Dr. Chk
type: MusicGroup
genre: drill
popularity: 14
followers: 1217
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1162fd29f2b481ceb491596944182e69c31f536edd7c16da3f7afca3bab64eac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8843bf11-9840-4a4a-9efd-ffc1106800f3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8843bf11-9840-4a4a-9efd-ffc1106800f3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8843bf11-9840-4a4a-9efd-ffc1106800f3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:05:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1162fd29f2b481ceb491596944182e69c31f536edd7c16da3f7afca3bab64eac","name":"Dr. Chk","registered_at":"2026-06-14T18:51:53Z","symbol":"NIM0544473","token_address":"0x99f77d414f293d7483f35ff33dd04746b5adad39","type":"artist","uuid":"8843bf11-9840-4a4a-9efd-ffc1106800f3"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1162fd29f2b481ceb491596944182e69c31f536edd7c16da3f7afca3bab64eac. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8843bf11-9840-4a4a-9efd-ffc1106800f3.json and https://artists.proofprofile.net/proofs/artist/8843bf11-9840-4a4a-9efd-ffc1106800f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:05:33Z
  text: {"copyright_id":"0x1162fd29f2b481ceb491596944182e69c31f536edd7c16da3f7afca3bab64eac","name":"Dr. Chk","registered_at":"2026-06-14T18:51:53Z","symbol":"NIM0544473","token_address":"0x99f77d414f293d7483f35ff33dd04746b5adad39","type":"artist","uuid":"8843bf11-9840-4a4a-9efd-ffc1106800f3"}
album: DR. CHK BEATS, Pt. 1
  type: MusicAlbum
  date published: 2021-11-16
album: BBC
  type: MusicAlbum
  date published: 2021-11-28
album: drug dealer
  type: MusicAlbum
  date published: 2022-01-18
album: Off the grid
  type: MusicAlbum
  date published: 2022-01-22
album: DAMN!
  type: MusicAlbum
  date published: 2022-08-01
album: NDJOO (Munch Wikimix)
  type: MusicAlbum
  date published: 2022-11-05
album: EBA
  type: MusicAlbum
  date published: 2023-01-15
album: MENSAJE
  type: MusicAlbum
  date published: 2023-05-03
album: NO ES CLARO
  type: MusicAlbum
  date published: 2023-06-29
  track: NO ES CLARO
    type: MusicRecording
    duration: PT2M8S
    duration ms: 128572
    explicit: true
    by artist: Dr. Chk
    in album: NO ES CLARO
      type: MusicAlbum
      date published: 2023-06-29
    genre: drill
    isrc code: QZMER2389364
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T07:58:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa89a15c4a69eae86535cf58df414b61af75433c0e6b0eb53716e741a89929336
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958700
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958700
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2389364
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T08:09:50Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89a15c4a69eae86535cf58df414b61af75433c0e6b0eb53716e741a89929336. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZMER2389364.
      date published: 2026-07-19T08:09:50Z
    audio: NO ES CLARO
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.832
      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: 0.54
      additional property: Energy
        type: PropertyValue
        value: 0.839
      additional property: Speechiness
        type: PropertyValue
        value: 0.181
      additional property: Acousticness
        type: PropertyValue
        value: 0.379
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.05
      additional property: Liveness
        type: PropertyValue
        value: 0.587
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.732
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.653
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: DPG'K
  type: MusicAlbum
  date published: 2024-02-02
album: Ndong Mbula
  type: MusicAlbum
  date published: 2024-02-02
  track: Ndong Mbula
    type: MusicRecording
    duration: PT2M29S
    duration ms: 149838
    explicit: true
    by artist: Dr. Chk
    in album: Ndong Mbula
      type: MusicAlbum
      date published: 2024-02-02
    genre: drill
    isrc code: QZDA62413292
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T06:05:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x22de8dcc279121054070dba1a79a6e7f502d825bcd14ba9183e690585804edb2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958251
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958251
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62413292
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T06:29:25Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22de8dcc279121054070dba1a79a6e7f502d825bcd14ba9183e690585804edb2. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZDA62413292.
      date published: 2026-07-16T06:29:25Z
    audio: Ndong Mbula
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.034
      additional property: Musical Key
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: BANG DEY NA CHEST
album: YA NO TE HAGO FALTA JERSEY CLUB

Musical Key
type: PropertyValue
value: 0

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.918

Energy
type: PropertyValue
value: 0.393

Speechiness
type: PropertyValue
value: 0.496

Acousticness
type: PropertyValue
value: 0.059

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.073

Valence (Positivity)
type: PropertyValue
value: 0.322

Loudness (dB)
type: PropertyValue
value: -17.949

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

BANG DEY NA CHEST
type: MusicAlbum
date published: 2024-03-26

YA NO TE HAGO FALTA JERSEY CLUB
type: MusicAlbum
date published: 2025-03-15