Matt Castro
type: MusicGroup
popularity: 13
followers: 82
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb2e6ed444fab03e08b967b500f8e4f0ec55ee62c19e6d4398d65e74b77c41bf2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953727
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953727
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ff3922e-4a3b-4161-b33f-5335f428965e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ff3922e-4a3b-4161-b33f-5335f428965e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8ff3922e-4a3b-4161-b33f-5335f428965e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T02:33:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb2e6ed444fab03e08b967b500f8e4f0ec55ee62c19e6d4398d65e74b77c41bf2","name":"Matt Castro","registered_at":"2026-06-14T19:39:49Z","symbol":"NIM0555876","token_address":"0x6444acc8cf4405ac3c5c372a38e8d4507012dcfd","type":"artist","uuid":"8ff3922e-4a3b-4161-b33f-5335f428965e"}
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 0xb2e6ed444fab03e08b967b500f8e4f0ec55ee62c19e6d4398d65e74b77c41bf2. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ff3922e-4a3b-4161-b33f-5335f428965e.json and https://artists.proofprofile.net/proofs/artist/8ff3922e-4a3b-4161-b33f-5335f428965e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T02:33:01Z
  text: {"copyright_id":"0xb2e6ed444fab03e08b967b500f8e4f0ec55ee62c19e6d4398d65e74b77c41bf2","name":"Matt Castro","registered_at":"2026-06-14T19:39:49Z","symbol":"NIM0555876","token_address":"0x6444acc8cf4405ac3c5c372a38e8d4507012dcfd","type":"artist","uuid":"8ff3922e-4a3b-4161-b33f-5335f428965e"}
album: Told You Soo
  type: MusicAlbum
  date published: 2020-01-01
album: Gone
  type: MusicAlbum
  date published: 2024-02-09
album: Your Love
  type: MusicAlbum
  date published: 2024-03-29
album: By Any Means Necessary
  type: MusicAlbum
  date published: 2024-04-26
album: For The First Time
  type: MusicAlbum
  date published: 2024-05-17
album: Living For The Moment
  type: MusicAlbum
  date published: 2024-06-14
album: Summer Dayz
  type: MusicAlbum
  date published: 2024-07-19
album: All Alone
  type: MusicAlbum
  date published: 2024-08-09
album: So Bad Like
  type: MusicAlbum
  date published: 2024-08-30
album: Take Me Home
  type: MusicAlbum
  date published: 2024-11-29
album: All of Your Love
  type: MusicAlbum
  date published: 2024-12-20
album: Demons
  type: MusicAlbum
  date published: 2025-01-17
album: Time To Rise
  type: MusicAlbum
  date published: 2025-02-07
album: Take Flight
  type: MusicAlbum
  date published: 2025-03-07
album: Break The Alarm
  type: MusicAlbum
  date published: 2025-04-04
album: Let Me Down
  type: MusicAlbum
  date published: 2025-05-02
album: Never Say Never
  type: MusicAlbum
  date published: 2025-05-23
album: Eternity
  type: MusicAlbum
  date published: 2025-06-13
  track: Eternity
    type: MusicRecording
    duration: PT2M31S
    duration ms: 151884
    explicit: false
    by artist: Matt Castro
    in album: Eternity
      type: MusicAlbum
      date published: 2025-06-13
    isrc code: QZTAU2562580
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T01:30:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd0a21799886fc37aaca0261ef217f274959e8006d3975d9e3c9dde6e02b0cbf5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2562580
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xd0a21799886fc37aaca0261ef217f274959e8006d3975d9e3c9dde6e02b0cbf5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2562580 — a six-check JSON result.
      date published: 2026-07-06T01:25:57Z
    audio: Eternity
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 128.069
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.525
      additional property: Energy
        type: PropertyValue
        value: 0.982
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0.15
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.672
      additional property: Liveness
        type: PropertyValue
        value: 0.278
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.092
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.169
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sick Part
  type: MusicAlbum
  date published: 2025-07-04
album: We're Not OK
  type: MusicAlbum
  date published: 2025-09-26
album: Ghosts & Demons
  type: MusicAlbum
  date published: 2025-10-31