Thunk A Cappella
type: MusicGroup
popularity: 3
followers: 1739
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbf91e20a1ad26a2dab67522f0124e90f9eb3a7c62032a960ebafae530aab87e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4e21e51-3712-4451-9c46-6ebf2bb96df6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4e21e51-3712-4451-9c46-6ebf2bb96df6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e4e21e51-3712-4451-9c46-6ebf2bb96df6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbf91e20a1ad26a2dab67522f0124e90f9eb3a7c62032a960ebafae530aab87e2","name":"Thunk A Cappella","registered_at":"2026-06-21T08:06:55Z","symbol":"NIM1870781","token_address":"0xf02b61bfc80dabf1298a4428447987dcaf4fad90","type":"artist","uuid":"e4e21e51-3712-4451-9c46-6ebf2bb96df6"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf91e20a1ad26a2dab67522f0124e90f9eb3a7c62032a960ebafae530aab87e2. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4e21e51-3712-4451-9c46-6ebf2bb96df6.json and https://artists.proofprofile.net/proofs/artist/e4e21e51-3712-4451-9c46-6ebf2bb96df6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xbf91e20a1ad26a2dab67522f0124e90f9eb3a7c62032a960ebafae530aab87e2","name":"Thunk A Cappella","registered_at":"2026-06-21T08:06:55Z","symbol":"NIM1870781","token_address":"0xf02b61bfc80dabf1298a4428447987dcaf4fad90","type":"artist","uuid":"e4e21e51-3712-4451-9c46-6ebf2bb96df6"}
album: Melodious
  type: MusicAlbum
  date published: 2018-06-20
album: Melodious
  type: MusicAlbum
  date published: 2018-06-20
  track: River
    type: MusicRecording
    duration: PT3M42S
    duration ms: 222000
    explicit: false
    by artist: Thunk A Cappella
    in album: Melodious
      type: MusicAlbum
      date published: 2018-06-20
    isrc code: QZ22B1957759
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T15:05:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5339abb9bed87f8aad966fb5e90b375f288f94add7208f675bfcd9d50d3dd66b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958746
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958746
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1957759
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T15:36:35Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5339abb9bed87f8aad966fb5e90b375f288f94add7208f675bfcd9d50d3dd66b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZ22B1957759.
      date published: 2026-07-19T15:36:35Z
    audio: River
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.451
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.464
      additional property: Energy
        type: PropertyValue
        value: 0.538
      additional property: Speechiness
        type: PropertyValue
        value: 0.549
      additional property: Acousticness
        type: PropertyValue
        value: 0.666
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.609
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.692
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.329
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major