David Duffy Quartet
type: MusicGroup
popularity: 4
followers: 191
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x93f0dacdeca274858fb2e9c7d2209a7d74b7612c8e875c90daa857a5ca637f49
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88fa2295-d424-46d4-a3b9-e9674da07684.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88fa2295-d424-46d4-a3b9-e9674da07684.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/88fa2295-d424-46d4-a3b9-e9674da07684
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x93f0dacdeca274858fb2e9c7d2209a7d74b7612c8e875c90daa857a5ca637f49","name":"David Duffy Quartet","registered_at":"2026-06-17T13:23:16Z","symbol":"NIM1408573","token_address":"0x6afe5141c37915bd18bc84ac6a3dab59efa67ea8","type":"artist","uuid":"88fa2295-d424-46d4-a3b9-e9674da07684"}
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 0x93f0dacdeca274858fb2e9c7d2209a7d74b7612c8e875c90daa857a5ca637f49. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88fa2295-d424-46d4-a3b9-e9674da07684.json and https://artists.proofprofile.net/proofs/artist/88fa2295-d424-46d4-a3b9-e9674da07684.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x93f0dacdeca274858fb2e9c7d2209a7d74b7612c8e875c90daa857a5ca637f49","name":"David Duffy Quartet","registered_at":"2026-06-17T13:23:16Z","symbol":"NIM1408573","token_address":"0x6afe5141c37915bd18bc84ac6a3dab59efa67ea8","type":"artist","uuid":"88fa2295-d424-46d4-a3b9-e9674da07684"}
album: Connected Live
  type: MusicAlbum
  date published: 2023-08-10
album: Pulse
  type: MusicAlbum
  date published: 2023-09-01
album: Connected
  type: MusicAlbum
  date published: 2023-09-15
album: Spire
  type: MusicAlbum
  date published: 2023-09-22
album: Where The Branches Begin
  type: MusicAlbum
  date published: 2023-10-06
  track: Spire
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220273
    explicit: false
    by artist: David Duffy Quartet
    in album: Where The Branches Begin
      type: MusicAlbum
      date published: 2023-10-06
    isrc code: SE6XY2340182
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T19:35:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd092592ed5d265c4c6c13d8d662803b8d1b7ab74c6fb9c402cb0ceaa9582eed1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958489
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958489
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XY2340182
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T04:13:26Z
    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 0xd092592ed5d265c4c6c13d8d662803b8d1b7ab74c6fb9c402cb0ceaa9582eed1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6XY2340182.
      date published: 2026-07-18T04:13:26Z
    audio: Spire
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.11
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.634
      additional property: Energy
        type: PropertyValue
        value: 0.327
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.931
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.854
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.22
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.271
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major