Mr. Leo
type: MusicGroup
description: Fonyuy Leonard Nsohburinka (born August 31, 1990) is a Cameroonian singer known by his stage name Mr. Leo. He rose to fame after his single "E go beta" a hit aired on most Radio/TV stations in and ou
popularity: 2
followers: 74
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x301ade7695498db7adc2c5f06025dc3b4d4a605c78bad4081b1330d93e10663a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/efd2b94d-6f79-4988-9854-05f9aa861d00.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/efd2b94d-6f79-4988-9854-05f9aa861d00.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/efd2b94d-6f79-4988-9854-05f9aa861d00
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x301ade7695498db7adc2c5f06025dc3b4d4a605c78bad4081b1330d93e10663a","name":"Mr. Leo","registered_at":"2026-06-21T12:43:51Z","symbol":"NIM1925673","token_address":"0xa1941bb41308e54ed665c1f6c6e28cb16a83554c","type":"artist","uuid":"efd2b94d-6f79-4988-9854-05f9aa861d00"}
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 0x301ade7695498db7adc2c5f06025dc3b4d4a605c78bad4081b1330d93e10663a. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efd2b94d-6f79-4988-9854-05f9aa861d00.json and https://artists.proofprofile.net/proofs/artist/efd2b94d-6f79-4988-9854-05f9aa861d00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x301ade7695498db7adc2c5f06025dc3b4d4a605c78bad4081b1330d93e10663a","name":"Mr. Leo","registered_at":"2026-06-21T12:43:51Z","symbol":"NIM1925673","token_address":"0xa1941bb41308e54ed665c1f6c6e28cb16a83554c","type":"artist","uuid":"efd2b94d-6f79-4988-9854-05f9aa861d00"}
album: El Dinosaurio Travieso
  type: MusicAlbum
  date published: 2024-01-19
  track: El Dinosaurio Travieso
    type: MusicRecording
    duration: PT2M6S
    duration ms: 126000
    explicit: false
    by artist: Mr. Leo
    in album: El Dinosaurio Travieso
      type: MusicAlbum
      date published: 2024-01-19
    isrc code: USCGH2465874
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T18:05:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1ab0d3396e0bb94cee3329bf0ab2c445e94b8dbed1d9bd07c4d86db95f16eb5a
    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/USCGH2465874
    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 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 0x1ab0d3396e0bb94cee3329bf0ab2c445e94b8dbed1d9bd07c4d86db95f16eb5a. 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/USCGH2465874.
      date published: 2026-07-05T19:27:56Z
    audio: El Dinosaurio Travieso
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.079
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.874
      additional property: Energy
        type: PropertyValue
        value: 0.143
      additional property: Speechiness
        type: PropertyValue
        value: 0.056
      additional property: Acousticness
        type: PropertyValue
        value: 0.894
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.799
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.173
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Vamos a Contar
  type: MusicAlbum
  date published: 2024-03-18
album: Las Ruedas de Mi Bicicleta
  type: MusicAlbum
  date published: 2024-10-01