John Keenan
type: MusicGroup
genre: opera
popularity: 9
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/253b63da-383d-4cca-98f5-043ff99795a6.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/253b63da-383d-4cca-98f5-043ff99795a6.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/253b63da-383d-4cca-98f5-043ff99795a6
additional property: OTSTimestamp
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  value: 2026-06-16T14:18:37Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8239c78529877a3161fe3cb73b9d8f2c31595c6bdb585a7a4514975dff986958. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/253b63da-383d-4cca-98f5-043ff99795a6.json and https://artists.proofprofile.net/proofs/artist/253b63da-383d-4cca-98f5-043ff99795a6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T14:18:37Z
  text: {"copyright_id":"0x8239c78529877a3161fe3cb73b9d8f2c31595c6bdb585a7a4514975dff986958","name":"John Keenan","registered_at":"2026-06-16T02:35:34Z","symbol":"NIM0910530","token_address":"0xdc6fcfb9db2d46a0a4419ed94ed50b3ecbbf1947","type":"artist","uuid":"253b63da-383d-4cca-98f5-043ff99795a6"}
album: Hell No
  type: MusicAlbum
  date published: 2005-01-01
album: Fool's Crusade
  type: MusicAlbum
  date published: 2007-07-27
track: Le nozze di Figaro, K.492 / Act 1: Giovani liete, fiori spargete
  type: MusicRecording
  duration: PT1M7S
  duration ms: 67666
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Metropolitan Opera Orchestra
  by artist: James Levine
  by artist: Metropolitan Opera Chorus
  by artist: John Keenan
  in album: Mozart: Le Nozze di Figaro
    type: MusicAlbum
    date published: 1991-01-01
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: DEF059030407
  additional property: CopyrightID
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    type: PropertyValue
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    value: 956302
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    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/DEF059030407
  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 0x3abef1e8a83a391c063d79c7cf93c093dda03e19b03b17bf7b7ef9fcece27eef. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030407 — a six-check JSON result.
    date published: 2026-07-02T03:30:09Z
  audio: Le nozze di Figaro, K.492 / Act 1: Giovani liete, fiori spargete
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 164.914
    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: 0.194
    additional property: Energy
      type: PropertyValue
      value: 0.145
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.969
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.064
    additional property: Liveness
      type: PropertyValue
      value: 0.332
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.461
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.203
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Le nozze di Figaro, K.492 / Act 1: Giovani liete, fiori spargete (Coro)
  type: MusicRecording
  duration: PT0M54S
  duration ms: 54186
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Metropolitan Opera Orchestra
  by artist: James Levine
  by artist: Metropolitan Opera Chorus
  by artist: John Keenan
  in album: Mozart: Le Nozze di Figaro
    type: MusicAlbum
    date published: 1991-01-01
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: DEF059030435
  additional property: CopyrightID
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    type: PropertyValue
    value: registered
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    value: 2026-06-23T09:34:40+00:00
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  additional property: OTSHash
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030435
  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 0xc490c310ccf78090db328f4670ca7674a18367623791655701521819a96a2aef. 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/DEF059030435 — a six-check JSON result.
    date published: 2026-07-02T03:55:08Z
  audio: Le nozze di Figaro, K.492 / Act 1: Giovani liete, fiori spargete (Coro)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 82.216
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
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      value: 1
    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

Time Signature
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value: 5

Danceability
type: PropertyValue
value: 0.294

Energy
type: PropertyValue
value: 0.171

Speechiness
type: PropertyValue
value: 0.03

Acousticness
type: PropertyValue
value: 0.971

Instrumentalness
type: PropertyValue
value: 0.036

Liveness
type: PropertyValue
value: 0.273

Valence (Positivity)
type: PropertyValue
value: 0.667

Loudness (dB)
type: PropertyValue
value: -20.383

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major