Demarco
type: MusicGroup
genre: dancehall
genre: riddim
description: DeMarco or Dimarcco is a name, originally meaning son of Marco. As a surname Ab DeMarco, Canadian ice hockey player Ab DeMarco Jr., American ice hockey player and Ab DeMarco's son Antonio DeMarco, M
popularity: 19
followers: 1620
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x99b33fdb8a484af579713df746fa6c6b098bc416053066a0c826097361669cbb
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b501e2c1-662f-49e5-8355-75b49dc13a7f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:50:11Z
additional property: OTSCanonicalRecord
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 0x99b33fdb8a484af579713df746fa6c6b098bc416053066a0c826097361669cbb. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b501e2c1-662f-49e5-8355-75b49dc13a7f.json and https://artists.proofprofile.net/proofs/artist/b501e2c1-662f-49e5-8355-75b49dc13a7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
album: Lazy Body
  type: MusicAlbum
  date published: 2013-08-08
album: Fren Circle
  type: MusicAlbum
  date published: 2013-10-02
album: Menage Ã Trois
  type: MusicAlbum
  date published: 2014-03-07
album: Text Back
  type: MusicAlbum
  date published: 2014-09-11
  track: Text Back
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192052
    explicit: true
    by artist: Demarco
    in album: Text Back
      type: MusicAlbum
      date published: 2014-09-11
    genre: dancehall
    genre: riddim
    isrc code: USA2P1450620
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      value: 2026-07-03T18:31:42+00:00
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      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7a3f2cd171b58be3a0e4ea9a3c2cdd4e36d58561fc2cd2ab724f511df9af6cf1
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956576
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P1450620
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T02:06:47Z
    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 0x7a3f2cd171b58be3a0e4ea9a3c2cdd4e36d58561fc2cd2ab724f511df9af6cf1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA2P1450620.
      date published: 2026-07-04T02:06:47Z
    audio: Text Back
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 69.704
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.481
      additional property: Energy
        type: PropertyValue
        value: 0.913
      additional property: Speechiness
        type: PropertyValue
        value: 0.257
      additional property: Acousticness
        type: PropertyValue
        value: 0.27
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.103
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.756
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.552
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Instructions
  type: MusicAlbum
  date published: 2015-04-24
album: Yuh Nuh Dead (Blahdaff Nation Riddim)
  type: MusicAlbum
  date published: 2015-05-19
  track: Yuh Nuh Dead (Blahdaff Nation Riddim)
    type: MusicRecording
    duration: PT2M46S
    duration ms: 166296
    explicit: false
    by artist: Demarco
    in album: Yuh Nuh Dead (Blahdaff Nation Riddim)
      type: MusicAlbum
      date published: 2015-05-19
    genre: dancehall
    genre: riddim
    isrc code: USQY51564282
    additional property: CopyrightID
    additional property: CopyrightStatus
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      value: registered
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      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc0c09fc44b6c26760794998ba7faaa6d4e07f9280459c0dd12677f2ff2a29127
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958462
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51564282
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T23:17:53Z
    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 0xc0c09fc44b6c26760794998ba7faaa6d4e07f9280459c0dd12677f2ff2a29127. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USQY51564282.
      date published: 2026-07-17T23:17:53Z
    audio: Yuh Nuh Dead (Blahdaff Nation Riddim)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.996
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.811
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Energy
type: PropertyValue
value: 0.933

Speechiness
type: PropertyValue
value: 0.039

Acousticness
type: PropertyValue
value: 0.075

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.305

Valence (Positivity)
type: PropertyValue
value: 0.739

Loudness (dB)
type: PropertyValue
value: -1.906

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major