Matt Mardini
type: MusicGroup
popularity: 4
followers: 202
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x177b9d3d02b01cd0f52a25c3ae6d3f00f4b47dc45d52b960ac4cd1c65ed1c79e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9bdc1941-c38d-4313-a089-dbf517a9ce57.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9bdc1941-c38d-4313-a089-dbf517a9ce57.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9bdc1941-c38d-4313-a089-dbf517a9ce57
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x177b9d3d02b01cd0f52a25c3ae6d3f00f4b47dc45d52b960ac4cd1c65ed1c79e","name":"Matt Mardini","registered_at":"2026-06-20T03:58:15Z","symbol":"NIM1504353","token_address":"0x61fb2a673e91bd0c6c0f522d6c0cae36f723e57b","type":"artist","uuid":"9bdc1941-c38d-4313-a089-dbf517a9ce57"}
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 0x177b9d3d02b01cd0f52a25c3ae6d3f00f4b47dc45d52b960ac4cd1c65ed1c79e. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bdc1941-c38d-4313-a089-dbf517a9ce57.json and https://artists.proofprofile.net/proofs/artist/9bdc1941-c38d-4313-a089-dbf517a9ce57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T05:07:36Z
  text: {"copyright_id":"0x177b9d3d02b01cd0f52a25c3ae6d3f00f4b47dc45d52b960ac4cd1c65ed1c79e","name":"Matt Mardini","registered_at":"2026-06-20T03:58:15Z","symbol":"NIM1504353","token_address":"0x61fb2a673e91bd0c6c0f522d6c0cae36f723e57b","type":"artist","uuid":"9bdc1941-c38d-4313-a089-dbf517a9ce57"}
album: Hiba
  type: MusicAlbum
  date published: 2020-05-01
album: Live at Rialto
  type: MusicAlbum
  date published: 2021-02-12
  track: Zingarella
    type: MusicRecording
    duration: PT4M40S
    duration ms: 280937
    explicit: false
    by artist: Matt Mardini
    in album: Live at Rialto
      type: MusicAlbum
      date published: 2021-02-12
    isrc code: CALOZ2100004
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T15:49:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3f398841d09b7f36b91879826041ca82dec71f5bdfe2b34906158e6207831b2e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958756
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958756
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALOZ2100004
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T18:52:43Z
    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 0x3f398841d09b7f36b91879826041ca82dec71f5bdfe2b34906158e6207831b2e. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:52:43Z), 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/CALOZ2100004.
      date published: 2026-07-19T18:52:43Z
    audio: Zingarella
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 178.838
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.362
      additional property: Energy
        type: PropertyValue
        value: 0.852
      additional property: Speechiness
        type: PropertyValue
        value: 0.054
      additional property: Acousticness
        type: PropertyValue
        value: 0.145
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.936
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.962
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.54
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Unplugged
  type: MusicAlbum
  date published: 2022-01-14
album: Melody
  type: MusicAlbum
  date published: 2024-08-09
album: Live at Rialto II
  type: MusicAlbum
  date published: 2025-05-17