Sunday Jazz Cafe Lounge
type: MusicGroup
popularity: 21
followers: 1575
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
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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 0xa4ef9377d8275ab71c674fc6bcfc1868a46fa3c00f1b9a0494365e97d7f4d213. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa832b9e-3239-4259-8f48-3f2b2a76c3c8.json and https://artists.proofprofile.net/proofs/artist/fa832b9e-3239-4259-8f48-3f2b2a76c3c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xa4ef9377d8275ab71c674fc6bcfc1868a46fa3c00f1b9a0494365e97d7f4d213","name":"Sunday Jazz Cafe Lounge","registered_at":"2026-06-12T14:16:07Z","symbol":"NIM0322693","token_address":"0x9f76db1e3b218504e9a74e8e6978c93b5a029cb6","type":"artist","uuid":"fa832b9e-3239-4259-8f48-3f2b2a76c3c8"}
album: Sunday Morning Jazz
  type: MusicAlbum
  date published: 2020-11-03
  track: Sunday Morning Jazz
    type: MusicRecording
    duration: PT2M13S
    duration ms: 133839
    explicit: false
    by artist: Sunday Jazz Cafe Lounge
    in album: Sunday Morning Jazz
      type: MusicAlbum
      date published: 2020-11-03
    isrc code: DEWD62001058
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
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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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfdb0f3ed00a711e7fbb88ca38e38ee7135ef0e72ae480581a2ae14fa64b35b. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEWD62001058.
      date published: 2026-07-18T00:52:36Z
    audio: Sunday Morning Jazz
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.993
      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: 0.69
      additional property: Energy
        type: PropertyValue
        value: 0.339
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.78
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.916
      additional property: Liveness
        type: PropertyValue
        value: 0.081
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.428
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.485
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sunday Morning Cafe (Finest Weekend Jazz Music)
  type: MusicAlbum
  date published: 2021-05-27
album: Sunday Jazz Café
  type: MusicAlbum
  date published: 2022-06-20
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2025-01-06
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  type: MusicAlbum
  date published: 2025-01-20
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  type: MusicAlbum
  date published: 2025-01-20
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  type: MusicAlbum
  date published: 2025-02-03
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2025-04-07
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  type: MusicAlbum
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  type: MusicAlbum
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