Julia van Helvoirt
type: MusicGroup
genre: nederpop
popularity: 12
followers: 1656
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1f6b72fc568dec49640dca5fbe6ab204ba920f41c2c33c6e7af03ad2d3e0a9df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953817
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953817
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fbf88969-6711-4a7b-ba88-4a12e055fb92.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fbf88969-6711-4a7b-ba88-4a12e055fb92.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fbf88969-6711-4a7b-ba88-4a12e055fb92
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:10:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1f6b72fc568dec49640dca5fbe6ab204ba920f41c2c33c6e7af03ad2d3e0a9df","name":"Julia van Helvoirt","registered_at":"2026-06-15T06:57:45Z","symbol":"NIM0717744","token_address":"0x344fa886d23681faf1a25b8e505c3ffac0b2ee5d","type":"artist","uuid":"fbf88969-6711-4a7b-ba88-4a12e055fb92"}
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 0x1f6b72fc568dec49640dca5fbe6ab204ba920f41c2c33c6e7af03ad2d3e0a9df. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbf88969-6711-4a7b-ba88-4a12e055fb92.json and https://artists.proofprofile.net/proofs/artist/fbf88969-6711-4a7b-ba88-4a12e055fb92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T18:10:31Z
  text: {"copyright_id":"0x1f6b72fc568dec49640dca5fbe6ab204ba920f41c2c33c6e7af03ad2d3e0a9df","name":"Julia van Helvoirt","registered_at":"2026-06-15T06:57:45Z","symbol":"NIM0717744","token_address":"0x344fa886d23681faf1a25b8e505c3ffac0b2ee5d","type":"artist","uuid":"fbf88969-6711-4a7b-ba88-4a12e055fb92"}
album: Ken Je Mij
  type: MusicAlbum
  date published: 2017-03-21
  track: Ken Je Mij
    type: MusicRecording
    duration: PT2M48S
    duration ms: 168500
    explicit: false
    by artist: Julia van Helvoirt
    in album: Ken Je Mij
      type: MusicAlbum
      date published: 2017-03-21
    genre: nederpop
    isrc code: NLK071700037
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T09:51:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x782c2e4b15b07f05b231a63697d18d0f10002bcba55cf3e1ba031e5c5483df0f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959123
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959123
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071700037
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T11:35:32Z
    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 0x782c2e4b15b07f05b231a63697d18d0f10002bcba55cf3e1ba031e5c5483df0f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLK071700037.
      date published: 2026-07-22T11:35:32Z
    audio: Ken Je Mij
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 64.043
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.603
      additional property: Energy
        type: PropertyValue
        value: 0.09
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.579
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.135
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.164
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.336
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Wat Zou Je Doen
  type: MusicAlbum
  date published: 2017-03-29
album: De Liefde Van Je Vrienden
  type: MusicAlbum
  date published: 2017-04-05
album: Ik Ben Niet Van Jou
  type: MusicAlbum
  date published: 2017-04-12
album: Ik Leef Mijn Eigen Leven
  type: MusicAlbum
  date published: 2017-04-13
album: Superhelden
  type: MusicAlbum
  date published: 2017-04-20
  track: Superhelden
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192837
    explicit: false
    by artist: Julia van Helvoirt
    in album: Superhelden
      type: MusicAlbum
      date published: 2017-04-20
    genre: nederpop
    isrc code: NLK071700067
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T01:07:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb77b3d96852b1e6e4a788dc7b9aeb5453706abda79606a987599eeab2cd1b383
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958805
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958805
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071700067
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T02:22:58Z
    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 0xb77b3d96852b1e6e4a788dc7b9aeb5453706abda79606a987599eeab2cd1b383. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/NLK071700067.
      date published: 2026-07-20T02:22:58Z
    audio: Superhelden
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.962
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.707
      additional property: Energy
        type: PropertyValue
        value: 0.15
      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: Jungle
album: Rot Jij Maar Op
album: Proost!
album: Jij Bent De Dans
album: Achteraf
album: Voel je 't niet
album: Als Een Koning
album: Drink Met Mij
album: Antwerpen

Speechiness
type: PropertyValue
value: 0.033

Acousticness
type: PropertyValue
value: 0.931

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.107

Valence (Positivity)
type: PropertyValue
value: 0.322

Loudness (dB)
type: PropertyValue
value: -9.09

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major

Jungle
type: MusicAlbum
date published: 2017-04-20

Rot Jij Maar Op
type: MusicAlbum
date published: 2018-08-06

Rot Jij Maar Op
type: MusicAlbum
date published: 2018-08-06

Proost!
type: MusicAlbum
date published: 2018-09-16

Proost!
type: MusicAlbum
date published: 2018-09-16

Jij Bent De Dans
type: MusicAlbum
date published: 2018-10-28

Jij Bent De Dans
type: MusicAlbum
date published: 2018-10-28

Achteraf
type: MusicAlbum
date published: 2018-12-09

Achteraf
type: MusicAlbum
date published: 2018-12-09

Voel je 't niet
type: MusicAlbum
date published: 2021-05-28
track: Voel je 't niet
  type: MusicRecording
  duration: PT3M9S
  duration ms: 189576
  explicit: false
  by artist: Julia van Helvoirt
  in album: Voel je 't niet
    type: MusicAlbum
    date published: 2021-05-28
  genre: nederpop
  isrc code: NLZ292100162
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T03:36:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8fb3a0ae3ef99540b405aeabecbe52773fb5bf360000ced9767bafd8ffb04979
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958653
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958653
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ292100162
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T03:54:23Z
  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 0x8fb3a0ae3ef99540b405aeabecbe52773fb5bf360000ced9767bafd8ffb04979. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/NLZ292100162.
    date published: 2026-07-19T03:54:23Z
  audio: Voel je 't niet
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 100.519
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.518
    additional property: Energy
      type: PropertyValue
      value: 0.809
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.103
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.34
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.489
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.5
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major

Voel je 't niet
type: MusicAlbum
date published: 2021-05-28

Als Een Koning
type: MusicAlbum
date published: 2021-11-05

Als Een Koning
type: MusicAlbum
date published: 2021-11-05

Drink Met Mij
type: MusicAlbum
date published: 2022-03-25

Drink Met Mij
type: MusicAlbum
date published: 2022-03-25

Antwerpen
type: MusicAlbum
date published: 2023-07-14

Antwerpen
type: MusicAlbum
date published: 2023-07-14