Mc Bart
type: MusicGroup
popularity: 5
followers: 29
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x37d99b811387a927dc252a44fa210b854f906b5411e69ab44413d6ee3665d57d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e48d58f-93d7-468f-a407-d4f0b32bb6d1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e48d58f-93d7-468f-a407-d4f0b32bb6d1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1e48d58f-93d7-468f-a407-d4f0b32bb6d1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x37d99b811387a927dc252a44fa210b854f906b5411e69ab44413d6ee3665d57d","name":"Mc Bart","registered_at":"2026-06-15T23:59:57Z","symbol":"NIM0873355","token_address":"0x6b204e8b2971f3d730aae33890fa3e779075615a","type":"artist","uuid":"1e48d58f-93d7-468f-a407-d4f0b32bb6d1"}
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 0x37d99b811387a927dc252a44fa210b854f906b5411e69ab44413d6ee3665d57d. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e48d58f-93d7-468f-a407-d4f0b32bb6d1.json and https://artists.proofprofile.net/proofs/artist/1e48d58f-93d7-468f-a407-d4f0b32bb6d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x37d99b811387a927dc252a44fa210b854f906b5411e69ab44413d6ee3665d57d","name":"Mc Bart","registered_at":"2026-06-15T23:59:57Z","symbol":"NIM0873355","token_address":"0x6b204e8b2971f3d730aae33890fa3e779075615a","type":"artist","uuid":"1e48d58f-93d7-468f-a407-d4f0b32bb6d1"}
album: Subindo a Savassi
  type: MusicAlbum
  date published: 2024-07-12
  track: Subindo a Savassi
    type: MusicRecording
    duration: PT2M48S
    duration ms: 168066
    explicit: false
    by artist: Mc Bart
    in album: Subindo a Savassi
      type: MusicAlbum
      date published: 2024-07-12
    isrc code: QZNJY2410258
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T08:24:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfdd22ad52310a2ee82e3264fd6b591ad2547555601801f26bcd91c7025ce3ab9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956500
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956500
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2410258
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T13:55:21Z
    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 0xfdd22ad52310a2ee82e3264fd6b591ad2547555601801f26bcd91c7025ce3ab9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJY2410258.
      date published: 2026-07-03T13:55:21Z
    audio: Subindo a Savassi
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.849
      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: 0.69
      additional property: Energy
        type: PropertyValue
        value: 0.524
      additional property: Speechiness
        type: PropertyValue
        value: 0.169
      additional property: Acousticness
        type: PropertyValue
        value: 0.548
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.35
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.527
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.274
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor