Matthew Alexander
type: MusicGroup
popularity: 3
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2d63f151cca8dc0c5953c8a87519c9289a54a76f113d73a4c468830d5372aac0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bbd40cc4-ae43-4193-8889-39f118e8abca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bbd40cc4-ae43-4193-8889-39f118e8abca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bbd40cc4-ae43-4193-8889-39f118e8abca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2d63f151cca8dc0c5953c8a87519c9289a54a76f113d73a4c468830d5372aac0","name":"Matthew Alexander","registered_at":"2026-06-20T17:36:56Z","symbol":"NIM1668125","token_address":"0xd78e4f465c3c76e5ed36e5b3eaf89b7dcffc7e23","type":"artist","uuid":"bbd40cc4-ae43-4193-8889-39f118e8abca"}
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 0x2d63f151cca8dc0c5953c8a87519c9289a54a76f113d73a4c468830d5372aac0. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbd40cc4-ae43-4193-8889-39f118e8abca.json and https://artists.proofprofile.net/proofs/artist/bbd40cc4-ae43-4193-8889-39f118e8abca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x2d63f151cca8dc0c5953c8a87519c9289a54a76f113d73a4c468830d5372aac0","name":"Matthew Alexander","registered_at":"2026-06-20T17:36:56Z","symbol":"NIM1668125","token_address":"0xd78e4f465c3c76e5ed36e5b3eaf89b7dcffc7e23","type":"artist","uuid":"bbd40cc4-ae43-4193-8889-39f118e8abca"}
album: In the Stu
  type: MusicAlbum
  date published: 2024-04-08
album: Motion
  type: MusicAlbum
  date published: 2024-05-08
album: Like I Never Left
  type: MusicAlbum
  date published: 2024-05-27
album: Like I Never Left
  type: MusicAlbum
  date published: 2024-05-27
album: 100 Missed Calls
  type: MusicAlbum
  date published: 2024-06-08
album: Rap Shit
  type: MusicAlbum
  date published: 2024-07-04
album: Solid
  type: MusicAlbum
  date published: 2024-07-24
album: Forgot to Call
  type: MusicAlbum
  date published: 2024-08-18
album: Forgot to Call
  type: MusicAlbum
  date published: 2024-08-18
album: Paradigm
  type: MusicAlbum
  date published: 2025-03-22
album: Paradigm
  type: MusicAlbum
  date published: 2025-03-22
album: iBall
  type: MusicAlbum
  date published: 2025-05-19
album: Be The One
  type: MusicAlbum
  date published: 2025-06-23
album: Armed & Reckless
  type: MusicAlbum
  date published: 2025-07-07
  track: Armed & Reckless
    type: MusicRecording
    duration: PT3M4S
    duration ms: 184536
    explicit: true
    by artist: Matthew Alexander
    in album: Armed & Reckless
      type: MusicAlbum
      date published: 2025-07-07
    isrc code: QZTBF2502362
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T12:50:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x11c084afc7eb3e84198f6ee92d65c116b59d71b63a87507e476a0d3c558ed4ce
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958303
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958303
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2502362
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:39:24Z
    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 0x11c084afc7eb3e84198f6ee92d65c116b59d71b63a87507e476a0d3c558ed4ce. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZTBF2502362.
      date published: 2026-07-16T16:39:24Z
    audio: Armed & Reckless
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 175.854
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.451
      additional property: Energy
        type: PropertyValue
        value: 0.682
      additional property: Speechiness
        type: PropertyValue
        value: 0.542
      additional property: Acousticness
        type: PropertyValue
        value: 0.014
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.26
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.588
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.565
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Highs and Lows
  type: MusicAlbum
  date published: 2025-07-11
album: OHTANI
  type: MusicAlbum
  date published: 2025-08-10
album: Long Way
  type: MusicAlbum
  date published: 2025-08-25