Cfour
type: MusicGroup
popularity: 4
followers: 80
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7d2ac2fc90727f424c45383dececd7c463fbfcc5aca321ade75dc93b4ae731fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/25f93bb8-306e-4608-8e96-e11a21e17b73.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/25f93bb8-306e-4608-8e96-e11a21e17b73.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/25f93bb8-306e-4608-8e96-e11a21e17b73
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
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 0x7d2ac2fc90727f424c45383dececd7c463fbfcc5aca321ade75dc93b4ae731fc. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25f93bb8-306e-4608-8e96-e11a21e17b73.json and https://artists.proofprofile.net/proofs/artist/25f93bb8-306e-4608-8e96-e11a21e17b73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
album: My Life
  type: MusicAlbum
  date published: 2021-08-21
album: Recipe
  type: MusicAlbum
  date published: 2021-10-20
album: Live Life
  type: MusicAlbum
  date published: 2022-01-20
album: Heavyweight
  type: MusicAlbum
  date published: 2022-06-24
album: Back It Up
  type: MusicAlbum
  date published: 2022-10-20
album: House Party
  type: MusicAlbum
  date published: 2023-01-13
album: Big Meesh
  type: MusicAlbum
  date published: 2023-03-21
album: Fada God
  type: MusicAlbum
  date published: 2023-05-12
album: Facts
  type: MusicAlbum
  date published: 2023-08-07
album: Richer N Richer
  type: MusicAlbum
  date published: 2023-09-15
album: Firm
  type: MusicAlbum
  date published: 2024-01-05
album: Firm
  type: MusicAlbum
  date published: 2024-01-26
album: Back in the Game
  type: MusicAlbum
  date published: 2024-04-20
album: Clean Sweep
  type: MusicAlbum
  date published: 2024-06-10
album: Rich & Bad
  type: MusicAlbum
  date published: 2025-02-07
album: Bank Note
  type: MusicAlbum
  date published: 2025-04-18
album: Choppa LifeStyle
  type: MusicAlbum
  date published: 2025-07-25
  track: Choppa LifeStyle
    type: MusicRecording
    duration: PT2M55S
    duration ms: 175046
    explicit: true
    by artist: Cfour
    in album: Choppa LifeStyle
      type: MusicAlbum
      date published: 2025-07-25
    isrc code: QZPYN2513219
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T18:16:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x408df3171bb5f4f9f4d9fe5d5626f919714c0cd359425d6a76908d0a976f5049
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958601
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958601
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPYN2513219
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:27:02Z
    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 0x408df3171bb5f4f9f4d9fe5d5626f919714c0cd359425d6a76908d0a976f5049. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZPYN2513219.
      date published: 2026-07-18T19:27:02Z
    audio: Choppa LifeStyle
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.968
      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: 0.952
      additional property: Energy
        type: PropertyValue
        value: 0.57
      additional property: Speechiness
        type: PropertyValue
        value: 0.213
      additional property: Acousticness
        type: PropertyValue
        value: 0.004
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.484
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.704
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Glock 22
  type: MusicAlbum
  date published: 2025-08-29