
audio: Die Csardasfurstin (The Gypsy Princess), Act II: Machen wir's den Schwalben nach
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Im Reich der Operette, Vol. 1 (Favoriten - Raritäten - Entdeckungen)
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Salongsmusik nr 2 (Salon Music)
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Tonfilm-Schlager
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Dein ist mein ganzes Herz (Die schönsten Melodien aus Schlager, Tonfilm und Operette)
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track: Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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track: Elgar: 5 Pomp and Circumstance Marches, Op. 39: No. 1 in D Major
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Elgar: 5 Pomp and Circumstance Marches, Op. 39: No. 1 in D Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Elgar: 5 Pomp and Circumstance Marches, Op. 39: No. 1 in D Major
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Grieg: Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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by artist: Lawrence Foster
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Grieg: Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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Saint-Saëns: Le carnaval des animaux, R 125: XIII. Le cygne
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Saint-Saëns: Le carnaval des animaux, R 125: XIII. Le cygne
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Wagner : Lohengrin : Act 3 "Treulich geführt ziehet dahin" [Chorus]
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by artist: Hansgeorg Otto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T04:47:22Z
audio: Wagner : Lohengrin : Act 3 "Treulich geführt ziehet dahin" [Chorus]
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Tárrega : Recuerdos de la Alhambra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T05:15:54Z
audio: Tárrega : Recuerdos de la Alhambra
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Tchaikovsky: Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso - Allegro con spirito (Excerpt)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Tchaikovsky: Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso - Allegro con spirito (Excerpt)
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Tchaikovsky: 1812 Overture in E-Flat Major, Op. 49 (Excerpt)
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subject of: OpenTimestamps Proof of Existence
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