Hausmann Quartet
type: MusicGroup
popularity: 4
followers: 26
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x73f79967ea59ce4d4ec500578748c3853e92452fa78cf7b033b87ee380ace49c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50b3f11d-2eb6-4652-b1a3-dd4325b773aa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50b3f11d-2eb6-4652-b1a3-dd4325b773aa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/50b3f11d-2eb6-4652-b1a3-dd4325b773aa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x73f79967ea59ce4d4ec500578748c3853e92452fa78cf7b033b87ee380ace49c","name":"Hausmann Quartet","registered_at":"2026-06-16T17:48:06Z","symbol":"NIM1128332","token_address":"0x6557a600ca25834f50898b1a598a8dee4ea0a04f","type":"artist","uuid":"50b3f11d-2eb6-4652-b1a3-dd4325b773aa"}
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 0x73f79967ea59ce4d4ec500578748c3853e92452fa78cf7b033b87ee380ace49c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50b3f11d-2eb6-4652-b1a3-dd4325b773aa.json and https://artists.proofprofile.net/proofs/artist/50b3f11d-2eb6-4652-b1a3-dd4325b773aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x73f79967ea59ce4d4ec500578748c3853e92452fa78cf7b033b87ee380ace49c","name":"Hausmann Quartet","registered_at":"2026-06-16T17:48:06Z","symbol":"NIM1128332","token_address":"0x6557a600ca25834f50898b1a598a8dee4ea0a04f","type":"artist","uuid":"50b3f11d-2eb6-4652-b1a3-dd4325b773aa"}
album: American Kaleidoscope
  type: MusicAlbum
  date published: 2024-08-23
album: Peace on the Left - Justice on the Right
  type: MusicAlbum
  date published: 2024-09-02
album: Pale Blue Dot
  type: MusicAlbum
  date published: 2024-09-13
album: Pale Blue Dot
  type: MusicAlbum
  date published: 2024-10-11
  track: Peace on the Left – Justice on the Right
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192952
    explicit: false
    by artist: Hausmann Quartet
    in album: Pale Blue Dot
      type: MusicAlbum
      date published: 2024-10-11
    isrc code: QT28S2404101
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T09:53:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7c490cf2b97e7de6dd3b8be295294f1042a98fe7ff95ccd4094846365a0afe57
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958716
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958716
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT28S2404101
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T10:15:55Z
    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 0x7c490cf2b97e7de6dd3b8be295294f1042a98fe7ff95ccd4094846365a0afe57. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QT28S2404101.
      date published: 2026-07-19T10:15:55Z
    audio: Peace on the Left – Justice on the Right
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 88.161
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.37
      additional property: Energy
        type: PropertyValue
        value: 0.072
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.898
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.015
      additional property: Liveness
        type: PropertyValue
        value: 0.391
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.439
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.971
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor