Chapter One Quartet
type: MusicGroup
popularity: 3
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x319be44a0df21d9dc28ec0d74b2c9a6ca1178bbe25d0d61745fcb62b2ec21b72
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9329e2de-2991-4a35-a7bc-f63972ba94c5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9329e2de-2991-4a35-a7bc-f63972ba94c5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9329e2de-2991-4a35-a7bc-f63972ba94c5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x319be44a0df21d9dc28ec0d74b2c9a6ca1178bbe25d0d61745fcb62b2ec21b72","name":"Chapter One Quartet","registered_at":"2026-06-17T17:21:53Z","symbol":"NIM1465543","token_address":"0xdec639a7aefba3ab5d4fa8f13655f94fbd986e17","type":"artist","uuid":"9329e2de-2991-4a35-a7bc-f63972ba94c5"}
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 0x319be44a0df21d9dc28ec0d74b2c9a6ca1178bbe25d0d61745fcb62b2ec21b72. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9329e2de-2991-4a35-a7bc-f63972ba94c5.json and https://artists.proofprofile.net/proofs/artist/9329e2de-2991-4a35-a7bc-f63972ba94c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x319be44a0df21d9dc28ec0d74b2c9a6ca1178bbe25d0d61745fcb62b2ec21b72","name":"Chapter One Quartet","registered_at":"2026-06-17T17:21:53Z","symbol":"NIM1465543","token_address":"0xdec639a7aefba3ab5d4fa8f13655f94fbd986e17","type":"artist","uuid":"9329e2de-2991-4a35-a7bc-f63972ba94c5"}
album: Midnight Again
  type: MusicAlbum
  date published: 2024-03-29
album: First Kiss
  type: MusicAlbum
  date published: 2024-04-26
  track: First Kiss
    type: MusicRecording
    duration: PT2M59S
    duration ms: 179912
    explicit: false
    by artist: Chapter One Quartet
    in album: First Kiss
      type: MusicAlbum
      date published: 2024-04-26
    isrc code: SE66H2301650
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T17:47:54+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x85b5d7cf02b6c3947f27870c64392bd6e0e97f5c8f45524785f96a2d6d5561fa
    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/SE66H2301650
    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 0x85b5d7cf02b6c3947f27870c64392bd6e0e97f5c8f45524785f96a2d6d5561fa. 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/SE66H2301650.
      date published: 2026-07-05T01:12:41Z
    audio: First Kiss
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.458
      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: 0.426
      additional property: Energy
        type: PropertyValue
        value: 0.126
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.953
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.948
      additional property: Liveness
        type: PropertyValue
        value: 0.086
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.34
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.647
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: More of You
  type: MusicAlbum
  date published: 2025-05-02
album: Sweethearts
  type: MusicAlbum
  date published: 2025-07-18