Mattu
type: MusicGroup
genre: hyperpop
popularity: 19
followers: 1155
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x84fe6e83a16e11a62e55b75b361e51dbad8f807c3f4bcb0cd9067a5233b8d0db
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953707
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953707
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7cc36840-3e30-4e2c-b86c-d354d789e239.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7cc36840-3e30-4e2c-b86c-d354d789e239.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7cc36840-3e30-4e2c-b86c-d354d789e239
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T23:22:21Z
additional property: OTSCanonicalRecord
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 0x84fe6e83a16e11a62e55b75b361e51dbad8f807c3f4bcb0cd9067a5233b8d0db. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cc36840-3e30-4e2c-b86c-d354d789e239.json and https://artists.proofprofile.net/proofs/artist/7cc36840-3e30-4e2c-b86c-d354d789e239.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T23:31:11Z
album: Söulfull
  type: MusicAlbum
  date published: 2016-05-02
album: Lightwaves
  type: MusicAlbum
  date published: 2017-08-08
album: Beach House & Imagination
  type: MusicAlbum
  date published: 2018-09-25
album: Rock Star
  type: MusicAlbum
  date published: 2019-07-06
album: Hex
  type: MusicAlbum
  date published: 2019-10-18
album: Waterfall
  type: MusicAlbum
  date published: 2020-04-17
album: FWM
  type: MusicAlbum
  date published: 2020-11-06
  track: FWM
    type: MusicRecording
    duration: PT3M2S
    duration ms: 182142
    explicit: true
    by artist: Mattu
    in album: FWM
      type: MusicAlbum
      date published: 2020-11-06
    genre: hyperpop
    isrc code: QZMEP2053704
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T12:56:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x920485e8122be6501a64951a74fe5229ba76711b1d4077a163cdcdc1817b1d82
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958891
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958891
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2053704
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T15:58:34Z
    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 0x920485e8122be6501a64951a74fe5229ba76711b1d4077a163cdcdc1817b1d82. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:58:34Z), 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/QZMEP2053704.
      date published: 2026-07-20T15:58:34Z
    audio: FWM
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.196
      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: 0.5
      additional property: Energy
        type: PropertyValue
        value: 0.779
      additional property: Speechiness
        type: PropertyValue
        value: 0.262
      additional property: Acousticness
        type: PropertyValue
        value: 0.033
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.061
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.268
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.254
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Lights Off
  type: MusicAlbum
  date published: 2023-06-02