Matt Marantz Quartet
type: MusicGroup
genre: jazz
popularity: 36
followers: 510
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x14be51fcbd22924330b2977aa2e0532ea46e42aa1067d7d9ac2ce83cd06bd2e2
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/1d950c81-956c-457d-96ab-d369b6680405.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d950c81-956c-457d-96ab-d369b6680405.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1d950c81-956c-457d-96ab-d369b6680405
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x14be51fcbd22924330b2977aa2e0532ea46e42aa1067d7d9ac2ce83cd06bd2e2","name":"Matt Marantz Quartet","registered_at":"2026-06-11T13:44:32Z","symbol":"NIM0038624","token_address":"0x3954b101bca549a2ffda39ae7a5cbc049657f770","type":"artist","uuid":"1d950c81-956c-457d-96ab-d369b6680405"}
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 0x14be51fcbd22924330b2977aa2e0532ea46e42aa1067d7d9ac2ce83cd06bd2e2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d950c81-956c-457d-96ab-d369b6680405.json and https://artists.proofprofile.net/proofs/artist/1d950c81-956c-457d-96ab-d369b6680405.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x14be51fcbd22924330b2977aa2e0532ea46e42aa1067d7d9ac2ce83cd06bd2e2","name":"Matt Marantz Quartet","registered_at":"2026-06-11T13:44:32Z","symbol":"NIM0038624","token_address":"0x3954b101bca549a2ffda39ae7a5cbc049657f770","type":"artist","uuid":"1d950c81-956c-457d-96ab-d369b6680405"}
album: Blue Mist
  type: MusicAlbum
  date published: 2023-01-22
album: In the Distance
  type: MusicAlbum
  date published: 2023-03-26
album: Theme of the West
  type: MusicAlbum
  date published: 2023-05-07
album: Dreams Ahead
  type: MusicAlbum
  date published: 2023-06-11
album: Soultex
  type: MusicAlbum
  date published: 2023-07-23
album: Blue Christmas
  type: MusicAlbum
  date published: 2023-10-15
album: Silverstone
  type: MusicAlbum
  date published: 2023-11-19
album: Shooting Star
  type: MusicAlbum
  date published: 2023-12-10
album: Reaching Higher
  type: MusicAlbum
  date published: 2024-01-14
album: Nostalgia Looks Forward
  type: MusicAlbum
  date published: 2024-01-21
album: Las Coloradas
  type: MusicAlbum
  date published: 2024-02-11
album: Lone Pine
  type: MusicAlbum
  date published: 2024-03-10
album: Hang Up Your Spurs
  type: MusicAlbum
  date published: 2024-03-24
album: Glimmer
  type: MusicAlbum
  date published: 2024-03-31
album: Further Away
  type: MusicAlbum
  date published: 2024-05-05
  track: Further Away
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221469
    explicit: false
    by artist: Matt Marantz Quartet
    in album: Further Away
      type: MusicAlbum
      date published: 2024-05-05
    genre: jazz
    isrc code: QZAKB2384649
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T17:08:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8cea6565de37093b8c02ccb7b7b1525077987e6ae18f293f5b123d3120664757
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2384649
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x8cea6565de37093b8c02ccb7b7b1525077987e6ae18f293f5b123d3120664757. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZAKB2384649.
      date published: 2026-07-05T01:12:41Z
    audio: Further Away
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.792
      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: 0.525
      additional property: Energy
        type: PropertyValue
        value: 0.107
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.971
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.306
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.242
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.797
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Dreamstate
  type: MusicAlbum
  date published: 2024-05-26
album: Crystals
  type: MusicAlbum
  date published: 2024-06-16
album: Blue Storm
  type: MusicAlbum
  date published: 2024-07-14
album: Before Dawn
  type: MusicAlbum
  date published: 2024-07-28
album: Close to the Heart
  type: MusicAlbum
  date published: 2024-08-18
album: When Snow Starts Falling
  type: MusicAlbum
  date published: 2025-09-14