MC ALEFF
type: MusicGroup
popularity: 4
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa29841d6e2f59857360b7f8ce13bae5da8c784c739ca37a734f417eb88af6d59
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2eed892-034f-47a0-9e9a-bf5d676fbe09.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2eed892-034f-47a0-9e9a-bf5d676fbe09.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f2eed892-034f-47a0-9e9a-bf5d676fbe09
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa29841d6e2f59857360b7f8ce13bae5da8c784c739ca37a734f417eb88af6d59","name":"MC ALEFF","registered_at":"2026-06-21T14:09:54Z","symbol":"NIM1939062","token_address":"0xefe85ca9023a1c77f03417c117e8c9dfc5bf9c0c","type":"artist","uuid":"f2eed892-034f-47a0-9e9a-bf5d676fbe09"}
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 0xa29841d6e2f59857360b7f8ce13bae5da8c784c739ca37a734f417eb88af6d59. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2eed892-034f-47a0-9e9a-bf5d676fbe09.json and https://artists.proofprofile.net/proofs/artist/f2eed892-034f-47a0-9e9a-bf5d676fbe09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0xa29841d6e2f59857360b7f8ce13bae5da8c784c739ca37a734f417eb88af6d59","name":"MC ALEFF","registered_at":"2026-06-21T14:09:54Z","symbol":"NIM1939062","token_address":"0xefe85ca9023a1c77f03417c117e8c9dfc5bf9c0c","type":"artist","uuid":"f2eed892-034f-47a0-9e9a-bf5d676fbe09"}
album: Nota 10 Pra Você
  type: MusicAlbum
  date published: 2022-06-15
  track: Nota 10 Pra Você
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206222
    explicit: true
    by artist: MC ALEFF
    in album: Nota 10 Pra Você
      type: MusicAlbum
      date published: 2022-06-15
    isrc code: US3DF2292347
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T16:25:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0d8b90a50282a785ef72eb42308a3766ebb0d288f9900a9b683777f358892d8d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2292347
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x0d8b90a50282a785ef72eb42308a3766ebb0d288f9900a9b683777f358892d8d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3DF2292347.
      date published: 2026-07-05T19:27:56Z
    audio: Nota 10 Pra Você
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.069
      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: 0.928
      additional property: Energy
        type: PropertyValue
        value: 0.819
      additional property: Speechiness
        type: PropertyValue
        value: 0.346
      additional property: Acousticness
        type: PropertyValue
        value: 0.055
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.104
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.651
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.67
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: OS CARRO MONSTRO DO CPX
  type: MusicAlbum
  date published: 2022-06-17