JLT - Johan Leijonhufvud Trio
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popularity: 3
followers: 427
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additional property: OTSVerifyInstructions
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  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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-21T04:36:58Z
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album: The Johan Leijonhufvud Trio Speaks the Local Bebop
  type: MusicAlbum
  date published: 2011-01-01
album: The Johan Leijonhufvud Trio Speaks the Local Bebop
  type: MusicAlbum
  date published: 2011-01-01
album: The Marten
  type: MusicAlbum
  date published: 2021-08-13
album: Harlem Nocturne
  type: MusicAlbum
  date published: 2021-08-27
album: Harlem Nocturne
  type: MusicAlbum
  date published: 2021-09-10
album: Harlem Nocturne
  type: MusicAlbum
  date published: 2021-09-10
album: Harlem Nocturne
  type: MusicAlbum
  date published: 2021-09-10
  track: The Song My Lady Sings
  track: Harlem Nocturne
album: Harlem Nocturne
  type: MusicAlbum
  date published: 2021-10-06
album: Il Lupo
  type: MusicAlbum
  date published: 2023-08-11
album: Major Åman
  type: MusicAlbum
  date published: 2023-08-25
album: Nifty Fifty
  type: MusicAlbum
  date published: 2023-09-15

The Song My Lady Sings
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duration: PT4M39S
duration ms: 279838
explicit: false
by artist: JLT - Johan Leijonhufvud Trio
in album: Harlem Nocturne
  type: MusicAlbum
  date published: 2021-09-10
isrc code: DEWT22100016
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additional property: OTSTimestamp
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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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2341bb74708ecfc3f4426dfd6e34be0576975c7ffc76760c07975e9cf2647e5a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWT22100016.
  date published: 2026-07-08T03:22:41Z
audio: The Song My Lady Sings
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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    type: PropertyValue
    value: 5
  additional property: Danceability
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.211
  additional property: Loudness (dB)
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    value: -24.038
  additional property: Key Name
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Harlem Nocturne
type: MusicRecording
duration: PT4M21S
duration ms: 261877
explicit: false
by artist: JLT - Johan Leijonhufvud Trio
in album: Harlem Nocturne
  type: MusicAlbum
  date published: 2021-09-10
isrc code: DEWT22100019
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additional property: CopyrightStatus
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additional property: OTSTimestamp
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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
additional property: ProofProfileEvidenceStatus
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  value: verified-cc-db-prod
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62589c4c6c9c8f04638090df4033ad52b9f658e716552c1df3da12a2aacf68d7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWT22100019.
  date published: 2026-07-08T03:22:41Z
audio: Harlem Nocturne
  type: AudioObject
  additional property: Tempo (BPM)
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    type: PropertyValue
    value: 5
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  additional property: Time Signature
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    value: 5
  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Loudness (dB)
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  additional property: Key Name
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