Sjeng & Sjer & De Sjele
type: MusicGroup
genre: nederpop
popularity: 4
followers: 215
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb6026c24673977efb269cc8bd486750060dc201dc3e6e47b3bcfe1222f894349
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/69a2dac3-f237-4d77-bb75-e76244e993ad.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/69a2dac3-f237-4d77-bb75-e76244e993ad.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/69a2dac3-f237-4d77-bb75-e76244e993ad
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb6026c24673977efb269cc8bd486750060dc201dc3e6e47b3bcfe1222f894349","name":"Sjeng & Sjer & De Sjele","registered_at":"2026-06-17T02:26:53Z","symbol":"NIM1252103","token_address":"0xd2036e96b52edb9c7119ad09a1e2f2f036acfb55","type":"artist","uuid":"69a2dac3-f237-4d77-bb75-e76244e993ad"}
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 0xb6026c24673977efb269cc8bd486750060dc201dc3e6e47b3bcfe1222f894349. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69a2dac3-f237-4d77-bb75-e76244e993ad.json and https://artists.proofprofile.net/proofs/artist/69a2dac3-f237-4d77-bb75-e76244e993ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb6026c24673977efb269cc8bd486750060dc201dc3e6e47b3bcfe1222f894349","name":"Sjeng & Sjer & De Sjele","registered_at":"2026-06-17T02:26:53Z","symbol":"NIM1252103","token_address":"0xd2036e96b52edb9c7119ad09a1e2f2f036acfb55","type":"artist","uuid":"69a2dac3-f237-4d77-bb75-e76244e993ad"}
album: Durrepsfigure
  type: MusicAlbum
  date published: 2023-10-06
album: 't Merie
  type: MusicAlbum
  date published: 2023-11-10
album: Op 't Sjop
  type: MusicAlbum
  date published: 2024-08-01
album: Ayayayay
  type: MusicAlbum
  date published: 2025-02-11
album: Revolution
  type: MusicAlbum
  date published: 2025-09-12
  track: Revolution
    type: MusicRecording
    duration: PT4M3S
    duration ms: 243250
    explicit: false
    by artist: Sjeng & Sjer & De Sjele
    in album: Revolution
      type: MusicAlbum
      date published: 2025-09-12
    genre: nederpop
    isrc code: NLSB72500544
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T00:34:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6a0b4add7cba6c75a18d98ae825dcb75c32fa687afe5047e3ab8c0e3adefabd5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957782
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957782
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLSB72500544
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T00:52:48Z
    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 0x6a0b4add7cba6c75a18d98ae825dcb75c32fa687afe5047e3ab8c0e3adefabd5. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/NLSB72500544.
      date published: 2026-07-13T00:52:48Z
    audio: Revolution
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.247
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.604
      additional property: Energy
        type: PropertyValue
        value: 0.611
      additional property: Speechiness
        type: PropertyValue
        value: 0.18
      additional property: Acousticness
        type: PropertyValue
        value: 0.257
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.095
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.841
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.285
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major