The Cromagnon Band
type: MusicGroup
genre: nu jazz
popularity: 9
followers: 1207
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/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/491f93a3-25d9-4f5d-965b-7fba4b7c46fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/491f93a3-25d9-4f5d-965b-7fba4b7c46fa.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/491f93a3-25d9-4f5d-965b-7fba4b7c46fa
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 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 0xb57703d5c47c94802f34178d7b62a1936f84e7c290e0bc62c107b0812bba39ed. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/491f93a3-25d9-4f5d-965b-7fba4b7c46fa.json and https://artists.proofprofile.net/proofs/artist/491f93a3-25d9-4f5d-965b-7fba4b7c46fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xb57703d5c47c94802f34178d7b62a1936f84e7c290e0bc62c107b0812bba39ed","name":"The Cromagnon Band","registered_at":"2026-06-16T15:23:41Z","symbol":"NIM1093871","token_address":"0xd1fd34da08caed4d93843209fefeec61022e8c5c","type":"artist","uuid":"491f93a3-25d9-4f5d-965b-7fba4b7c46fa"}
album: Dismantle
  type: MusicAlbum
  date published: 2022-05-26
album: Bad Night / Quadrant
  type: MusicAlbum
  date published: 2024-08-02
album: Thunder Perfect
  type: MusicAlbum
  date published: 2019-10-28
album: Green Smoke
  type: MusicAlbum
  date published: 2019-10-14
album: Tiny & Big Soundtrack
  type: MusicAlbum
  date published: 2012-06-04
album: Soul Jazz Records presents KALEIDOSCOPE - New Spirits Known and Unknown
  type: MusicAlbum
  date published: 2020-07-17
  track: Untitled
    type: MusicRecording
    duration: PT3M13S
    duration ms: 193133
    explicit: false
    by artist: Makaya McCraven
    in album: Soul Jazz Records presents KALEIDOSCOPE - New Spirits Known and Unknown
      type: MusicAlbum
      date published: 2020-07-17
    popularity: 7
    genre: jazz
    genre: free-jazz
    genre: indie-jazz
    genre: nu-jazz
    isrc code: QM84B1403014
    additional property: CopyrightID
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    additional property: OTSHash
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957046
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM84B1403014
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-07T14:04:01Z
    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 0x40afeb0618bff6b17905f6cbafdaec74d46966cbc879dceb2afe9f1a6924ad5a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM84B1403014.
      date published: 2026-07-07T14:04:01Z
    audio: Untitled
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.529
      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: 0.435
      additional property: Energy
        type: PropertyValue
        value: 0.72
      additional property: Speechiness
        type: PropertyValue
        value: 0.081
      additional property: Acousticness
        type: PropertyValue
        value: 0.105
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.819
      additional property: Liveness
        type: PropertyValue
        value: 0.193
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.277
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.725
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Assembly
  type: MusicAlbum
  date published: 2021-07-26