Jan Leliveld
type: MusicGroup
popularity: 8
followers: 495
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xef8f5716390611a42bb146dea7726b01af3d12a0bcaf2c8808f0bcd3ee03776a
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/5c723a2a-a1b3-4acd-af59-ec7053500210.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c723a2a-a1b3-4acd-af59-ec7053500210.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5c723a2a-a1b3-4acd-af59-ec7053500210
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xef8f5716390611a42bb146dea7726b01af3d12a0bcaf2c8808f0bcd3ee03776a","name":"Jan Leliveld","registered_at":"2026-06-16T22:09:06Z","symbol":"NIM1190610","token_address":"0x70ec5a427f71773ef13a47d48da91b32cc1eebb7","type":"artist","uuid":"5c723a2a-a1b3-4acd-af59-ec7053500210"}
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 0xef8f5716390611a42bb146dea7726b01af3d12a0bcaf2c8808f0bcd3ee03776a. 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/5c723a2a-a1b3-4acd-af59-ec7053500210.json and https://artists.proofprofile.net/proofs/artist/5c723a2a-a1b3-4acd-af59-ec7053500210.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xef8f5716390611a42bb146dea7726b01af3d12a0bcaf2c8808f0bcd3ee03776a","name":"Jan Leliveld","registered_at":"2026-06-16T22:09:06Z","symbol":"NIM1190610","token_address":"0x70ec5a427f71773ef13a47d48da91b32cc1eebb7","type":"artist","uuid":"5c723a2a-a1b3-4acd-af59-ec7053500210"}
album: Dit is mijn leven
  type: MusicAlbum
  date published: 2009-09-01
album: Dit is mijn leven
  type: MusicAlbum
  date published: 2009-09-11
album: Een roos alleen voor jou
  type: MusicAlbum
  date published: 2010-01-12
album: Marianne
  type: MusicAlbum
  date published: 2010-07-09
album: Marianne
  type: MusicAlbum
  date published: 2010-07-26
album: Vriendschap / Vrolijk Kerstfeest
  type: MusicAlbum
  date published: 2010-11-10
album: Vriendschap / Vrolijk Kerstfeest
  type: MusicAlbum
  date published: 2010-11-10
album: Laat het feest beginnen
  type: MusicAlbum
  date published: 2011-03-01
album: Eén voor één
  type: MusicAlbum
  date published: 2011-05-20
  track: Marianne
    type: MusicRecording
    duration: PT2M51S
    duration ms: 171000
    explicit: false
    by artist: Jan Leliveld
    in album: Eén voor één
      type: MusicAlbum
      date published: 2011-05-20
    isrc code: NLHV21000003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T12:31:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7a926844396a1b6715d9321a68f1b5a3508dc4d5de94d70642d7895e37e56503
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956551
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHV21000003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0x7a926844396a1b6715d9321a68f1b5a3508dc4d5de94d70642d7895e37e56503. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLHV21000003.
      date published: 2026-07-03T21:18:05Z
    audio: Marianne
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.985
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.593
      additional property: Energy
        type: PropertyValue
        value: 0.858
      additional property: Speechiness
        type: PropertyValue
        value: 0.064
      additional property: Acousticness
        type: PropertyValue
        value: 0.275
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.347
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.843
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.46
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Eén voor één
  type: MusicAlbum
  date published: 2011-05-20
album: Ons eigen café
  type: MusicAlbum
  date published: 2012-01-06
album: Zij hoort bij mij
  type: MusicAlbum
  date published: 2012-04-07
album: Zonder jou
  type: MusicAlbum
  date published: 2012-06-19
album: Zonder jou
  type: MusicAlbum
  date published: 2012-06-19
album: Vrij
  type: MusicAlbum
  date published: 2012-10-26
album: Het gaat te snel
  type: MusicAlbum
  date published: 2013-01-09
album: Het gaat te snel
  type: MusicAlbum
  date published: 2013-01-09
album: Jouw stralende glimlach
  type: MusicAlbum
  date published: 2016-12-31
album: Aalsmeer
  type: MusicAlbum
  date published: 2020-04-08
album: FC Aalsmeer Clublied
  type: MusicAlbum
  date published: 2022-03-04
album: De Nacht is Lang
  type: MusicAlbum
  date published: 2022-03-10
album: Aalsmeer (Remix)
  type: MusicAlbum
  date published: 2022-09-03