Matheus Johnson
type: MusicGroup
popularity: 2
followers: 78
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5bbf0d0d38af7f1fdd50e8e3a97e09fc0b576287676d58c6fb90aad1765fe7e7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d30efaa6-e4a0-457a-bef3-a6143bb2509c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d30efaa6-e4a0-457a-bef3-a6143bb2509c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d30efaa6-e4a0-457a-bef3-a6143bb2509c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5bbf0d0d38af7f1fdd50e8e3a97e09fc0b576287676d58c6fb90aad1765fe7e7","name":"Matheus Johnson","registered_at":"2026-06-21T01:38:31Z","symbol":"NIM1779423","token_address":"0x2168a9a6f857fa90d98c41b0b6a8e043b5eaf38e","type":"artist","uuid":"d30efaa6-e4a0-457a-bef3-a6143bb2509c"}
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 0x5bbf0d0d38af7f1fdd50e8e3a97e09fc0b576287676d58c6fb90aad1765fe7e7. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d30efaa6-e4a0-457a-bef3-a6143bb2509c.json and https://artists.proofprofile.net/proofs/artist/d30efaa6-e4a0-457a-bef3-a6143bb2509c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x5bbf0d0d38af7f1fdd50e8e3a97e09fc0b576287676d58c6fb90aad1765fe7e7","name":"Matheus Johnson","registered_at":"2026-06-21T01:38:31Z","symbol":"NIM1779423","token_address":"0x2168a9a6f857fa90d98c41b0b6a8e043b5eaf38e","type":"artist","uuid":"d30efaa6-e4a0-457a-bef3-a6143bb2509c"}
album: Clamam Todos
  type: MusicAlbum
  date published: 2023-01-27
  track: Clamam Todos
    type: MusicRecording
    duration: PT5M32S
    duration ms: 332000
    explicit: false
    by artist: Matheus Johnson
    in album: Clamam Todos
      type: MusicAlbum
      date published: 2023-01-27
    isrc code: US7VG2359302
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T23:09:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8d568a9c41595a74922758fa2c5622b3441b2e228ce95a5396cea85aa338d831
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959076
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959076
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2359302
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T23:41:40Z
    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 0x8d568a9c41595a74922758fa2c5622b3441b2e228ce95a5396cea85aa338d831. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/US7VG2359302.
      date published: 2026-07-21T23:41:40Z
    audio: Clamam Todos
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.087
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.48
      additional property: Energy
        type: PropertyValue
        value: 0.7
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.059
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.123
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.188
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.332
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Aos Cativos
  type: MusicAlbum
  date published: 2023-06-08
album: Nome Sobre Todo Nome (Cover)
  type: MusicAlbum
  date published: 2024-07-13