Noir Café
type: MusicGroup
popularity: 8
followers: 41
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc390b8718b54a90769bcd0ca469aa3b2d829eee0b55a2f6d3bf9f08fb7c7ab67
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953879
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953879
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/09d9ca6e-d321-4d97-b764-fbc5fdb8f54b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/09d9ca6e-d321-4d97-b764-fbc5fdb8f54b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/09d9ca6e-d321-4d97-b764-fbc5fdb8f54b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc390b8718b54a90769bcd0ca469aa3b2d829eee0b55a2f6d3bf9f08fb7c7ab67","name":"Noir Café","registered_at":"2026-06-15T16:56:28Z","symbol":"NIM0772323","token_address":"0xe6141912af19ae1570e54d0e29ac24c21d4ab2d5","type":"artist","uuid":"09d9ca6e-d321-4d97-b764-fbc5fdb8f54b"}
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc390b8718b54a90769bcd0ca469aa3b2d829eee0b55a2f6d3bf9f08fb7c7ab67. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09d9ca6e-d321-4d97-b764-fbc5fdb8f54b.json and https://artists.proofprofile.net/proofs/artist/09d9ca6e-d321-4d97-b764-fbc5fdb8f54b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:57:35Z
  text: {"copyright_id":"0xc390b8718b54a90769bcd0ca469aa3b2d829eee0b55a2f6d3bf9f08fb7c7ab67","name":"Noir Café","registered_at":"2026-06-15T16:56:28Z","symbol":"NIM0772323","token_address":"0xe6141912af19ae1570e54d0e29ac24c21d4ab2d5","type":"artist","uuid":"09d9ca6e-d321-4d97-b764-fbc5fdb8f54b"}
album: Café Noir
  type: MusicAlbum
  date published: 2022-12-20
  track: Café Noir
    type: MusicRecording
    duration: PT1M43S
    duration ms: 103380
    explicit: false
    by artist: Noir Café
    in album: Café Noir
      type: MusicAlbum
      date published: 2022-12-20
    isrc code: GX8LE2296378
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T21:49:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9cef63b890194765f7e53c63273623b2eb6edca3db33197d3b232136068c96fa
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958621
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958621
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8LE2296378
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T22:59:44Z
    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 0x9cef63b890194765f7e53c63273623b2eb6edca3db33197d3b232136068c96fa. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GX8LE2296378.
      date published: 2026-07-18T22:59:44Z
    audio: Café Noir
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.982
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.815
      additional property: Energy
        type: PropertyValue
        value: 0.058
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.871
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.693
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.393
      additional property: Loudness (dB)
        type: PropertyValue
        value: -25.614
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor