The Cortinas
type: MusicGroup
genre: proto-punk
genre: punk
popularity: 11
followers: 5150
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9ee487ad8ba5b1f36b31f36df7bae1fd9c66e04a6d5e92dcfb478a9854d4d7a7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953727
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953727
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/912120aa-6847-4f49-a134-b7380b11edf3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/912120aa-6847-4f49-a134-b7380b11edf3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/912120aa-6847-4f49-a134-b7380b11edf3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T02:33:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9ee487ad8ba5b1f36b31f36df7bae1fd9c66e04a6d5e92dcfb478a9854d4d7a7","name":"The Cortinas","registered_at":"2026-06-14T19:43:54Z","symbol":"NIM0556847","token_address":"0x1369f9f7a3b8ad5a26ce31a237c75d0a76549edc","type":"artist","uuid":"912120aa-6847-4f49-a134-b7380b11edf3"}
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 0x9ee487ad8ba5b1f36b31f36df7bae1fd9c66e04a6d5e92dcfb478a9854d4d7a7. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/912120aa-6847-4f49-a134-b7380b11edf3.json and https://artists.proofprofile.net/proofs/artist/912120aa-6847-4f49-a134-b7380b11edf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x9ee487ad8ba5b1f36b31f36df7bae1fd9c66e04a6d5e92dcfb478a9854d4d7a7","name":"The Cortinas","registered_at":"2026-06-14T19:43:54Z","symbol":"NIM0556847","token_address":"0x1369f9f7a3b8ad5a26ce31a237c75d0a76549edc","type":"artist","uuid":"912120aa-6847-4f49-a134-b7380b11edf3"}
album: GBH Demos 1977
  type: MusicAlbum
  date published: 1977
album: For Fucks Sake Plymouth
  type: MusicAlbum
  date published: 1977
album: Please Don't Hit Me
  type: MusicAlbum
  date published: 1978
album: Punk Rock Anthology
  type: MusicAlbum
  date published: 2010
album: Punk Rock Anthology
  type: MusicAlbum
  date published: 2013-11-25
  track: Defiant Pose
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159213
    explicit: false
    by artist: The Cortinas
    in album: Punk Rock Anthology
      type: MusicAlbum
      date published: 2013-11-25
    genre: proto-punk
    genre: punk
    isrc code: USV351396879
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T15:48:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb46d66afdb8be31adaf0fdc7d2ab2aaa041f628d9542961c118ae2ab29b75551
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958300
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958300
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV351396879
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:14:30Z
    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 0xb46d66afdb8be31adaf0fdc7d2ab2aaa041f628d9542961c118ae2ab29b75551. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USV351396879.
      date published: 2026-07-16T16:14:30Z
    audio: Defiant Pose
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.132
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.473
      additional property: Energy
        type: PropertyValue
        value: 0.948
      additional property: Speechiness
        type: PropertyValue
        value: 0.088
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.006
      additional property: Liveness
        type: PropertyValue
        value: 0.343
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.571
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.346
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Summer in the City
  type: MusicAlbum
  date published: 2017-11-10