Arnold Östman
type: MusicGroup
genre: opera
popularity: 16
followers: 298
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c538c389-d60b-4985-a78f-52a7ee5339d0
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bb90196463e0dd381683136b149171bd9b44dc2b9d4f55d1605ad0df1f6274. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c538c389-d60b-4985-a78f-52a7ee5339d0.json and https://artists.proofprofile.net/proofs/artist/c538c389-d60b-4985-a78f-52a7ee5339d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T10:33:29Z
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album: A To Z Of Opera
  type: MusicAlbum
  date published: 2000-11-03
  track: Lakmé: Blumenduett (Lara Croft Tomb Raider): Lakme, Act I: Dome epais, "Flower Duet"
    type: MusicRecording
    duration: PT5M26S
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    by artist: Léo Delibes
    by artist: Adriana Kohútková
    by artist: Denisa Šlepkovská
    by artist: Slovak Radio Symphony Orchestra
    by artist: Johannes Wildner
    in album: A To Z Of Opera
      type: MusicAlbum
      date published: 2000-11-03
    popularity: 17
    genre: classical
    isrc code: HKI190023811
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190023811
    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 0xe82040ec077a426481435df6c980ca915963e9d3b04c7839260775c665623a48. 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/HKI190023811.
      date published: 2026-07-02T03:30:09Z
    audio: Lakmé: Blumenduett (Lara Croft Tomb Raider): Lakme, Act I: Dome epais, "Flower Duet"
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.255
      additional property: Musical Key
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        value: 11
      additional property: Mode (Major/Minor)
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        value: 1
      additional property: Time Signature
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        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.302
      additional property: Energy
        type: PropertyValue
        value: 0.041
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.968
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.075
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.039
      additional property: Loudness (dB)
        type: PropertyValue
        value: -27.233
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Mozart: Schatten und Licht
  type: MusicAlbum
  date published: 2015-02-03
album: A Guided Tour of the Classical Era, Vol. 1
  type: MusicAlbum
  date published: 2013-04-09
album: Art & Music: Canaletto - Music of His Time
  type: MusicAlbum
  date published: 2005-09-01
album: Mozart: Great Operas
  type: MusicAlbum
  date published: 2002-09-01
track: Die Zauberflöte, K.620 / Act 2: "Ach, ich fühl's"
  type: MusicRecording
  duration: PT3M25S
  duration ms: 205733
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Barbara Bonney
  by artist: The Drottningholm Court Theatre Orchestra
  by artist: Arnold Östman
  in album: Barbara Bonney - The Radiant Voice of Barbara Bonney
    type: MusicAlbum
    date published: 2001-01-01
  popularity: 7
  genre: classical
  genre: classical-era
  isrc code: GBBBA9250021
  additional property: CopyrightID
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    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: https://explorer.copyrightchains.com/tx/0x852c47867255416b86431df22a8b6c5b45f2730c901f0fe1549e9cb28541e374
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA9250021
  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 0x852c47867255416b86431df22a8b6c5b45f2730c901f0fe1549e9cb28541e374. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA9250021.
    date published: 2026-07-02T03:55:08Z
  audio: Die Zauberflöte, K.620 / Act 2: "Ach, ich fühl's"
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 101.734
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
    additional property: Danceability
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    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
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    additional property: Mode Name

Time Signature
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value: 5

Danceability
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value: 0.19

Energy
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value: 0.006

Speechiness
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value: 0.067

Acousticness
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value: 0.979

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.16

Valence (Positivity)
type: PropertyValue
value: 0.039

Loudness (dB)
type: PropertyValue
value: -32.668

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major