City Kings
type: MusicGroup
genre: speed metal
popularity: 4
followers: 580
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8dc7cae5900810b3db9f54c062a341a66465bdd462b68f92b3b598797f4029bf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9507195-aa3a-4599-96d8-67f2518cc10a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9507195-aa3a-4599-96d8-67f2518cc10a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c9507195-aa3a-4599-96d8-67f2518cc10a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8dc7cae5900810b3db9f54c062a341a66465bdd462b68f92b3b598797f4029bf","name":"City Kings","registered_at":"2026-06-20T22:38:22Z","symbol":"NIM1736193","token_address":"0x1a3c6aa345f7daa2b2c4e3efb3035b3488cb5fb8","type":"artist","uuid":"c9507195-aa3a-4599-96d8-67f2518cc10a"}
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 0x8dc7cae5900810b3db9f54c062a341a66465bdd462b68f92b3b598797f4029bf. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9507195-aa3a-4599-96d8-67f2518cc10a.json and https://artists.proofprofile.net/proofs/artist/c9507195-aa3a-4599-96d8-67f2518cc10a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x8dc7cae5900810b3db9f54c062a341a66465bdd462b68f92b3b598797f4029bf","name":"City Kings","registered_at":"2026-06-20T22:38:22Z","symbol":"NIM1736193","token_address":"0x1a3c6aa345f7daa2b2c4e3efb3035b3488cb5fb8","type":"artist","uuid":"c9507195-aa3a-4599-96d8-67f2518cc10a"}
album: Cherry
  type: MusicAlbum
  date published: 2023-02-13
album: Steel Rock n Roll
  type: MusicAlbum
  date published: 2023-03-30
  track: Cherry
    type: MusicRecording
    duration: PT2M35S
    duration ms: 155000
    explicit: true
    by artist: City Kings
    in album: Steel Rock n Roll
      type: MusicAlbum
      date published: 2023-03-30
    genre: speed metal
    isrc code: TCAGY2395009
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T18:55:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xea7d9197515cf109f4f395cefe93a4523d50db3c2362ff0e38824b6308b1d493
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959047
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959047
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGY2395009
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T19:17:28Z
    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 0xea7d9197515cf109f4f395cefe93a4523d50db3c2362ff0e38824b6308b1d493. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCAGY2395009.
      date published: 2026-07-21T19:17:28Z
    audio: Cherry
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.411
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.299
      additional property: Energy
        type: PropertyValue
        value: 0.923
      additional property: Speechiness
        type: PropertyValue
        value: 0.079
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.36
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.052
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major