Lena Horne & Michel LeGrand
type: MusicGroup
genre: vocal jazz
popularity: 4
followers: 110
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9169123d-5c92-4cb3-8fed-9ecef5b2861f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9169123d-5c92-4cb3-8fed-9ecef5b2861f.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-19T03:22:39Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2058534fa52aad7ed4cdc30e7edfd912c834a5d1077d98c45ec5fe283cd305. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9169123d-5c92-4cb3-8fed-9ecef5b2861f.json and https://artists.proofprofile.net/proofs/artist/9169123d-5c92-4cb3-8fed-9ecef5b2861f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x3f2058534fa52aad7ed4cdc30e7edfd912c834a5d1077d98c45ec5fe283cd305","name":"Lena Horne & Michel LeGrand","registered_at":"2026-06-17T16:22:36Z","symbol":"NIM1451394","token_address":"0x7b2848d29ad323b4ef3991b93c63b980f7c795aa","type":"artist","uuid":"9169123d-5c92-4cb3-8fed-9ecef5b2861f"}
album: Lena & Michel
  type: MusicAlbum
  date published: 2005-09-20
  track: I Will Wait For You
    type: MusicRecording
    duration: PT3M43S
    duration ms: 223800
    explicit: false
    by artist: Lena Horne & Michel LeGrand
    in album: Lena & Michel
      type: MusicAlbum
      date published: 2005-09-20
    genre: vocal jazz
    isrc code: USA560597375
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560597375
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T08:32:19Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa737feeb63980969a69b5fe19dab5ff219bfe72257cbd823e96a85ff9f867cf6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560597375.
      date published: 2026-07-16T08:32:19Z
    audio: I Will Wait For You
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 117.384
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.46
      additional property: Energy
        type: PropertyValue
        value: 0.531
      additional property: Speechiness
        type: PropertyValue
        value: 0.088
      additional property: Acousticness
        type: PropertyValue
        value: 0.802
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.006
      additional property: Liveness
        type: PropertyValue
        value: 0.219
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.549
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.262
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor