MARCOO BLACkk
type: MusicGroup
popularity: 3
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x663d2ab6dc51f3632fa0ce2224cca0194002b7cac071c57c88e5c90891eefef1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
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/91c16fba-96e0-47d1-ad11-3055c1083372.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91c16fba-96e0-47d1-ad11-3055c1083372.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/91c16fba-96e0-47d1-ad11-3055c1083372
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x663d2ab6dc51f3632fa0ce2224cca0194002b7cac071c57c88e5c90891eefef1","name":"MARCOO BLACkk","registered_at":"2026-06-17T16:30:40Z","symbol":"NIM1453319","token_address":"0x8e48ce4b51612e6d34493b426d58e7f7564053b3","type":"artist","uuid":"91c16fba-96e0-47d1-ad11-3055c1083372"}
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663d2ab6dc51f3632fa0ce2224cca0194002b7cac071c57c88e5c90891eefef1. 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/91c16fba-96e0-47d1-ad11-3055c1083372.json and https://artists.proofprofile.net/proofs/artist/91c16fba-96e0-47d1-ad11-3055c1083372.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x663d2ab6dc51f3632fa0ce2224cca0194002b7cac071c57c88e5c90891eefef1","name":"MARCOO BLACkk","registered_at":"2026-06-17T16:30:40Z","symbol":"NIM1453319","token_address":"0x8e48ce4b51612e6d34493b426d58e7f7564053b3","type":"artist","uuid":"91c16fba-96e0-47d1-ad11-3055c1083372"}
album: No Hand Outs
  type: MusicAlbum
  date published: 2020-10-14
album: BURKAIN
  type: MusicAlbum
  date published: 2023-02-25
album: THE BAG
  type: MusicAlbum
  date published: 2023-03-17
album: FREESTYLE(Funk Flex)
  type: MusicAlbum
  date published: 2023-04-15
  track: FREESTYLE(Funk Flex)
    type: MusicRecording
    duration: PT2M7S
    duration ms: 127503
    explicit: true
    by artist: MARCOO BLACkk
    in album: FREESTYLE(Funk Flex)
      type: MusicAlbum
      date published: 2023-04-15
    isrc code: QZMWW2306252
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T20:21:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe6d1c12f6b912fd6c403fee26ed0d3f9572e5e2f3418bd69e96de58255a01d4f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956620
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956620
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMWW2306252
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T07:11:13Z
    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 0xe6d1c12f6b912fd6c403fee26ed0d3f9572e5e2f3418bd69e96de58255a01d4f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZMWW2306252.
      date published: 2026-07-04T07:11:13Z
    audio: FREESTYLE(Funk Flex)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.059
      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: 0.83
      additional property: Energy
        type: PropertyValue
        value: 0.453
      additional property: Speechiness
        type: PropertyValue
        value: 0.283
      additional property: Acousticness
        type: PropertyValue
        value: 0.773
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.107
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.741
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.896
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor