84 city
type: MusicGroup
popularity: 2
followers: 254
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb0cd3d0e51ad7c9eef45fcd9d92da6e2b0cd1b139b89ba699b52da2d2ec0b0f1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954573
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954573
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4d7d7b7-3db2-4dd3-8289-35785bd5b6f3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4d7d7b7-3db2-4dd3-8289-35785bd5b6f3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b4d7d7b7-3db2-4dd3-8289-35785bd5b6f3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T15:45:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb0cd3d0e51ad7c9eef45fcd9d92da6e2b0cd1b139b89ba699b52da2d2ec0b0f1","name":"84 city","registered_at":"2026-06-20T14:22:01Z","symbol":"NIM1630546","token_address":"0x092e4ab2a1e782807554f14ab25f5bb0eea35f69","type":"artist","uuid":"b4d7d7b7-3db2-4dd3-8289-35785bd5b6f3"}
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 0xb0cd3d0e51ad7c9eef45fcd9d92da6e2b0cd1b139b89ba699b52da2d2ec0b0f1. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4d7d7b7-3db2-4dd3-8289-35785bd5b6f3.json and https://artists.proofprofile.net/proofs/artist/b4d7d7b7-3db2-4dd3-8289-35785bd5b6f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T15:45:29Z
  text: {"copyright_id":"0xb0cd3d0e51ad7c9eef45fcd9d92da6e2b0cd1b139b89ba699b52da2d2ec0b0f1","name":"84 city","registered_at":"2026-06-20T14:22:01Z","symbol":"NIM1630546","token_address":"0x092e4ab2a1e782807554f14ab25f5bb0eea35f69","type":"artist","uuid":"b4d7d7b7-3db2-4dd3-8289-35785bd5b6f3"}
album: 171 exclu saif
  type: MusicAlbum
  date published: 2025-01-04
album: 165 exclu saif
  type: MusicAlbum
  date published: 2025-01-06
  track: 165 exclu saif
    type: MusicRecording
    duration: PT2M8S
    duration ms: 128000
    explicit: true
    by artist: 84 city
    in album: 165 exclu saif
      type: MusicAlbum
      date published: 2025-01-06
    isrc code: QZFYZ2564603
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T14:50:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5af85acf7e832acf9f9c8e82be873f315dff1ea45b9ac9a68089dfc0f4c3f2fc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2564603
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x5af85acf7e832acf9f9c8e82be873f315dff1ea45b9ac9a68089dfc0f4c3f2fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYZ2564603.
      date published: 2026-07-05T19:27:56Z
    audio: 165 exclu saif
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 117.8
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.568
      additional property: Energy
        type: PropertyValue
        value: 0.459
      additional property: Speechiness
        type: PropertyValue
        value: 0.175
      additional property: Acousticness
        type: PropertyValue
        value: 0.668
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.259
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.287
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 157 exclu saif
  type: MusicAlbum
  date published: 2025-01-10