Kirk Matthews
type: MusicGroup
popularity: 23
followers: 1525
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x475f276705dde387db3a38b283b04162ff271ffbdb2de611ed49f7e9a7b98556
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed75f570-9ef5-4855-9daa-70c3a6d5e3e3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed75f570-9ef5-4855-9daa-70c3a6d5e3e3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ed75f570-9ef5-4855-9daa-70c3a6d5e3e3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x475f276705dde387db3a38b283b04162ff271ffbdb2de611ed49f7e9a7b98556","name":"Kirk Matthews","registered_at":"2026-06-12T13:03:44Z","symbol":"NIM0306028","token_address":"0x512496175ea759d9c7a30e2d68588053a4e31d6e","type":"artist","uuid":"ed75f570-9ef5-4855-9daa-70c3a6d5e3e3"}
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 0x475f276705dde387db3a38b283b04162ff271ffbdb2de611ed49f7e9a7b98556. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed75f570-9ef5-4855-9daa-70c3a6d5e3e3.json and https://artists.proofprofile.net/proofs/artist/ed75f570-9ef5-4855-9daa-70c3a6d5e3e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x475f276705dde387db3a38b283b04162ff271ffbdb2de611ed49f7e9a7b98556","name":"Kirk Matthews","registered_at":"2026-06-12T13:03:44Z","symbol":"NIM0306028","token_address":"0x512496175ea759d9c7a30e2d68588053a4e31d6e","type":"artist","uuid":"ed75f570-9ef5-4855-9daa-70c3a6d5e3e3"}
album: Let Me Sign
  type: MusicAlbum
  date published: 2018-12-30
album: Turpentine (Live & Stripped)
  type: MusicAlbum
  date published: 2019-06-28
album: Killer
  type: MusicAlbum
  date published: 2019-09-20
album: Secrets
  type: MusicAlbum
  date published: 2019-10-18
album: Simple Life
  type: MusicAlbum
  date published: 2019-11-15
album: Whiskey & the Devil - EP
  type: MusicAlbum
  date published: 2019-12-20
album: Love & Hate
  type: MusicAlbum
  date published: 2020-02-14
album: Keep Rollin - Live Acoustic Studio Version
  type: MusicAlbum
  date published: 2020-03-27
album: B-Sides Songs from the Past
  type: MusicAlbum
  date published: 2020-05-01
album: The Color of Rust
  type: MusicAlbum
  date published: 2020-08-14
album: Huevo Dave
  type: MusicAlbum
  date published: 2020-11-06
album: The Color of Rust
  type: MusicAlbum
  date published: 2021-01-01
album: The Feeling
  type: MusicAlbum
  date published: 2021-04-12
album: What It's Like (Live from the Desert Compass)
  type: MusicAlbum
  date published: 2022-01-05
album: The Color of Rust
  type: MusicAlbum
  date published: 2022-06-25
album: Someone
  type: MusicAlbum
  date published: 2022-08-12
  track: Someone
    type: MusicRecording
    duration: PT2M40S
    duration ms: 160863
    explicit: true
    by artist: Kirk Matthews
    in album: Someone
      type: MusicAlbum
      date published: 2022-08-12
    isrc code: TCAGJ2263685
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T19:54:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf42f792fdcbe06d6eac1b93c4f7d4d23abb8d442c9ae1c9c393f4ca7b07cb755
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958060
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958060
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGJ2263685
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T20:39:42Z
    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 0xf42f792fdcbe06d6eac1b93c4f7d4d23abb8d442c9ae1c9c393f4ca7b07cb755. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGJ2263685.
      date published: 2026-07-14T20:39:42Z
    audio: Someone
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 80.32
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.568
      additional property: Energy
        type: PropertyValue
        value: 0.337
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.89
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.127
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.215
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.595
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major