De Tweezakken
type: MusicGroup
popularity: 14
followers: 565
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb533520c9f19bdf80212f095ec852144863af1d5f877ea3aa472904b30c17626
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953701
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953701
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7619a9f5-c7d7-4ebc-8aeb-ab2ce162d22c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7619a9f5-c7d7-4ebc-8aeb-ab2ce162d22c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7619a9f5-c7d7-4ebc-8aeb-ab2ce162d22c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:16:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb533520c9f19bdf80212f095ec852144863af1d5f877ea3aa472904b30c17626","name":"De Tweezakken","registered_at":"2026-06-14T16:48:04Z","symbol":"NIM0514978","token_address":"0x1996ae92988474c2fbc2e4b7c023ffbedb9b3d23","type":"artist","uuid":"7619a9f5-c7d7-4ebc-8aeb-ab2ce162d22c"}
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 0xb533520c9f19bdf80212f095ec852144863af1d5f877ea3aa472904b30c17626. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7619a9f5-c7d7-4ebc-8aeb-ab2ce162d22c.json and https://artists.proofprofile.net/proofs/artist/7619a9f5-c7d7-4ebc-8aeb-ab2ce162d22c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:16:40Z
  text: {"copyright_id":"0xb533520c9f19bdf80212f095ec852144863af1d5f877ea3aa472904b30c17626","name":"De Tweezakken","registered_at":"2026-06-14T16:48:04Z","symbol":"NIM0514978","token_address":"0x1996ae92988474c2fbc2e4b7c023ffbedb9b3d23","type":"artist","uuid":"7619a9f5-c7d7-4ebc-8aeb-ab2ce162d22c"}
album: 4x Bier
  type: MusicAlbum
  date published: 2019-01-11
album: 4x Bier
  type: MusicAlbum
  date published: 2019-01-11
album: Brabant gaat weer los!
  type: MusicAlbum
  date published: 2020-01-10
album: Brabant gaat weer los!
  type: MusicAlbum
  date published: 2020-01-10
album: Op naar de après-ski!
  type: MusicAlbum
  date published: 2021-02-12
album: Hey gooi die tapkraan eens open!
  type: MusicAlbum
  date published: 2021-07-16
album: Wie wil er m'n Cobra zien?
  type: MusicAlbum
  date published: 2022-02-18
  track: Wie wil er m'n Cobra zien?
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216970
    explicit: false
    by artist: De Tweezakken
    in album: Wie wil er m'n Cobra zien?
      type: MusicAlbum
      date published: 2022-02-18
    isrc code: NLW2R2250354
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T04:43:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x340fba00863f198575f00ac93aa942c8bdd29de8e36a59a907735a5babd8f002
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958245
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958245
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW2R2250354
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T07:46:41Z
    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 0x340fba00863f198575f00ac93aa942c8bdd29de8e36a59a907735a5babd8f002. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:41Z), 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/NLW2R2250354.
      date published: 2026-07-16T07:46:41Z
    audio: Wie wil er m'n Cobra zien?
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.875
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.747
      additional property: Energy
        type: PropertyValue
        value: 0.794
      additional property: Speechiness
        type: PropertyValue
        value: 0.133
      additional property: Acousticness
        type: PropertyValue
        value: 0.326
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.321
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.966
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.57
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Wij zijn Holland!
  type: MusicAlbum
  date published: 2022-09-22
album: Wij Zijn Holland! (Devatorz Hardstyle Remix)
  type: MusicAlbum
  date published: 2022-11-16
album: Bettie akkem aai?
  type: MusicAlbum
  date published: 2023-01-03
album: We zakken naar de grond
  type: MusicAlbum
  date published: 2023-06-30
track: Bettie Akkem Aai?

Bettie Akkem Aai?
type: MusicRecording
duration: PT3M25S
duration ms: 205071
explicit: false
by artist: De Tweezakken
by artist: LA Sound
in album: Carnaval 2023
  type: MusicAlbum
  date published: 2023-02-12
isrc code: NLW5M2300025
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T22:42:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x953fa41d628d06c0cb8497e6520170b9fcc9f2616ea7c475018c6d26709f95b3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW5M2300025
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
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: 957120
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:22:41+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 0x953fa41d628d06c0cb8497e6520170b9fcc9f2616ea7c475018c6d26709f95b3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLW5M2300025.
  date published: 2026-07-08T08:56:20Z
audio: Bettie Akkem Aai?
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.225
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.785
  additional property: Energy
    type: PropertyValue
    value: 0.937
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.176
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.294
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.978
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.78
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major