the leftover ska
type: MusicGroup
genre: ska
popularity: 6
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5250de6e7131990abb4ca74fcd3664d398deb43213f5f5d5de2f5f4c1b53e8f5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f08c167-1172-4ca9-a98e-b586ca6089c3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f08c167-1172-4ca9-a98e-b586ca6089c3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f08c167-1172-4ca9-a98e-b586ca6089c3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5250de6e7131990abb4ca74fcd3664d398deb43213f5f5d5de2f5f4c1b53e8f5","name":"the leftover ska","registered_at":"2026-06-20T04:59:48Z","symbol":"NIM1519747","token_address":"0xb85f105bf1738c44913ce7f839108beca800931b","type":"artist","uuid":"9f08c167-1172-4ca9-a98e-b586ca6089c3"}
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 0x5250de6e7131990abb4ca74fcd3664d398deb43213f5f5d5de2f5f4c1b53e8f5. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f08c167-1172-4ca9-a98e-b586ca6089c3.json and https://artists.proofprofile.net/proofs/artist/9f08c167-1172-4ca9-a98e-b586ca6089c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x5250de6e7131990abb4ca74fcd3664d398deb43213f5f5d5de2f5f4c1b53e8f5","name":"the leftover ska","registered_at":"2026-06-20T04:59:48Z","symbol":"NIM1519747","token_address":"0xb85f105bf1738c44913ce7f839108beca800931b","type":"artist","uuid":"9f08c167-1172-4ca9-a98e-b586ca6089c3"}
album: Fireball
  type: MusicAlbum
  date published: 2023-05-29
album: Anarchy
  type: MusicAlbum
  date published: 2023-12-11
album: Too Much Alcohol (remastered) 2024
  type: MusicAlbum
  date published: 2024-01-06
album: World of Sin
  type: MusicAlbum
  date published: 2024-02-20
album: Nobody else (Remastered) 2024
  type: MusicAlbum
  date published: 2024-06-14
album: MAKE IT STOP
  type: MusicAlbum
  date published: 2024-06-15
album: Chocolate
  type: MusicAlbum
  date published: 2024-07-08
  track: Chocolate
    type: MusicRecording
    duration: PT1M28S
    duration ms: 88405
    explicit: false
    by artist: the leftover ska
    in album: Chocolate
      type: MusicAlbum
      date published: 2024-07-08
    genre: ska
    isrc code: QZRP42495942
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T23:34:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf94e7d095d0481d4ffd25e3aadb309331d459d62b166a5085e26c93d240a40c1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956728
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP42495942
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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 0xf94e7d095d0481d4ffd25e3aadb309331d459d62b166a5085e26c93d240a40c1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZRP42495942.
      date published: 2026-07-05T01:43:49Z
    audio: Chocolate
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 111.618
      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: 0.43
      additional property: Energy
        type: PropertyValue
        value: 0.947
      additional property: Speechiness
        type: PropertyValue
        value: 0.107
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.541
      additional property: Liveness
        type: PropertyValue
        value: 0.308
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.368
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.46
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Mr.executioner
  type: MusicAlbum
  date published: 2024-07-16
album: Behind those eyes
  type: MusicAlbum
  date published: 2024-09-05
album: Make way
  type: MusicAlbum
  date published: 2024-09-05
album: Too high too low
  type: MusicAlbum
  date published: 2024-09-05
album: Plastic face
  type: MusicAlbum
  date published: 2025-02-19
album: Anarchy 2 (remastered)
  type: MusicAlbum
  date published: 2025-02-19
album: Move again
  type: MusicAlbum
  date published: 2025-02-19