De Martijn
type: MusicGroup
genre: tropical house
popularity: 13
followers: 719
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x53743ea078fd7693a4235b331795efa5bb3e0444e6db0378fa1bfef4ddfe76f4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953641
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953641
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3c948455-b72b-4ba7-8955-e5339db1502e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3c948455-b72b-4ba7-8955-e5339db1502e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3c948455-b72b-4ba7-8955-e5339db1502e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:54:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x53743ea078fd7693a4235b331795efa5bb3e0444e6db0378fa1bfef4ddfe76f4. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c948455-b72b-4ba7-8955-e5339db1502e.json and https://artists.proofprofile.net/proofs/artist/3c948455-b72b-4ba7-8955-e5339db1502e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T13:54:28Z
  text: {"copyright_id":"0x53743ea078fd7693a4235b331795efa5bb3e0444e6db0378fa1bfef4ddfe76f4","name":"De Martijn","registered_at":"2026-06-14T10:50:00Z","symbol":"NIM0429537","token_address":"0x7606ea59efdf36902b3a59930835ee2fd3377352","type":"artist","uuid":"3c948455-b72b-4ba7-8955-e5339db1502e"}
album: Through the Waves
  type: MusicAlbum
  date published: 2015-12-04
  track: Through the Waves - Sinewaves Club Deep Remix
    type: MusicRecording
    duration: PT5M5S
    duration ms: 305084
    explicit: false
    by artist: De Martijn
    in album: Through the Waves
      type: MusicAlbum
      date published: 2015-12-04
    genre: tropical house
    isrc code: GBULZ1303264
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T15:25:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xea29e9561cc1eaaf15228f6cd1025137594a8836afea1c1481619345f9356594
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958907
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958907
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBULZ1303264
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T18:27:36Z
    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 0xea29e9561cc1eaaf15228f6cd1025137594a8836afea1c1481619345f9356594. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:27:36Z), 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/GBULZ1303264.
      date published: 2026-07-20T18:27:36Z
    audio: Through the Waves - Sinewaves Club Deep Remix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 117.997
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.847
      additional property: Energy
        type: PropertyValue
        value: 0.718
      additional property: Speechiness
        type: PropertyValue
        value: 0.074
      additional property: Acousticness
        type: PropertyValue
        value: 0.081
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.187
      additional property: Liveness
        type: PropertyValue
        value: 0.086
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.225
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.467
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Through The Waves (Remixes)
  type: MusicAlbum
  date published: 2015-12-25
album: Through the Waves (Black Legend Remix)
  type: MusicAlbum
  date published: 2016-04-08
album: Through The Waves (Black Legend Remix)
  type: MusicAlbum
  date published: 2016-04-22
album: It's A Fine Day (feat. Audrey Tritto) [Black Legend Mix]
  type: MusicAlbum
  date published: 2016-09-23
album: It's A Fine Day (Get Far Remix)
  type: MusicAlbum
  date published: 2016-12-23
album: It's a Fine Day
  type: MusicAlbum
  date published: 2017-02-03
album: It's a Fine Day (feat. Audrey Tritto) [Remixes] - Single [Remixed by Get Far]
  type: MusicAlbum
  date published: 2017-02-10
album: Stay
  type: MusicAlbum
  date published: 2018-04-27
album: Stay (feat. Ania J)
  type: MusicAlbum
  date published: 2018-05-21
album: Stay (Andy Rave Remix)
  type: MusicAlbum
  date published: 2019-04-26
album: Say Yes
  type: MusicAlbum
  date published: 2019-05-24
album: Stay
  type: MusicAlbum
  date published: 2019-06-28
album: Say Yes
  type: MusicAlbum
  date published: 2019-10-11
album: See the Light
  type: MusicAlbum
  date published: 2020-03-13
album: Possible
  type: MusicAlbum
  date published: 2020-07-31
album: Feel My Self
  type: MusicAlbum
  date published: 2020-09-11
album: Feel My Self
  type: MusicAlbum
  date published: 2020-09-11
album: Feel My Self
  type: MusicAlbum
  date published: 2020-10-07
album: Feel My Self (Benny Camaro Remix)
  type: MusicAlbum
  date published: 2020-10-21
album: Feel My Self
  type: MusicAlbum
  date published: 2020-10-21
album: Feel My Self
  type: MusicAlbum
  date published: 2020-10-28
album: Possible
  type: MusicAlbum
  date published: 2021-10-15
album: Universal Mambo
  type: MusicAlbum
  date published: 2023-12-01
  track: Universal Mambo
    type: MusicRecording
    duration: PT2M57S
    duration ms: 177777
    explicit: true
    by artist: De Martijn
    in album: Universal Mambo
    genre: tropical house
    isrc code: CHD782300466
    additional property: CopyrightID
    additional property: CopyrightStatus
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Universal Mambo
album: Universal Mambo (Remixes)
album: Serena
album: Ay Que Delicia
album: Serena (Afro House Mix)
album: Through the Waves (Ibiza Sunset Remix)
album: It's a Fine Day (Afro House Mix)
album: Things
album: No Pares
album: La Pasión
track: Drop It

Drop It
type: MusicRecording
duration: PT2M38S
duration ms: 158969
explicit: false
by artist: Blinded Hearts
by artist: Alex Skrindo
by artist: De Martijn
by artist: Shibui
in album: Drop It
  type: MusicAlbum
  date published: 2021-02-05
isrc code: QM4TW2103524
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T04:16:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x33e49022918804eb689c7bfc385525183c60b38efd80c77092906dd713a160f9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2103524
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e49022918804eb689c7bfc385525183c60b38efd80c77092906dd713a160f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TW2103524.
  date published: 2026-07-02T03:30:09Z
audio: Drop It
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 134.325
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.704
  additional property: Energy
    type: PropertyValue
    value: 0.834
  additional property: Speechiness
    type: PropertyValue
    value: 0.08
  additional property: Acousticness
    type: PropertyValue
    value: 0.042
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.186
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.698
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.003
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

De Martijn
type: MusicGroup

Universal Mambo
type: MusicAlbum
date published: 2023-12-01

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-18T04:43:12+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x12f1e5b806a9617dd364e9d9ef7c3946a2c7eae6ac43f9d6656fc05a8216aa74

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958544

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958544

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CHD782300466

OTSTimestamp
type: PropertyValue
value: 2026-07-18T12:14:37Z

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 0x12f1e5b806a9617dd364e9d9ef7c3946a2c7eae6ac43f9d6656fc05a8216aa74. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CHD782300466.
date published: 2026-07-18T12:14:37Z

Universal Mambo
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 107.945
additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.738
additional property: Energy
  type: PropertyValue
  value: 0.808
additional property: Speechiness
  type: PropertyValue
  value: 0.046
additional property: Acousticness
  type: PropertyValue
  value: 0.106
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.365
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.598
additional property: Loudness (dB)
  type: PropertyValue
  value: -4.446
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major

Universal Mambo (Remixes)
type: MusicAlbum
date published: 2024-02-09

Universal Mambo
type: MusicAlbum
date published: 2024-03-15

Serena
type: MusicAlbum
date published: 2024-04-26

Ay Que Delicia
type: MusicAlbum
date published: 2024-07-12

Serena (Afro House Mix)
type: MusicAlbum
date published: 2024-10-11

Through the Waves (Ibiza Sunset Remix)
type: MusicAlbum
date published: 2024-11-01

It's a Fine Day (Afro House Mix)
type: MusicAlbum
date published: 2024-11-29

Things
type: MusicAlbum
date published: 2025-03-21

No Pares
type: MusicAlbum
date published: 2025-08-01

La Pasión
type: MusicAlbum
date published: 2025-10-17