Nk sem
type: MusicGroup
genre: african gospel
genre: rumba congolaise
popularity: 23
followers: 2241
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66454d57561e2380b45a28c1e36dba632fcfa247ed298d7757f56f68086a9f7c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2e3dcb1f-d46f-425e-8795-101c848d19fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2e3dcb1f-d46f-425e-8795-101c848d19fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2e3dcb1f-d46f-425e-8795-101c848d19fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66454d57561e2380b45a28c1e36dba632fcfa247ed298d7757f56f68086a9f7c","name":"Nk sem","registered_at":"2026-06-11T15:13:06Z","symbol":"NIM0059842","token_address":"0xf4ecb20ec13c3c705cc585b6082b31a417742886","type":"artist","uuid":"2e3dcb1f-d46f-425e-8795-101c848d19fd"}
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 0x66454d57561e2380b45a28c1e36dba632fcfa247ed298d7757f56f68086a9f7c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e3dcb1f-d46f-425e-8795-101c848d19fd.json and https://artists.proofprofile.net/proofs/artist/2e3dcb1f-d46f-425e-8795-101c848d19fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x66454d57561e2380b45a28c1e36dba632fcfa247ed298d7757f56f68086a9f7c","name":"Nk sem","registered_at":"2026-06-11T15:13:06Z","symbol":"NIM0059842","token_address":"0xf4ecb20ec13c3c705cc585b6082b31a417742886","type":"artist","uuid":"2e3dcb1f-d46f-425e-8795-101c848d19fd"}
album: DLD(dans le destin)
  type: MusicAlbum
  date published: 2021-08-14
album: Dieu Fidèle
  type: MusicAlbum
  date published: 2022-07-22
  track: Dieu Fidèle
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187506
    explicit: false
    by artist: Nk sem
    in album: Dieu Fidèle
      type: MusicAlbum
      date published: 2022-07-22
    genre: african gospel
    genre: rumba congolaise
    isrc code: QZK6L2287318
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T05:10:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd80b253d638e353a8ff4bd0c95e39f0ed28c24ad330993d15378b13e419569fe
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2287318
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0xd80b253d638e353a8ff4bd0c95e39f0ed28c24ad330993d15378b13e419569fe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6L2287318.
      date published: 2026-07-03T08:56:35Z
    audio: Dieu Fidèle
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.091
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.5
      additional property: Energy
        type: PropertyValue
        value: 0.499
      additional property: Speechiness
        type: PropertyValue
        value: 0.202
      additional property: Acousticness
        type: PropertyValue
        value: 0.045
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.062
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.27
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.2
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: WAH
  type: MusicAlbum
  date published: 2023-07-28
album: HISTOIRE
  type: MusicAlbum
  date published: 2024-05-10
album: DOSSIER
  type: MusicAlbum
  date published: 2025-02-21