Mark Doldersum
type: MusicGroup
popularity: 6
followers: 392
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4867cc61439f5ad739442757c06aa651e9d9fb5bb28b1ddacf939ccaa495368
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f86a6e4d-cf26-4501-a101-3b113571809f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f86a6e4d-cf26-4501-a101-3b113571809f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f86a6e4d-cf26-4501-a101-3b113571809f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd4867cc61439f5ad739442757c06aa651e9d9fb5bb28b1ddacf939ccaa495368","name":"Mark Doldersum","registered_at":"2026-06-21T16:25:40Z","symbol":"NIM1974093","token_address":"0xc0b8775539049838278e2d636d361c1130f4606d","type":"artist","uuid":"f86a6e4d-cf26-4501-a101-3b113571809f"}
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 0xd4867cc61439f5ad739442757c06aa651e9d9fb5bb28b1ddacf939ccaa495368. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f86a6e4d-cf26-4501-a101-3b113571809f.json and https://artists.proofprofile.net/proofs/artist/f86a6e4d-cf26-4501-a101-3b113571809f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xd4867cc61439f5ad739442757c06aa651e9d9fb5bb28b1ddacf939ccaa495368","name":"Mark Doldersum","registered_at":"2026-06-21T16:25:40Z","symbol":"NIM1974093","token_address":"0xc0b8775539049838278e2d636d361c1130f4606d","type":"artist","uuid":"f86a6e4d-cf26-4501-a101-3b113571809f"}
album: Zeg het dan als je kan
  type: MusicAlbum
  date published: 2011-11-29
album: Jij Bent Mijn Zonnestraal
  type: MusicAlbum
  date published: 2014-01-26
album: Laat Ons Dansen Gaan
  type: MusicAlbum
  date published: 2019-08-09
album: Laat Ons Dansen Gaan
  type: MusicAlbum
  date published: 2019-08-09
album: Er Is Geen Haast Meer
  type: MusicAlbum
  date published: 2019-12-20
album: Er Is Geen Haast Meer
  type: MusicAlbum
  date published: 2019-12-20
album: Die Griekse Ogen
  type: MusicAlbum
  date published: 2022-06-15
  track: Die Griekse Ogen
    type: MusicRecording
    duration: PT3M1S
    duration ms: 181051
    explicit: false
    by artist: Mark Doldersum
    in album: Die Griekse Ogen
      type: MusicAlbum
      date published: 2022-06-15
    isrc code: NLHA72200012
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T06:24:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3851efb28ff519056d33fb0a7e636c9e7c534b9de0e79659956e2d32d70d94df
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958980
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958980
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHA72200012
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T07:04:12Z
    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 0x3851efb28ff519056d33fb0a7e636c9e7c534b9de0e79659956e2d32d70d94df. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/NLHA72200012.
      date published: 2026-07-21T07:04:12Z
    audio: Die Griekse Ogen
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.996
      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: 0.741
      additional property: Energy
        type: PropertyValue
        value: 0.912
      additional property: Speechiness
        type: PropertyValue
        value: 0.058
      additional property: Acousticness
        type: PropertyValue
        value: 0.294
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.08
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.973
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.971
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Mijn beste vrienden
  type: MusicAlbum
  date published: 2022-11-18
album: Ik Wil M'n Liefde geven
  type: MusicAlbum
  date published: 2023-06-28
  track: Ik Wil M'n Liefde geven
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206365
    explicit: false
    by artist: Mark Doldersum
    in album: Ik Wil M'n Liefde geven
      type: MusicAlbum
      date published: 2023-06-28
    isrc code: NLHA72200062
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T08:50:19+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbe8eb84ec7bc44bded72b14b0b8c63eda5e6bdb6b8ce4af38097bda6ef6d638f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958991
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958991
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHA72200062
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T10:04:40Z
    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 0xbe8eb84ec7bc44bded72b14b0b8c63eda5e6bdb6b8ce4af38097bda6ef6d638f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NLHA72200062.
      date published: 2026-07-21T10:04:40Z
    audio: Ik Wil M'n Liefde geven
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.02
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      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: Het Geluk Komt Niet Vanzelf
album: Twee Weken Uit De Sleur
album: De Derde Helft

Danceability
type: PropertyValue
value: 0.608

Energy
type: PropertyValue
value: 0.908

Speechiness
type: PropertyValue
value: 0.051

Acousticness
type: PropertyValue
value: 0.019

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.307

Valence (Positivity)
type: PropertyValue
value: 0.798

Loudness (dB)
type: PropertyValue
value: -4.51

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major

Het Geluk Komt Niet Vanzelf
type: MusicAlbum
date published: 2024-01-26

Twee Weken Uit De Sleur
type: MusicAlbum
date published: 2024-06-21

De Derde Helft
type: MusicAlbum
date published: 2025-10-03
track: De Derde Helft
  type: MusicRecording
  duration: PT3M16S
  duration ms: 196511
  explicit: false
  by artist: Mark Doldersum
  in album: De Derde Helft
    type: MusicAlbum
    date published: 2025-10-03
  isrc code: NLCN52500079
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T20:47:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x30d5ad43f1190c22c3a256572bd3e4aa401b6386d107b1f08e1e81a27f899ff2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958779
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958779
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLCN52500079
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T23:49:34Z
  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 0x30d5ad43f1190c22c3a256572bd3e4aa401b6386d107b1f08e1e81a27f899ff2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:49:34Z), 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/NLCN52500079.
    date published: 2026-07-19T23:49:34Z
  audio: De Derde Helft
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 128.98
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.757
    additional property: Energy
      type: PropertyValue
      value: 0.922
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.23
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.362
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.98
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.72
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major