Metropolitan Opera Chorus
type: MusicGroup
genre: opera
popularity: 31
followers: 996
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce2353de32e0d15500cd6f545bfd9270273d1f7f68f52806d69d8e69e041d721
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06e7c331-8f97-47d4-b782-bb8dde57bc67.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06e7c331-8f97-47d4-b782-bb8dde57bc67.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/06e7c331-8f97-47d4-b782-bb8dde57bc67
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xce2353de32e0d15500cd6f545bfd9270273d1f7f68f52806d69d8e69e041d721","name":"Metropolitan Opera Chorus","registered_at":"2026-06-11T11:10:48Z","symbol":"NIM0009646","token_address":"0x449030df7e7c6f6ed6948e22911cdea247df0271","type":"artist","uuid":"06e7c331-8f97-47d4-b782-bb8dde57bc67"}
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 0xce2353de32e0d15500cd6f545bfd9270273d1f7f68f52806d69d8e69e041d721. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06e7c331-8f97-47d4-b782-bb8dde57bc67.json and https://artists.proofprofile.net/proofs/artist/06e7c331-8f97-47d4-b782-bb8dde57bc67.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xce2353de32e0d15500cd6f545bfd9270273d1f7f68f52806d69d8e69e041d721","name":"Metropolitan Opera Chorus","registered_at":"2026-06-11T11:10:48Z","symbol":"NIM0009646","token_address":"0x449030df7e7c6f6ed6948e22911cdea247df0271","type":"artist","uuid":"06e7c331-8f97-47d4-b782-bb8dde57bc67"}
album: Verdi: Aida (Live)
  type: MusicAlbum
  date published: 2020-12-11
album: Puccini: Turandot, SC 91 (Live)
  type: MusicAlbum
  date published: 2020-12-04
album: Wagner: Tristan und Isolde (Live)
  type: MusicAlbum
  date published: 2014-09-01
album: Giuseppe Verdi: Aida (Live)
  type: MusicAlbum
  date published: 2014-08-01
album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
  track: Das Rheingold, WWV 86A / Erste Szene: Vorspiel - Weia! Waga! Woge, du Welle!
    type: MusicRecording
    duration: PT6M44S
    duration ms: 404306
    explicit: false
    by artist: Richard Wagner
    by artist: Lisette Oropesa
    by artist: Jennifer Johnson
    by artist: Tamara Mumford
    by artist: Eric Owens
    by artist: Metropolitan Opera Orchestra
    by artist: James Levine
    in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
      type: MusicAlbum
      date published: 2012-01-01
    genre: classical
    genre: opera
    isrc code: DEN961003730
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-27T07:39:56+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4456007d822c0676551a4e6b5c6504a33e28d3e5e623965c83fec91ab218e199
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003730
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4456007d822c0676551a4e6b5c6504a33e28d3e5e623965c83fec91ab218e199. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003730 — a six-check JSON result.
      date published: 2026-07-02T03:55:08Z
    audio: Das Rheingold, WWV 86A / Erste Szene: Vorspiel - Weia! Waga! Woge, du Welle!
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 165.635
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 6
      additional property: Danceability
        type: PropertyValue
        value: 0.159
      additional property: Energy
        type: PropertyValue
        value: 0.135
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.982
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.011
      additional property: Liveness
        type: PropertyValue
        value: 0.102
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.053
      additional property: Loudness (dB)
        type: PropertyValue
        value: -21.977
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Das Rheingold, WWV 86A / Erste Szene: Fing' eine diese Faust!
    type: MusicRecording
    duration: PT2M48S
    duration ms: 168453
    explicit: false
    by artist: Richard Wagner
    by artist: Eric Owens
    by artist: Lisette Oropesa
    by artist: Jennifer Johnson
    by artist: Tamara Mumford
    by artist: Metropolitan Opera Orchestra
    by artist: James Levine
    in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
      type: MusicAlbum
      date published: 2012-01-01
    genre: classical
    genre: opera
    isrc code: DEN961003740
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T18:48:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x33f1b51519f55161d5f1d15856ae1bb10e7833aa6c59ce1203ffa0d2d27087e8
    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/DEN961003740
    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 0x33f1b51519f55161d5f1d15856ae1bb10e7833aa6c59ce1203ffa0d2d27087e8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003740 — a six-check JSON result.
      date published: 2026-07-08T03:22:41Z
    audio: Das Rheingold, WWV 86A / Erste Szene: Fing' eine diese Faust!
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.16
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      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: Das Rheingold, WWV 86A / Zweite Szene: Wotan! Gemahl! Erwache! - Vollendet ist das große Werk
  track: Das Rheingold, WWV 86A / Dritte Szene: Ihr andern harrt bis Abend hier
  track: Das Rheingold, WWV 86A / Vierte Szene: Bin ich nun frei? Wirklich frei?
  track: Das Rheingold, WWV 86A / Vierte Szene: Weiche, Wotan, weiche!
  track: Das Rheingold, WWV 86A / Vierte Szene: He da! He da! He do! - Rheingold! Rheingold!
  track: Die Walküre, WWV 86B / Erster Akt: Winterstürme wichen dem Wonnemond
  track: Die Walküre, WWV 86B / Dritter Akt: Vorspiel...Hojotoho! Hojotoho! - Ride of the Valkyries
  track: Die Walküre, WWV 86B / Dritter Akt: In festen Schlaf verschließ' ich dich
  track: Die Walküre, WWV 86B / Dritter Akt: Feuerzauber - Wer meines Speeres Spitze, fürchtet, durchschreite das Feuer
album: Beethoven: Fidelio (Live Recording 1960)
album: Wagner: Tannhauser (Recorded 1960)
album: Wagner: Götterdämmerung (Live)
album: Verdi: La traviata (Live)
album: Bizet: Carmen (Live)
album: Puccini: Madama Butterfly (Live)
album: Richard Strauss: Der Rosenkavalier (Live)
album: Verdi: Rigoletto (Live)
album: Debussy: Pelléas et Mélisande, L. 88 (Live)
album: Mozart: Le nozze di Figaro, K. 492 (Live)
album: Mussorgsky: Boris Godunov (Sung in English) [Live Recording 1956]
album: Berg: Wozzeck (Live)
album: Gounod: Faust (Live Recordings 1959)
album: Richard Strauss: Der Rosenkavalier, Op. 59, TrV 227 (Live Recordings 1946)
album: Verdi: Simon Boccanegra (Live)
album: Rossini: Il barbiere di Siviglia (Live)
album: Donizetti: Lucia di Lammermoor (Live)
album: Leoncavallo: Pagliacci (Live)
album: Orfeo ed Euridice (Live)
album: Mozart: The Magic Flute, K. 620
album: Strauss: Die Fledermaus (Remastered)
album: Strauss: Elektra, Op.58
album: Verdi: Otello (Live)
album: Verdi: Un ballo in maschera (Live Recording 1947)
album: Verdi: Il trovatore (Live)
album: Wagner: Tannhäuser (Live)
album: Wagner: Götterdämmerung (Live Recordings 1957)
album: Debussy: Pelléas et Mélisande
album: Highlights From Boris Godounov
album: Beethoven: Fidelio (Live Recording 1951)
album: Wagner: Lohengrin (Live)
album: Mozart: Le nozze di Figaro (Live Recordings 1949)
album: L'elisir d'Amore (The Elixir of Love)
album: Puccini: Madama Butterfly
album: Mozart: Don Giovanni, K. 527 (Live)
album: Il Trovatore
track: La Fanciulla del West, Act III: "Risparmiate lo scherno ... Ch'ella mi creda"
track: Il barbiere di Siviglia: Io sono docile
track: Don Pasquale / Act III: "Senz'andar lungi...La morale in tutto questo" - Live At Metropolitan Opera House, New York / 2011
track: Lucia di Lammermoor / Act III: "Il dolce suono" - "Ardon gl'incensi" - Live At Metropolitan Opera House, New York / 2011
track: Turandot, Act III: "Nessun dorma"

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 5

Danceability
type: PropertyValue
value: 0.248

Energy
type: PropertyValue
value: 0.228

Speechiness
type: PropertyValue
value: 0.048

Acousticness
type: PropertyValue
value: 0.973

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.096

Valence (Positivity)
type: PropertyValue
value: 0.28

Loudness (dB)
type: PropertyValue
value: -19.03

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Das Rheingold, WWV 86A / Zweite Szene: Wotan! Gemahl! Erwache! - Vollendet ist das große Werk
type: MusicRecording
duration: PT3M28S
duration ms: 208853
explicit: false
by artist: Richard Wagner
by artist: Stephanie Blythe
by artist: Bryn Terfel
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961003750
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T17:21:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa781310157871fa523821f2e2207853d0bb5eb5a24b487201dc396ddbc76c82a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960441
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003750
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52Z
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 0xa781310157871fa523821f2e2207853d0bb5eb5a24b487201dc396ddbc76c82a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003750 — a six-check JSON result.
  date published: 2026-07-31T17:29:52Z
audio: Das Rheingold, WWV 86A / Zweite Szene: Wotan! Gemahl! Erwache! - Vollendet ist das große Werk
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.744
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.193
  additional property: Energy
    type: PropertyValue
    value: 0.121
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.514
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.115
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.23
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das Rheingold, WWV 86A / Dritte Szene: Ihr andern harrt bis Abend hier
type: MusicRecording
duration: PT4M31S
duration ms: 271960
explicit: false
by artist: Richard Wagner
by artist: Bryn Terfel
by artist: Dwayne Croft
by artist: Adam Diegel
by artist: Stephanie Blythe
by artist: Eric Owens
by artist: Gerhard Siegel
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961003760
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:13:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9781494f2f02e375f7bb0e9da7a291b9ea2fdd41a73a7beb94214c721e2f688c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960459
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960459
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003760
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T20:22:46Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9781494f2f02e375f7bb0e9da7a291b9ea2fdd41a73a7beb94214c721e2f688c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003760 — a six-check JSON result.
  date published: 2026-07-31T20:22:46Z
audio: Das Rheingold, WWV 86A / Dritte Szene: Ihr andern harrt bis Abend hier
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.834
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.286
  additional property: Energy
    type: PropertyValue
    value: 0.348
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.962
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.428
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.103
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.202
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das Rheingold, WWV 86A / Vierte Szene: Bin ich nun frei? Wirklich frei?
type: MusicRecording
duration: PT3M54S
duration ms: 234960
explicit: false
by artist: Richard Wagner
by artist: Eric Owens
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961003770
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T13:38:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce25da771e7fae77f69ccaf990d848a8306d68f17ef273065f2e1ead224715a4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960410
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960410
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003770
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T13:50:38Z
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 0xce25da771e7fae77f69ccaf990d848a8306d68f17ef273065f2e1ead224715a4. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003770 — a six-check JSON result.
  date published: 2026-07-31T13:50:38Z
audio: Das Rheingold, WWV 86A / Vierte Szene: Bin ich nun frei? Wirklich frei?
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.621
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.285
  additional property: Energy
    type: PropertyValue
    value: 0.38
  additional property: Speechiness
    type: PropertyValue
    value: 0.101
  additional property: Acousticness
    type: PropertyValue
    value: 0.949
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.114
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.177
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.825
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das Rheingold, WWV 86A / Vierte Szene: Weiche, Wotan, weiche!
type: MusicRecording
duration: PT5M11S
duration ms: 311466
explicit: false
by artist: Richard Wagner
by artist: Patricia Bardon
by artist: Bryn Terfel
by artist: Stephanie Blythe
by artist: Adam Diegel
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961003780
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:45:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x12c11b617ccc9e0422517146269c4d6ebd8949b6e5f01d0c72e629ec0935ad5b
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/DEN961003780
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 0x12c11b617ccc9e0422517146269c4d6ebd8949b6e5f01d0c72e629ec0935ad5b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003780 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Das Rheingold, WWV 86A / Vierte Szene: Weiche, Wotan, weiche!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 160.189
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.207
  additional property: Energy
    type: PropertyValue
    value: 0.108
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.144
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.048
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.011
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Das Rheingold, WWV 86A / Vierte Szene: He da! He da! He do! - Rheingold! Rheingold!
type: MusicRecording
duration: PT11M8S
duration ms: 668853
explicit: false
by artist: Richard Wagner
by artist: Dwayne Croft
by artist: Adam Diegel
by artist: Bryn Terfel
by artist: Stephanie Blythe
by artist: Richard Croft
by artist: Lisette Oropesa
by artist: Jennifer Johnson
by artist: Tamara Mumford
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961003790
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:00:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xef695579a7d873dc267cb853cde9c6d31836f33f07b90273c66db25bc45dd77d
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/DEN961003790
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 0xef695579a7d873dc267cb853cde9c6d31836f33f07b90273c66db25bc45dd77d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961003790 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Das Rheingold, WWV 86A / Vierte Szene: He da! He da! He do! - Rheingold! Rheingold!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.093
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.185
  additional property: Energy
    type: PropertyValue
    value: 0.285
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.071
  additional property: Liveness
    type: PropertyValue
    value: 0.79
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.081
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.278
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Walküre, WWV 86B / Erster Akt: Winterstürme wichen dem Wonnemond
type: MusicRecording
duration: PT14M14S
duration ms: 854026
explicit: false
by artist: Richard Wagner
by artist: Jonas Kaufmann
by artist: Eva-Maria Westbroek
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961102110
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T07:35:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7246e6f72c9182d86cd932ebbef8f2237fa15c264d34e0830fe15c7d083a0f4e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961102110
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7246e6f72c9182d86cd932ebbef8f2237fa15c264d34e0830fe15c7d083a0f4e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961102110 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Die Walküre, WWV 86B / Erster Akt: Winterstürme wichen dem Wonnemond
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.597
  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: 0.207
  additional property: Energy
    type: PropertyValue
    value: 0.24
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.473
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.1
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.158
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Walküre, WWV 86B / Dritter Akt: Vorspiel...Hojotoho! Hojotoho! - Ride of the Valkyries
type: MusicRecording
duration: PT6M12S
duration ms: 372640
explicit: false
by artist: Richard Wagner
by artist: Kelly Cae Hogan
by artist: Molly Fillmore
by artist: Marjorie Elinor Dix
by artist: Mary Phillips
by artist: Wendy Bryn Harmer
by artist: Eve Gigliotti
by artist: Mary Ann McCormick
by artist: Lindsay Ammann
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961102140
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T21:38:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x46e7023b7cc7541f145d1fe8944f504b1bb27a5c6e2dbd73c51e887ec4829fda
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961102140
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e7023b7cc7541f145d1fe8944f504b1bb27a5c6e2dbd73c51e887ec4829fda. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961102140 — a six-check JSON result.
  date published: 2026-07-31T22:27:44Z
audio: Die Walküre, WWV 86B / Dritter Akt: Vorspiel...Hojotoho! Hojotoho! - Ride of the Valkyries
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.427
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.237
  additional property: Energy
    type: PropertyValue
    value: 0.421
  additional property: Speechiness
    type: PropertyValue
    value: 0.07
  additional property: Acousticness
    type: PropertyValue
    value: 0.977
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.228
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.451
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Walküre, WWV 86B / Dritter Akt: In festen Schlaf verschließ' ich dich
type: MusicRecording
duration: PT12M6S
duration ms: 726333
explicit: false
by artist: Richard Wagner
by artist: Bryn Terfel
by artist: Deborah Voigt
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961102150
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T18:29:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4e5b652477857fbca6a54223fa924d5996178891571484e52b4bd28f4e440a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960448
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960448
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961102150
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T18:48:12Z
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 0xe4e5b652477857fbca6a54223fa924d5996178891571484e52b4bd28f4e440a3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961102150 — a six-check JSON result.
  date published: 2026-07-31T18:48:12Z
audio: Die Walküre, WWV 86B / Dritter Akt: In festen Schlaf verschließ' ich dich
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.264
  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: 0.225
  additional property: Energy
    type: PropertyValue
    value: 0.258
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.013
  additional property: Liveness
    type: PropertyValue
    value: 0.212
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.47
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die Walküre, WWV 86B / Dritter Akt: Feuerzauber - Wer meines Speeres Spitze, fürchtet, durchschreite das Feuer
type: MusicRecording
duration: PT3M15S
duration ms: 195866
explicit: false
by artist: Richard Wagner
by artist: Bryn Terfel
by artist: Metropolitan Opera Orchestra
by artist: James Levine
in album: Twilight Of The Gods - The Ultimate Wagner Ring Collection
  type: MusicAlbum
  date published: 2012-01-01
genre: classical
genre: opera
isrc code: DEN961102160
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T14:47:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xacdd2e0f91aa413c28317eeec468bfb5e1770f0ad6498bc0e72da273732baaef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961102160
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
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 0xacdd2e0f91aa413c28317eeec468bfb5e1770f0ad6498bc0e72da273732baaef. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961102160 — a six-check JSON result.
  date published: 2026-07-31T15:20:15Z
audio: Die Walküre, WWV 86B / Dritter Akt: Feuerzauber - Wer meines Speeres Spitze, fürchtet, durchschreite das Feuer
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.876
  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: 0.14
  additional property: Energy
    type: PropertyValue
    value: 0.173
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.831
  additional property: Liveness
    type: PropertyValue
    value: 0.219
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.035
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.03
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Fidelio (Live Recording 1960)
type: MusicAlbum
date published: 2014-08-01

Wagner: Tannhauser (Recorded 1960)
type: MusicAlbum
date published: 2014-07-01

Wagner: Götterdämmerung (Live)
type: MusicAlbum
date published: 2014-08-01

Verdi: La traviata (Live)
type: MusicAlbum
date published: 2014-09-01

Bizet: Carmen (Live)
type: MusicAlbum
date published: 2014-08-01

Puccini: Madama Butterfly (Live)
type: MusicAlbum
date published: 2014-07-01

Richard Strauss: Der Rosenkavalier (Live)
type: MusicAlbum
date published: 2014-09-01

Verdi: Rigoletto (Live)
type: MusicAlbum
date published: 2014-08-01

Debussy: Pelléas et Mélisande, L. 88 (Live)
type: MusicAlbum
date published: 2014-08-01

Mozart: Le nozze di Figaro, K. 492 (Live)
type: MusicAlbum
date published: 2014-07-01

Mussorgsky: Boris Godunov (Sung in English) [Live Recording 1956]
type: MusicAlbum
date published: 2014-07-01

Berg: Wozzeck (Live)
type: MusicAlbum
date published: 2014-08-01

Gounod: Faust (Live Recordings 1959)
type: MusicAlbum
date published: 2014-09-02

Richard Strauss: Der Rosenkavalier, Op. 59, TrV 227 (Live Recordings 1946)
type: MusicAlbum
date published: 2014-08-01

Verdi: Simon Boccanegra (Live)
type: MusicAlbum
date published: 2015-02-01

Rossini: Il barbiere di Siviglia (Live)
type: MusicAlbum
date published: 2014-08-01

Donizetti: Lucia di Lammermoor (Live)
type: MusicAlbum
date published: 2014-07-01

Leoncavallo: Pagliacci (Live)
type: MusicAlbum
date published: 2014-08-01

Orfeo ed Euridice (Live)
type: MusicAlbum
date published: 2014-08-01

Mozart: The Magic Flute, K. 620
type: MusicAlbum
date published: 2022-01-07

Strauss: Die Fledermaus (Remastered)
type: MusicAlbum
date published: 2021-04-16

Strauss: Elektra, Op.58
type: MusicAlbum
date published: 2018-09-07

Verdi: Otello (Live)
type: MusicAlbum
date published: 2014-09-01

Verdi: Un ballo in maschera (Live Recording 1947)
type: MusicAlbum
date published: 2014-07-01

Verdi: Il trovatore (Live)
type: MusicAlbum
date published: 2014-07-01

Wagner: Tannhäuser (Live)
type: MusicAlbum
date published: 2015-02-01

Wagner: Götterdämmerung (Live Recordings 1957)
type: MusicAlbum
date published: 2014-08-01

Debussy: Pelléas et Mélisande
type: MusicAlbum
date published: 2014-05-23

Highlights From Boris Godounov
type: MusicAlbum
date published: 2000-01-01

Beethoven: Fidelio (Live Recording 1951)
type: MusicAlbum
date published: 2014-07-01

Wagner: Tristan und Isolde (Live)
type: MusicAlbum
date published: 2014-11-01

Wagner: Lohengrin (Live)
type: MusicAlbum
date published: 2014-11-01

Mozart: Le nozze di Figaro (Live Recordings 1949)
type: MusicAlbum
date published: 2014-07-01

L'elisir d'Amore (The Elixir of Love)
type: MusicAlbum
date published: 2012-10-01

Puccini: Madama Butterfly
type: MusicAlbum
date published: 2009-02-01

Mozart: Don Giovanni, K. 527 (Live)
type: MusicAlbum
date published: 2008-06-23

Il Trovatore
type: MusicAlbum
date published: 2000-01-01

La Fanciulla del West, Act III: "Risparmiate lo scherno ... Ch'ella mi creda"
type: MusicRecording
duration: PT4M19S
duration ms: 259346
explicit: false
by artist: Giacomo Puccini
by artist: Plácido Domingo
by artist: Kim Josephson
by artist: Sherrill Milnes
by artist: Leonard Slatkin
by artist: Metropolitan Opera Orchestra
by artist: Metropolitan Opera Chorus
in album: Plácido Domingo at the MET
  type: MusicAlbum
  date published: 2014-03-24
popularity: 16
isrc code: USY3P1400019
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T02:19:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae7c6e023f736815c715706f803b5aa06b033fbaa8752caacae4e8f15c799b9c
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/USY3P1400019
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 0xae7c6e023f736815c715706f803b5aa06b033fbaa8752caacae4e8f15c799b9c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY3P1400019 — a six-check JSON result.
  date published: 2026-06-13T13:32:09Z
audio: La Fanciulla del West, Act III: "Risparmiate lo scherno ... Ch'ella mi creda"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.077
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.215
  additional property: Energy
    type: PropertyValue
    value: 0.133
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.966
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.098
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.408
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Il barbiere di Siviglia: Io sono docile
type: MusicRecording
duration: PT3M52S
duration ms: 232666
explicit: false
by artist: Gioachino Rossini
by artist: Roberta Peters
by artist: Erich Leinsdorf
by artist: Metropolitan Opera Orchestra
by artist: Metropolitan Opera Chorus
in album: J'aime pas le classique mais ca j'aime bien
  type: MusicAlbum
  date published: 2008-12-12
popularity: 16
genre: classical
genre: opera
isrc code: USBC19607821
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T15:01:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe46c9b483f7d41bcacd3d99e2b222af79d5d6b4084879a38f2ae10b01a4dbe3e
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/USBC19607821
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 0xe46c9b483f7d41bcacd3d99e2b222af79d5d6b4084879a38f2ae10b01a4dbe3e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19607821 — a six-check JSON result.
  date published: 2026-06-13T13:32:09Z
audio: Il barbiere di Siviglia: Io sono docile
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.183
  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: 0.325
  additional property: Energy
    type: PropertyValue
    value: 0.335
  additional property: Speechiness
    type: PropertyValue
    value: 0.065
  additional property: Acousticness
    type: PropertyValue
    value: 0.962
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.378
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.811
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Il barbiere di Siviglia: Io sono docile
type: MusicRecording
duration: PT3M52S
duration ms: 232666
explicit: false
by artist: Gioachino Rossini
by artist: Roberta Peters
by artist: Erich Leinsdorf
by artist: Metropolitan Opera Orchestra
by artist: Metropolitan Opera Chorus
in album: Ich mag keine Klassik, aber das gefällt mir!
  type: MusicAlbum
  date published: 2009-11-06
popularity: 5
genre: classical
genre: opera
isrc code: USBC19607821
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T15:01:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe46c9b483f7d41bcacd3d99e2b222af79d5d6b4084879a38f2ae10b01a4dbe3e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957048
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957048
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19607821
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:18:56Z
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 0xe46c9b483f7d41bcacd3d99e2b222af79d5d6b4084879a38f2ae10b01a4dbe3e. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19607821 — a six-check JSON result.
  date published: 2026-07-07T14:18:56Z
audio: Il barbiere di Siviglia: Io sono docile
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.677
  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: 0.324
  additional property: Energy
    type: PropertyValue
    value: 0.331
  additional property: Speechiness
    type: PropertyValue
    value: 0.069
  additional property: Acousticness
    type: PropertyValue
    value: 0.959
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.394
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.781
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Pasquale / Act III: "Senz'andar lungi...La morale in tutto questo" - Live At Metropolitan Opera House, New York / 2011
type: MusicRecording
duration: PT4M3S
duration ms: 243813
explicit: false
by artist: Gaetano Donizetti
by artist: Anna Netrebko
by artist: Juan Diego Flórez
by artist: Mariusz Kwiecien
by artist: Simone Alaimo
by artist: Metropolitan Opera Orchestra
by artist: Maurizio Benini
by artist: Metropolitan Opera Chorus
in album: Anna Netrebko - Live at the Metropolitan Opera
  type: MusicAlbum
  date published: 2011-01-01
popularity: 5
genre: opera
isrc code: DEUM71102724
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T09:21:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf89536850fd1661c61f80c9d897c854a2bf8535cfa7f73f0560488afac1d74b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957048
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957048
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM71102724
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:18:56Z
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 0xf89536850fd1661c61f80c9d897c854a2bf8535cfa7f73f0560488afac1d74b1. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM71102724 — a six-check JSON result.
  date published: 2026-07-07T14:18:56Z
audio: Don Pasquale / Act III: "Senz'andar lungi...La morale in tutto questo" - Live At Metropolitan Opera House, New York / 2011
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.233
  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: 0.404
  additional property: Energy
    type: PropertyValue
    value: 0.222
  additional property: Speechiness
    type: PropertyValue
    value: 0.215
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.312
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.408
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.532
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Lucia di Lammermoor / Act III: "Il dolce suono" - "Ardon gl'incensi" - Live At Metropolitan Opera House, New York / 2011
type: MusicRecording
duration: PT12M59S
duration ms: 779333
explicit: false
by artist: Gaetano Donizetti
by artist: Anna Netrebko
by artist: Metropolitan Opera Orchestra
by artist: Marco Armiliato
by artist: Metropolitan Opera Chorus
in album: Anna Netrebko - Live at the Metropolitan Opera
  type: MusicAlbum
  date published: 2011-01-01
popularity: 5
genre: opera
isrc code: DEUM71102729
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T06:53:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d90057cb9c7bd1e679bacd9bbde826ff1493b0da80098ce46fd4d0b74b60c48
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM71102729
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 0x1d90057cb9c7bd1e679bacd9bbde826ff1493b0da80098ce46fd4d0b74b60c48. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM71102729 — a six-check JSON result.
  date published: 2026-07-06T06:56:49Z
audio: Lucia di Lammermoor / Act III: "Il dolce suono" - "Ardon gl'incensi" - Live At Metropolitan Opera House, New York / 2011
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.505
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.287
  additional property: Energy
    type: PropertyValue
    value: 0.058
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.013
  additional property: Liveness
    type: PropertyValue
    value: 0.668
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.196
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Turandot, Act III: "Nessun dorma"
type: MusicRecording
duration: PT3M15S
duration ms: 195933
explicit: false
by artist: Giacomo Puccini
by artist: Plácido Domingo
by artist: Kurt Adler
by artist: Metropolitan Opera Orchestra
by artist: Metropolitan Opera Chorus
in album: Plácido Domingo at the MET
  type: MusicAlbum
  date published: 2014-03-24
popularity: 1
isrc code: USY3P1400016
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T14:39:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4b929b6173562f2fdd168517f8f416ff0b99ffe60b44568081a9362edffc7160
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY3P1400016
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
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 0x4b929b6173562f2fdd168517f8f416ff0b99ffe60b44568081a9362edffc7160. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY3P1400016 — a six-check JSON result.
  date published: 2026-07-31T15:20:15Z
audio: Turandot, Act III: "Nessun dorma"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.357
  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: 0.268
  additional property: Energy
    type: PropertyValue
    value: 0.253
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.023
  additional property: Liveness
    type: PropertyValue
    value: 0.612
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.06
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.352
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major