Martin Sterken
type: MusicGroup
popularity: 7
followers: 219
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b46f11e5204218f01da494b0f09f8012d0746924a080f12511a0234b42fe091
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5167d66-13c0-442f-ab3f-57fc380dfbc1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5167d66-13c0-442f-ab3f-57fc380dfbc1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b5167d66-13c0-442f-ab3f-57fc380dfbc1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9b46f11e5204218f01da494b0f09f8012d0746924a080f12511a0234b42fe091","name":"Martin Sterken","registered_at":"2026-06-20T14:30:09Z","symbol":"NIM1631811","token_address":"0x19f0733dd59cb17d6d8a1f8e751e36bd16eeb77c","type":"artist","uuid":"b5167d66-13c0-442f-ab3f-57fc380dfbc1"}
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 0x9b46f11e5204218f01da494b0f09f8012d0746924a080f12511a0234b42fe091. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5167d66-13c0-442f-ab3f-57fc380dfbc1.json and https://artists.proofprofile.net/proofs/artist/b5167d66-13c0-442f-ab3f-57fc380dfbc1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x9b46f11e5204218f01da494b0f09f8012d0746924a080f12511a0234b42fe091","name":"Martin Sterken","registered_at":"2026-06-20T14:30:09Z","symbol":"NIM1631811","token_address":"0x19f0733dd59cb17d6d8a1f8e751e36bd16eeb77c","type":"artist","uuid":"b5167d66-13c0-442f-ab3f-57fc380dfbc1"}
album: Het Grensjagerlied
  type: MusicAlbum
  date published: 1999-12-10
album: De beste markt van Nederland
  type: MusicAlbum
  date published: 2013-11-25
album: Nu weet ik wat liefde is
  type: MusicAlbum
  date published: 2015-06-01
album: Nu weet ik wat liefde is
  type: MusicAlbum
  date published: 2015-06-01
album: Als een magneet
  type: MusicAlbum
  date published: 2016-02-26
album: Als een magneet
  type: MusicAlbum
  date published: 2016-02-26
album: Een echte vriend
  type: MusicAlbum
  date published: 2017-11-09
album: Een echte vriend
  type: MusicAlbum
  date published: 2017-11-09
album: 1 moment in je leven
  type: MusicAlbum
  date published: 2019-06-18
album: 1 moment in je leven
  type: MusicAlbum
  date published: 2019-06-18
album: Tribute to the Action
  type: MusicAlbum
  date published: 2019-10-13
album: Gipsy Queen
  type: MusicAlbum
  date published: 2021-08-05
album: Het spijt me
  type: MusicAlbum
  date published: 2021-10-29
album: De beroemde 4 woorden
  type: MusicAlbum
  date published: 2022-01-27
album: Het Kainbongellied
  type: MusicAlbum
  date published: 2022-07-29
album: Radio Hennie & Bennie
  type: MusicAlbum
  date published: 2022-12-07
  track: Radio Hennie & Bennie
    type: MusicRecording
    duration: PT3M10S
    duration ms: 190730
    explicit: false
    by artist: Martin Sterken
    in album: Radio Hennie & Bennie
      type: MusicAlbum
      date published: 2022-12-07
    isrc code: NLZ422200106
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T15:05:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdb94ddc6c3abd14d1797d96cc299c893c2123f6348d9f3532744a27a787b403f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958300
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958300
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ422200106
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:14:30Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb94ddc6c3abd14d1797d96cc299c893c2123f6348d9f3532744a27a787b403f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ422200106.
      date published: 2026-07-16T16:14:30Z
    audio: Radio Hennie & Bennie
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 200
      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: 0.564
      additional property: Energy
        type: PropertyValue
        value: 0.715
      additional property: Speechiness
        type: PropertyValue
        value: 0.054
      additional property: Acousticness
        type: PropertyValue
        value: 0.146
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.407
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.905
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.952
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Macho BV en Combinatie L&P
  type: MusicAlbum
  date published: 2023
album: Terug naar jou
  type: MusicAlbum
  date published: 2025-05-16
  track: Terug naar jou
    type: MusicRecording
    duration: PT3M27S
    duration ms: 207826
    explicit: false
    by artist: Martin Sterken
    in album: Terug naar jou
      type: MusicAlbum
      date published: 2025-05-16
    isrc code: NLZ422500015
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T02:00:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x621108cc4a9b5bbef6c74a832491bd7ee801c89819162ea69804ddd01f7af0f1
    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
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Terug naar jou
album: Ons Mooie Valthermond

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ422500015

OTSTimestamp
type: PropertyValue
value: 2026-07-03T08:56:35Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621108cc4a9b5bbef6c74a832491bd7ee801c89819162ea69804ddd01f7af0f1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ422500015.
date published: 2026-07-03T08:56:35Z

Terug naar jou
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 123.127
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.626
additional property: Energy
  type: PropertyValue
  value: 0.886
additional property: Speechiness
  type: PropertyValue
  value: 0.066
additional property: Acousticness
  type: PropertyValue
  value: 0.052
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.141
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.658
additional property: Loudness (dB)
  type: PropertyValue
  value: -5.229
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

Ons Mooie Valthermond
type: MusicAlbum
date published: 2025-09-01