Hungarian Festival Chorus
type: MusicGroup
genre: classical
genre: opera
popularity: 37
followers: 164
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74b16fdc414bdd28825acbcf235446b0d942a55873b4a3c86aa4e672c1fb8490
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/5e51fdac-6054-436a-8053-673c5027c352.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5e51fdac-6054-436a-8053-673c5027c352.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5e51fdac-6054-436a-8053-673c5027c352
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x74b16fdc414bdd28825acbcf235446b0d942a55873b4a3c86aa4e672c1fb8490","name":"Hungarian Festival Chorus","registered_at":"2026-06-11T22:04:38Z","symbol":"NIM0122375","token_address":"0x422ba82fa9ad23f41d8a04e39ba93608ef19fa5d","type":"artist","uuid":"5e51fdac-6054-436a-8053-673c5027c352"}
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 0x74b16fdc414bdd28825acbcf235446b0d942a55873b4a3c86aa4e672c1fb8490. 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/5e51fdac-6054-436a-8053-673c5027c352.json and https://artists.proofprofile.net/proofs/artist/5e51fdac-6054-436a-8053-673c5027c352.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x74b16fdc414bdd28825acbcf235446b0d942a55873b4a3c86aa4e672c1fb8490","name":"Hungarian Festival Chorus","registered_at":"2026-06-11T22:04:38Z","symbol":"NIM0122375","token_address":"0x422ba82fa9ad23f41d8a04e39ba93608ef19fa5d","type":"artist","uuid":"5e51fdac-6054-436a-8053-673c5027c352"}
album: Mozart: The Magic Flute (Highlights) – Queen of the Night Arias
  type: MusicAlbum
  date published: 2015-09-04
album: Mozart: Die Zauberflöte (Highlights)
  type: MusicAlbum
  date published: 1997-09-30
album: Great Opera
  type: MusicAlbum
  date published: 2012-05-01
album: 50 of the Best: Mozart
  type: MusicAlbum
  date published: 2011-11-15
album: Mozart: 30 of the Best
  type: MusicAlbum
  date published: 2020-04-24
album: Bach, J.S.: St. Matthew Passion
  type: MusicAlbum
  date published: 1993-12-14
album: Jesus Christ In Music
  type: MusicAlbum
  date published: 2002-01-01
album: Hallelujah! Sacred Arias And Choruses
  type: MusicAlbum
  date published: 2007-01-01
album: The Best Of Naxos 9
  type: MusicAlbum
  date published: 1995-03-23
album: A Guided Tour of the Baroque Era, Vol. 5
  type: MusicAlbum
  date published: 2013-07-09
album: The Essentials: Mozart
  type: MusicAlbum
  date published: 2016-04-29
album: Mozart: Zauberflöte (Die) (The Magic Flute)
  type: MusicAlbum
  date published: 1994-01-25
  track: The Magic Flute, K. 620: Overture
    type: MusicRecording
    duration: PT6M41S
    duration ms: 401400
    explicit: false
    by artist: Wolfgang Amadeus Mozart
    by artist: Wilfried Gahmlich
    by artist: Anna Gonda
    by artist: Hungarian Festival Chorus
    by artist: Budapest Failoni Chamber Orchestra
    by artist: Michael Halasz
    by artist: Hellen Kwon
    by artist: Lotte Leitner
    by artist: Herbert Lippert
    by artist: Elizabeth Norberg-Schulz
    by artist: Kurt Rydl
    by artist: Georg Tichy
    by artist: Julia Faulkner
    by artist: Waltraud Winsauer
    in album: Mozart: Zauberflöte (Die) (The Magic Flute)
      type: MusicAlbum
      date published: 1994-01-25
    genre: classical
    genre: classical-era
    isrc code: HKI199490101
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-04T12:03:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7414431d84c5fe09e18c823d11658b217920511535fd6dae67935a30d6614d1c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953528
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953528
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490101
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T15:41:10Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7414431d84c5fe09e18c823d11658b217920511535fd6dae67935a30d6614d1c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490101.
      date published: 2026-06-13T15:41:10Z
    audio: The Magic Flute, K. 620: Overture
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.128
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.31
      additional property: Energy
        type: PropertyValue
        value: 0.115
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.969
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.751
      additional property: Liveness
        type: PropertyValue
        value: 0.133
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.103
      additional property: Loudness (dB)
        type: PropertyValue
        value: -19.629
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: The Magic Flute, K. 620, Act I: Arie. Der Vogelfänger bin ich ja
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172440
    explicit: false
    by artist: Wolfgang Amadeus Mozart
    by artist: Wilfried Gahmlich
    by artist: Anna Gonda
    by artist: Hungarian Festival Chorus
    by artist: Budapest Failoni Chamber Orchestra
    by artist: Michael Halasz
    by artist: Hellen Kwon
    by artist: Lotte Leitner
    by artist: Herbert Lippert
    by artist: Elizabeth Norberg-Schulz
    by artist: Kurt Rydl
    by artist: Georg Tichy
    by artist: Julia Faulkner
    by artist: Waltraud Winsauer
    in album: Mozart: Zauberflöte (Die) (The Magic Flute)
      type: MusicAlbum
      date published: 1994-01-25
    genre: classical
    genre: classical-era
    isrc code: HKI199490104
    additional property: CopyrightID
    additional property: CopyrightStatus
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: The Magic Flute, K. 620, Act I: Arie. Der Vogelfänger bin ich ja
  track: The Magic Flute, K. 620: Dies Bildnis ist bezaubernd schön
  track: The Magic Flute, K. 620, Act II: Aria. Der Hölle Rache kocht in meinem Herzen
  track: The Magic Flute, K. 620, Act I: Duett. Bei Männern, welche Liebe fühlen
  track: The Magic Flute, K. 620, Act II: Ach! Ich fühl's, es ist verschwunden
  track: The Magic Flute, K. 620, Act I: Wie stark ist nicht dein Zauberton!
  track: The Magic Flute, K. 620, Act II: Marsch der Priester
album: The Ultimate Mozart Opera Album
album: A Guided Tour of the Classical Era, Vol. 2
album: German Operatic Choruses
album: 20 Most Famous Opera Pieces of All Times
album: Classical Music Car Ride
album: Classical Music Masters
album: Relax and Unwind with Classical Music
album: Classical Music Dinner Playlist
album: The Greatest Classical Music for Studying
album: The Greatest Classical Music
album: Classical Music Morning Playlist
album: 50 of the Best: J.S. Bach
album: Best of Opera, Vol. 5
album: Restaurant Classical Music Playlist
album: Hotel Lobby Classical Music Playlist
album: Booming Bass and Baritone: Best Loved Opera Arias
album: Bach: St. Matthew Passion, Vol. 2
album: Bach: St. Matthew Passion, Vol. 1
album: Classical music for Baby and mummy
album: Classics at the Movies: Thrillers
album: Famous Opera Choruses
album: Best Of Naxos 9 (The)

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-08T21:05:52+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xac71e3358daa805ef5af065f0227f5dbd673db42442ce2a94b6247098808906e

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 953528

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/953528

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490104

OTSTimestamp
type: PropertyValue
value: 2026-06-13T15:41:10Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac71e3358daa805ef5af065f0227f5dbd673db42442ce2a94b6247098808906e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490104.
date published: 2026-06-13T15:41:10Z

The Magic Flute, K. 620, Act I: Arie. Der Vogelfänger bin ich ja
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 98.975
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: 0.485
additional property: Energy
  type: PropertyValue
  value: 0.088
additional property: Speechiness
  type: PropertyValue
  value: 0.042
additional property: Acousticness
  type: PropertyValue
  value: 0.973
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.312
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.337
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.663
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

The Magic Flute, K. 620: Dies Bildnis ist bezaubernd schön
type: MusicRecording
duration: PT3M34S
duration ms: 214373
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Wilfried Gahmlich
by artist: Anna Gonda
by artist: Hungarian Festival Chorus
by artist: Budapest Failoni Chamber Orchestra
by artist: Michael Halasz
by artist: Hellen Kwon
by artist: Lotte Leitner
by artist: Herbert Lippert
by artist: Elizabeth Norberg-Schulz
by artist: Kurt Rydl
by artist: Georg Tichy
by artist: Julia Faulkner
by artist: Waltraud Winsauer
in album: Mozart: Zauberflöte (Die) (The Magic Flute)
  type: MusicAlbum
  date published: 1994-01-25
genre: classical
genre: classical-era
isrc code: HKI199490106
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T21:16:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb06ea5e8d6c5bded8b294fd7612fb14a1afb499c7441fb815c3df1b88b16956
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490106
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb06ea5e8d6c5bded8b294fd7612fb14a1afb499c7441fb815c3df1b88b16956. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490106.
  date published: 2026-06-13T15:41:10Z
audio: The Magic Flute, K. 620: Dies Bildnis ist bezaubernd schön
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.489
  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: 0.252
  additional property: Energy
    type: PropertyValue
    value: 0.109
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.091
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.792
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Magic Flute, K. 620, Act II: Aria. Der Hölle Rache kocht in meinem Herzen
type: MusicRecording
duration: PT2M51S
duration ms: 171000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Wilfried Gahmlich
by artist: Anna Gonda
by artist: Hungarian Festival Chorus
by artist: Budapest Failoni Chamber Orchestra
by artist: Michael Halasz
by artist: Hellen Kwon
by artist: Lotte Leitner
by artist: Herbert Lippert
by artist: Elizabeth Norberg-Schulz
by artist: Kurt Rydl
by artist: Georg Tichy
by artist: Julia Faulkner
by artist: Waltraud Winsauer
in album: Mozart: Zauberflöte (Die) (The Magic Flute)
  type: MusicAlbum
  date published: 1994-01-25
genre: classical
genre: classical-era
isrc code: HKI199490208
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T08:05:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ca1f93242ab74332c23515d22d541842226c49c73cefbb40ab13710d92e888b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490208
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1f93242ab74332c23515d22d541842226c49c73cefbb40ab13710d92e888b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490208.
  date published: 2026-06-13T12:53:06Z
audio: The Magic Flute, K. 620, Act II: Aria. Der Hölle Rache kocht in meinem Herzen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.781
  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: 0.433
  additional property: Energy
    type: PropertyValue
    value: 0.137
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.966
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.386
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.427
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.13
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Magic Flute, K. 620, Act I: Duett. Bei Männern, welche Liebe fühlen
type: MusicRecording
duration: PT2M56S
duration ms: 176760
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Wilfried Gahmlich
by artist: Anna Gonda
by artist: Hungarian Festival Chorus
by artist: Budapest Failoni Chamber Orchestra
by artist: Michael Halasz
by artist: Hellen Kwon
by artist: Lotte Leitner
by artist: Herbert Lippert
by artist: Elizabeth Norberg-Schulz
by artist: Kurt Rydl
by artist: Georg Tichy
by artist: Julia Faulkner
by artist: Waltraud Winsauer
in album: Mozart: Zauberflöte (Die) (The Magic Flute)
  type: MusicAlbum
  date published: 1994-01-25
genre: classical
genre: classical-era
isrc code: HKI199490113
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T18:17:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc2973c3b7fee73d357fddd371ad54e2ad7feb45817118cf3c720b1ea3a04378f
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/HKI199490113
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 0xc2973c3b7fee73d357fddd371ad54e2ad7feb45817118cf3c720b1ea3a04378f. 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/HKI199490113.
  date published: 2026-06-13T13:32:09Z
audio: The Magic Flute, K. 620, Act I: Duett. Bei Männern, welche Liebe fühlen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 169.55
  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: 0.29
  additional property: Energy
    type: PropertyValue
    value: 0.104
  additional property: Speechiness
    type: PropertyValue
    value: 0.085
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.138
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.143
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.617
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Magic Flute, K. 620, Act II: Ach! Ich fühl's, es ist verschwunden
type: MusicRecording
duration: PT4M19S
duration ms: 259000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Wilfried Gahmlich
by artist: Anna Gonda
by artist: Hungarian Festival Chorus
by artist: Budapest Failoni Chamber Orchestra
by artist: Michael Halasz
by artist: Hellen Kwon
by artist: Lotte Leitner
by artist: Herbert Lippert
by artist: Elizabeth Norberg-Schulz
by artist: Kurt Rydl
by artist: Georg Tichy
by artist: Julia Faulkner
by artist: Waltraud Winsauer
in album: Mozart: Zauberflöte (Die) (The Magic Flute)
  type: MusicAlbum
  date published: 1994-01-25
genre: classical
genre: classical-era
isrc code: HKI199490214
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T12:56:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6620b33639462e1c5469f2c48049c3e5761e0c0afde41495a0931374cad9bf6e
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/HKI199490214
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 0x6620b33639462e1c5469f2c48049c3e5761e0c0afde41495a0931374cad9bf6e. 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/HKI199490214.
  date published: 2026-06-13T13:32:09Z
audio: The Magic Flute, K. 620, Act II: Ach! Ich fühl's, es ist verschwunden
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 173.09
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.184
  additional property: Energy
    type: PropertyValue
    value: 0.033
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.145
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

The Magic Flute, K. 620, Act I: Wie stark ist nicht dein Zauberton!
type: MusicRecording
duration: PT2M45S
duration ms: 165960
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Wilfried Gahmlich
by artist: Anna Gonda
by artist: Hungarian Festival Chorus
by artist: Budapest Failoni Chamber Orchestra
by artist: Michael Halasz
by artist: Hellen Kwon
by artist: Lotte Leitner
by artist: Herbert Lippert
by artist: Elizabeth Norberg-Schulz
by artist: Kurt Rydl
by artist: Georg Tichy
by artist: Julia Faulkner
by artist: Waltraud Winsauer
in album: Mozart: Zauberflöte (Die) (The Magic Flute)
  type: MusicAlbum
  date published: 1994-01-25
genre: classical
genre: classical-era
isrc code: HKI199490116
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T03:01:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x357177cc796fb749cee6fd909bd7e050c0a025b7e3d00f949c9602856ca50d36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490116
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357177cc796fb749cee6fd909bd7e050c0a025b7e3d00f949c9602856ca50d36. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490116.
  date published: 2026-07-02T03:30:09Z
audio: The Magic Flute, K. 620, Act I: Wie stark ist nicht dein Zauberton!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.373
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.298
  additional property: Energy
    type: PropertyValue
    value: 0.076
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.977
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.505
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.195
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.814
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Magic Flute, K. 620, Act II: Marsch der Priester
type: MusicRecording
duration: PT2M35S
duration ms: 155880
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Wilfried Gahmlich
by artist: Anna Gonda
by artist: Hungarian Festival Chorus
by artist: Budapest Failoni Chamber Orchestra
by artist: Michael Halasz
by artist: Hellen Kwon
by artist: Lotte Leitner
by artist: Herbert Lippert
by artist: Elizabeth Norberg-Schulz
by artist: Kurt Rydl
by artist: Georg Tichy
by artist: Julia Faulkner
by artist: Waltraud Winsauer
in album: Mozart: Zauberflöte (Die) (The Magic Flute)
  type: MusicAlbum
  date published: 1994-01-25
genre: classical
genre: classical-era
isrc code: HKI199490121
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T17:17:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x85da8b702b8f03dc0c8f4e487241e5d7579b2756dc7c0f299bbbcb30993278d1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199490121
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 0x85da8b702b8f03dc0c8f4e487241e5d7579b2756dc7c0f299bbbcb30993278d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199490121.
  date published: 2026-06-13T12:47:07Z
audio: The Magic Flute, K. 620, Act II: Marsch der Priester
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.487
  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: 0.113
  additional property: Energy
    type: PropertyValue
    value: 0.023
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.926
  additional property: Liveness
    type: PropertyValue
    value: 0.136
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.255
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.934
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

The Ultimate Mozart Opera Album
type: MusicAlbum
date published: 2010-12-14

A Guided Tour of the Classical Era, Vol. 2
type: MusicAlbum
date published: 2013-04-09

German Operatic Choruses
type: MusicAlbum
date published: 1997-02-28
track: Lohengrin: Bridal Chorus
  type: MusicRecording
  duration: PT4M48S
  duration ms: 288080
  explicit: false
  by artist: Slovak Radio Symphony Orchestra
  by artist: Slovak Philharmonic Chorus
  by artist: Richard Wagner
  in album: German Operatic Choruses
    type: MusicAlbum
    date published: 1997-02-28
  genre: orchestra
  genre: radio-symphony
  genre: symfonicky-orchestr
  isrc code: HKI199639101
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-09T18:20:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x793dd0b97590390beb54ad15edc0dfb636878c9591d000a3d2ab32368f92252a
  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/HKI199639101
  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 0x793dd0b97590390beb54ad15edc0dfb636878c9591d000a3d2ab32368f92252a. 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/HKI199639101.
    date published: 2026-06-13T13:32:09Z
  audio: Lohengrin: Bridal Chorus
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 97.905
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.145
    additional property: Energy
      type: PropertyValue
      value: 0.093
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.991
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.283
    additional property: Liveness
      type: PropertyValue
      value: 0.087
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.078
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.39
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Die Entfuhrung Aus Dem Serail (Abduction From The Seraglio), K. 384: Final Chorus
  type: MusicRecording
  duration: PT1M26S
  duration ms: 86026
  explicit: false
  by artist: Slovak Philharmonic Chorus
  by artist: Slovak Radio Symphony Orchestra
  by artist: Wolfgang Amadeus Mozart
  by artist: C. F. Bretzner
  in album: German Operatic Choruses
    type: MusicAlbum
    date published: 1997-02-28
  isrc code: HKI199639104
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-06T18:00:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xba13bb2df0712ed95f938dbc5c96f52924754a91e68264725d0ad131e66844bc
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953515
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953515
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199639104
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T12:53:06Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13bb2df0712ed95f938dbc5c96f52924754a91e68264725d0ad131e66844bc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199639104.
    date published: 2026-06-13T12:53:06Z
  audio: Die Entfuhrung Aus Dem Serail (Abduction From The Seraglio), K. 384: Final Chorus
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.269
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.476
    additional property: Energy
      type: PropertyValue
      value: 0.406
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.477
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.334
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.479
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.875
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Der Freischutz, J. 277: Huntsmen's Chorus
  type: MusicRecording
  duration: PT2M36S
  duration ms: 156333
  explicit: false
  by artist: Carl Maria von Weber
  by artist: Slovak Radio Symphony Orchestra
  by artist: Slovak Philharmonic Chorus
  by artist: Johann Friedrich Kind
  in album: German Operatic Choruses
    type: MusicAlbum
    date published: 1997-02-28
  genre: classical
  genre: opera
  isrc code: HKI199639105
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-11T13:32:48+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Der Freischutz, J. 277: Huntsmen's Chorus
track: Die Meistersinger Von Nurnberg (The Mastersingers Of Nuremberg): Wach Auf!

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x4a1106cdcd147edba18cfc95710e87ce97cf4852169d87823261c505de11ccab

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 953520

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/953520

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199639105

OTSTimestamp
type: PropertyValue
value: 2026-06-13T13:32:09Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1106cdcd147edba18cfc95710e87ce97cf4852169d87823261c505de11ccab. 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/HKI199639105.
date published: 2026-06-13T13:32:09Z

Der Freischutz, J. 277: Huntsmen's Chorus
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 128.623
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: 0.538
additional property: Energy
  type: PropertyValue
  value: 0.229
additional property: Speechiness
  type: PropertyValue
  value: 0.033
additional property: Acousticness
  type: PropertyValue
  value: 0.989
additional property: Instrumentalness
  type: PropertyValue
  value: 0.22
additional property: Liveness
  type: PropertyValue
  value: 0.361
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.441
additional property: Loudness (dB)
  type: PropertyValue
  value: -20.18
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

Die Meistersinger Von Nurnberg (The Mastersingers Of Nuremberg): Wach Auf!
type: MusicRecording
duration: PT2M28S
duration ms: 148266
explicit: false
by artist: Slovak Radio Symphony Orchestra
by artist: Slovak Philharmonic Chorus
by artist: Richard Wagner
in album: German Operatic Choruses
  type: MusicAlbum
  date published: 1997-02-28
genre: orchestra
genre: radio-symphony
genre: symfonicky-orchestr
isrc code: HKI199639109
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T20:48:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xef33dd19a7bb5a5b460bee2592f5c34fad233f3ca6f0ca8f9a123000739e9b28
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199639109
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef33dd19a7bb5a5b460bee2592f5c34fad233f3ca6f0ca8f9a123000739e9b28. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199639109.
  date published: 2026-06-13T15:41:10Z
audio: Die Meistersinger Von Nurnberg (The Mastersingers Of Nuremberg): Wach Auf!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.126
  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: 0.187
  additional property: Energy
    type: PropertyValue
    value: 0.201
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.976
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.755
  additional property: Liveness
    type: PropertyValue
    value: 0.129
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.111
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.146
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

20 Most Famous Opera Pieces of All Times
type: MusicAlbum
date published: 2017-06-27

Classical Music Car Ride
type: MusicAlbum
date published: 2020-03-23

Classical Music Masters
type: MusicAlbum
date published: 2020-03-29

Relax and Unwind with Classical Music
type: MusicAlbum
date published: 2020-03-24

Classical Music Dinner Playlist
type: MusicAlbum
date published: 2020-03-21

The Greatest Classical Music for Studying
type: MusicAlbum
date published: 2020-03-28

The Greatest Classical Music
type: MusicAlbum
date published: 2020-03-26

Classical Music Morning Playlist
type: MusicAlbum
date published: 2020-03-30

50 of the Best: J.S. Bach
type: MusicAlbum
date published: 2011-11-15

Best of Opera, Vol. 5
type: MusicAlbum
date published: 2000-10-21

Restaurant Classical Music Playlist
type: MusicAlbum
date published: 2020-03-25

Hotel Lobby Classical Music Playlist
type: MusicAlbum
date published: 2020-03-22

Booming Bass and Baritone: Best Loved Opera Arias
type: MusicAlbum
date published: 2021-04-23

Bach: St. Matthew Passion, Vol. 2
type: MusicAlbum
date published: 2016-11-16

Bach: St. Matthew Passion, Vol. 1
type: MusicAlbum
date published: 2016-11-16

Classical music for Baby and mummy
type: MusicAlbum
date published: 2020-03-27

Classics at the Movies: Thrillers
type: MusicAlbum
date published: 2000-03-13

Famous Opera Choruses
type: MusicAlbum
date published: 2007-01-01

Best Of Naxos 9 (The)
type: MusicAlbum
date published: 1995-03-23