Jan Boezeroen
type: MusicGroup
genre: nederpop
popularity: 17
followers: 2844
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc97fe462dc7f25c7588dd9f5ddb1caf904852e34428c90330ac171095b2acdab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953645
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953645
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3dc541b0-7ac9-4677-8913-b1cd6ee84c71.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3dc541b0-7ac9-4677-8913-b1cd6ee84c71.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3dc541b0-7ac9-4677-8913-b1cd6ee84c71
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T14:31:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc97fe462dc7f25c7588dd9f5ddb1caf904852e34428c90330ac171095b2acdab","name":"Jan Boezeroen","registered_at":"2026-06-14T10:57:34Z","symbol":"NIM0431343","token_address":"0x2acd29b1a8c2b1753417a891282f4f7066fde688","type":"artist","uuid":"3dc541b0-7ac9-4677-8913-b1cd6ee84c71"}
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 0xc97fe462dc7f25c7588dd9f5ddb1caf904852e34428c90330ac171095b2acdab. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dc541b0-7ac9-4677-8913-b1cd6ee84c71.json and https://artists.proofprofile.net/proofs/artist/3dc541b0-7ac9-4677-8913-b1cd6ee84c71.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0xc97fe462dc7f25c7588dd9f5ddb1caf904852e34428c90330ac171095b2acdab","name":"Jan Boezeroen","registered_at":"2026-06-14T10:57:34Z","symbol":"NIM0431343","token_address":"0x2acd29b1a8c2b1753417a891282f4f7066fde688","type":"artist","uuid":"3dc541b0-7ac9-4677-8913-b1cd6ee84c71"}
album: De Fles (Remastered 2025)
  type: MusicAlbum
  date published: 1970-01-01
album: Oei, Oei (Expanded Edition)
  type: MusicAlbum
  date published: 1972-01-01
album: Jan Boezeroen
  type: MusicAlbum
  date published: 1974-11-16
album: Midden in de nacht
  type: MusicAlbum
  date published: 1976-03-18
album: Telstar Dubbel Goud, Vol. 59
  type: MusicAlbum
  date published: 1976-12-10
album: Iedereen Zegt Dat Ik Drink
  type: MusicAlbum
  date published: 1983
album: Alleen Is Maar Alleen (Expanded Edition)
  type: MusicAlbum
  date published: 1986-01-01
album: De Regenboog Serie: Jan Boezeroen
  type: MusicAlbum
  date published: 2008-01-01
album: Het Beste van Jan Boezeroen
  type: MusicAlbum
  date published: 2009-09-14
  track: Vondel Was Goed
    type: MusicRecording
    duration: PT2M55S
    duration ms: 175653
    explicit: false
    by artist: Jan Boezeroen
    in album: Het Beste van Jan Boezeroen
      type: MusicAlbum
      date published: 2009-09-14
    genre: nederpop
    isrc code: NLA340500247
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T18:07:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7270ed6a58c3e6688b9e94f144c80e31169c118f6ef9f32d9c014f42a7a78795
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956560
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956560
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA340500247
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T23:28:02Z
    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 0x7270ed6a58c3e6688b9e94f144c80e31169c118f6ef9f32d9c014f42a7a78795. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLA340500247.
      date published: 2026-07-03T23:28:02Z
    audio: Vondel Was Goed
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 174.054
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.579
      additional property: Energy
        type: PropertyValue
        value: 0.68
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.671
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.057
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.951
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.136
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: De Fles & Andere Hits
  type: MusicAlbum
  date published: 2010-11-15
album: De Fles & Andere Hits
  type: MusicAlbum
  date published: 2010-11-15
  track: Toen Ik Eindelijk Alles Had
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226000
    explicit: false
    by artist: Jan Boezeroen
    in album: De Fles & Andere Hits
      type: MusicAlbum
      date published: 2010-11-15
    genre: nederpop
    isrc code: NLL080501085
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T05:39:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xee09aa77d18dea1041f540e71a07555d8eb63e3cf3d1b0a8e000f765950553c7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958377
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958377
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLL080501085
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T08:50:08Z
    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 0xee09aa77d18dea1041f540e71a07555d8eb63e3cf3d1b0a8e000f765950553c7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:50:08Z), 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/NLL080501085.
      date published: 2026-07-17T08:50:08Z
    audio: Toen Ik Eindelijk Alles Had
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.611
      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: Carnavals Hits

Musical Key
type: PropertyValue
value: 5

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

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.361

Energy
type: PropertyValue
value: 0.452

Speechiness
type: PropertyValue
value: 0.028

Acousticness
type: PropertyValue
value: 0.435

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.304

Valence (Positivity)
type: PropertyValue
value: 0.658

Loudness (dB)
type: PropertyValue
value: -9.769

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Carnavals Hits
type: MusicAlbum
date published: 2018-11-01