MC 2R
type: MusicGroup
genre: funk carioca
popularity: 5
followers: 46
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2f646823742fa9234daa7442de9e93858e2c11bdc5386a1b3ae47e8693d5fd64
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1793697d-af5e-440c-9990-afaba1d527c5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1793697d-af5e-440c-9990-afaba1d527c5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1793697d-af5e-440c-9990-afaba1d527c5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2f646823742fa9234daa7442de9e93858e2c11bdc5386a1b3ae47e8693d5fd64","name":"MC 2R","registered_at":"2026-06-15T21:40:56Z","symbol":"NIM0840184","token_address":"0xc53eddf22bd120cc6e7b3c6193cbc05846fe6f47","type":"artist","uuid":"1793697d-af5e-440c-9990-afaba1d527c5"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f646823742fa9234daa7442de9e93858e2c11bdc5386a1b3ae47e8693d5fd64. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1793697d-af5e-440c-9990-afaba1d527c5.json and https://artists.proofprofile.net/proofs/artist/1793697d-af5e-440c-9990-afaba1d527c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0x2f646823742fa9234daa7442de9e93858e2c11bdc5386a1b3ae47e8693d5fd64","name":"MC 2R","registered_at":"2026-06-15T21:40:56Z","symbol":"NIM0840184","token_address":"0xc53eddf22bd120cc6e7b3c6193cbc05846fe6f47","type":"artist","uuid":"1793697d-af5e-440c-9990-afaba1d527c5"}
album: Vai Ficar Chapada
  type: MusicAlbum
  date published: 2023-08-10
album: 12 Horas Macetando
  type: MusicAlbum
  date published: 2023-09-08
  track: 12 Horas Macetando
    type: MusicRecording
    duration: PT2M8S
    duration ms: 128016
    explicit: true
    by artist: MC 2R
    in album: 12 Horas Macetando
      type: MusicAlbum
      date published: 2023-09-08
    genre: funk carioca
    isrc code: QZNJZ2371304
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T07:53:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdde3361ecfc9c8a76020b88aed3df6ea6bcd783542968b2d8aa8489239e55e6c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958121
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958121
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2371304
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T08:02:12Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde3361ecfc9c8a76020b88aed3df6ea6bcd783542968b2d8aa8489239e55e6c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZNJZ2371304.
      date published: 2026-07-15T08:02:12Z
    audio: 12 Horas Macetando
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.029
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.927
      additional property: Energy
        type: PropertyValue
        value: 0.437
      additional property: Speechiness
        type: PropertyValue
        value: 0.114
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.051
      additional property: Liveness
        type: PropertyValue
        value: 0.064
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.899
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.904
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Vai Dormir Feliz Com Meu Famoso Chá de Xota
  type: MusicAlbum
  date published: 2023-12-15