Martin van Doorn
type: MusicGroup
popularity: 12
followers: 660
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc372ec0c4012fbdec7bb40524ce5fdde3db1297443568f330240bf5eeeece1ef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad2e3b70-0cca-40c3-9e8d-86b524c01eec.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad2e3b70-0cca-40c3-9e8d-86b524c01eec.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ad2e3b70-0cca-40c3-9e8d-86b524c01eec
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc372ec0c4012fbdec7bb40524ce5fdde3db1297443568f330240bf5eeeece1ef","name":"Martin van Doorn","registered_at":"2026-06-14T22:35:59Z","symbol":"NIM0597926","token_address":"0x557cd4ae2f0c55d708a13973c2d5450352f10feb","type":"artist","uuid":"ad2e3b70-0cca-40c3-9e8d-86b524c01eec"}
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 0xc372ec0c4012fbdec7bb40524ce5fdde3db1297443568f330240bf5eeeece1ef. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad2e3b70-0cca-40c3-9e8d-86b524c01eec.json and https://artists.proofprofile.net/proofs/artist/ad2e3b70-0cca-40c3-9e8d-86b524c01eec.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0xc372ec0c4012fbdec7bb40524ce5fdde3db1297443568f330240bf5eeeece1ef","name":"Martin van Doorn","registered_at":"2026-06-14T22:35:59Z","symbol":"NIM0597926","token_address":"0x557cd4ae2f0c55d708a13973c2d5450352f10feb","type":"artist","uuid":"ad2e3b70-0cca-40c3-9e8d-86b524c01eec"}
album: Mooi Is Het Leven
  type: MusicAlbum
  date published: 2006-08-24
album: Dat Is Mijn Utrecht
  type: MusicAlbum
  date published: 2007-12-12
  track: Dat Is Mijn Utrecht
    type: MusicRecording
    duration: PT3M16S
    duration ms: 196853
    explicit: false
    by artist: Martin van Doorn
    in album: Dat Is Mijn Utrecht
      type: MusicAlbum
      date published: 2007-12-12
    isrc code: NLC280700106
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T00:49:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x83ec6067fd60821b4e0857037fe695a53b7e3aab5f0195e33e4c011779b80553
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956422
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956422
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC280700106
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T01:01:38Z
    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 0x83ec6067fd60821b4e0857037fe695a53b7e3aab5f0195e33e4c011779b80553. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC280700106 — a six-check JSON result.
      date published: 2026-07-03T01:01:38Z
    audio: Dat Is Mijn Utrecht
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.654
      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: 0.722
      additional property: Energy
        type: PropertyValue
        value: 0.733
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.154
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.133
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.789
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.045
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Lege dagen, vele vragen
  type: MusicAlbum
  date published: 2008-10-24
album: Lege dagen, vele vragen
  type: MusicAlbum
  date published: 2008-10-24
  track: Lege dagen, vele vragen
    type: MusicRecording
    duration: PT3M57S
    duration ms: 237000
    explicit: false
    by artist: Martin van Doorn
    in album: Lege dagen, vele vragen
      type: MusicAlbum
      date published: 2008-10-24
    isrc code: NLEW90800048
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T06:17:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x373dd9c25007618714e90a2ea239ec0291629c920832630340b9cd4f2651b7ad
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959105
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959105
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLEW90800048
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T06:33:30Z
    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 0x373dd9c25007618714e90a2ea239ec0291629c920832630340b9cd4f2651b7ad. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLEW90800048 — a six-check JSON result.
      date published: 2026-07-22T06:33:30Z
    audio: Lege dagen, vele vragen
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.018
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.545
      additional property: Energy
        type: PropertyValue
        value: 0.567
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.018
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Lege dagen, vele vragen 2010
album: Een vriend voor het leven
album: Anders Dan Met Jou (Radio Edit)
album: Als De Morgen Nooit Meer Komt
album: Verder Zonder Jou

Liveness
type: PropertyValue
value: 0.261

Valence (Positivity)
type: PropertyValue
value: 0.481

Loudness (dB)
type: PropertyValue
value: -6.63

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Lege dagen, vele vragen 2010
type: MusicAlbum
date published: 2010-05-06

Lege dagen, vele vragen 2010
type: MusicAlbum
date published: 2010-05-06

Een vriend voor het leven
type: MusicAlbum
date published: 2010-12-05

Een vriend voor het leven
type: MusicAlbum
date published: 2010-12-09

Anders Dan Met Jou (Radio Edit)
type: MusicAlbum
date published: 2019-02-27

Anders Dan Met Jou (Radio Edit)
type: MusicAlbum
date published: 2019-02-27

Als De Morgen Nooit Meer Komt
type: MusicAlbum
date published: 2019-03-23
track: Als De Morgen Nooit Meer Komt
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190032
  explicit: false
  by artist: Martin van Doorn
  in album: Als De Morgen Nooit Meer Komt
    type: MusicAlbum
    date published: 2019-03-23
  isrc code: NLWF31900001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T08:13:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc4d551ef9ed20290073afe7589494fdee4530c7fef37a9d4be8ed2a5b0f9953d
  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/NLWF31900001
  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 0xc4d551ef9ed20290073afe7589494fdee4530c7fef37a9d4be8ed2a5b0f9953d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLWF31900001 — a six-check JSON result.
    date published: 2026-07-03T08:56:35Z
  audio: Als De Morgen Nooit Meer Komt
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 89.977
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.592
    additional property: Energy
      type: PropertyValue
      value: 0.3
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.849
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.07
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.462
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.573
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Als De Morgen Nooit Meer Komt
type: MusicAlbum
date published: 2019-03-23

Verder Zonder Jou
type: MusicAlbum
date published: 2019-04-19