MC Barto
type: MusicGroup
popularity: 4
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9a07dc6a16efcb661a82a6e138e96146172921331e22bc085d6f6bfcc6255883
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/844a6c64-c619-4ce7-b31b-140d4b8fc844.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/844a6c64-c619-4ce7-b31b-140d4b8fc844.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/844a6c64-c619-4ce7-b31b-140d4b8fc844
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9a07dc6a16efcb661a82a6e138e96146172921331e22bc085d6f6bfcc6255883","name":"MC Barto","registered_at":"2026-06-17T11:43:12Z","symbol":"NIM1384790","token_address":"0xa9eda44244c0017117aba63181e775790a4b08fe","type":"artist","uuid":"844a6c64-c619-4ce7-b31b-140d4b8fc844"}
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 0x9a07dc6a16efcb661a82a6e138e96146172921331e22bc085d6f6bfcc6255883. 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/844a6c64-c619-4ce7-b31b-140d4b8fc844.json and https://artists.proofprofile.net/proofs/artist/844a6c64-c619-4ce7-b31b-140d4b8fc844.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x9a07dc6a16efcb661a82a6e138e96146172921331e22bc085d6f6bfcc6255883","name":"MC Barto","registered_at":"2026-06-17T11:43:12Z","symbol":"NIM1384790","token_address":"0xa9eda44244c0017117aba63181e775790a4b08fe","type":"artist","uuid":"844a6c64-c619-4ce7-b31b-140d4b8fc844"}
album: La marcha de 3 (Compilado 2009-2015)
  type: MusicAlbum
  date published: 2015-07-01
album: La Marcha de Tres
  type: MusicAlbum
  date published: 2016-09-17
  track: Frecuencia Raper - Original Mix
    type: MusicRecording
    duration: PT2M22S
    duration ms: 142875
    explicit: true
    by artist: MC Barto
    in album: La Marcha de Tres
      type: MusicAlbum
      date published: 2016-09-17
    isrc code: GBKQU1682453
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T04:48:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9823232adebf6e0f25d04239043c9cf6146c58364fbba17bc27f0206b887d056
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958368
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958368
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU1682453
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T05:03:25Z
    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 0x9823232adebf6e0f25d04239043c9cf6146c58364fbba17bc27f0206b887d056. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GBKQU1682453.
      date published: 2026-07-17T05:03:25Z
    audio: Frecuencia Raper - Original Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.002
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.785
      additional property: Energy
        type: PropertyValue
        value: 0.79
      additional property: Speechiness
        type: PropertyValue
        value: 0.256
      additional property: Acousticness
        type: PropertyValue
        value: 0.14
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.279
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.961
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.234
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor