Bert Hadders en de Nozems
type: MusicGroup
popularity: 7
followers: 590
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/2fdc4f59-4ed3-4fc6-9081-4611bef429ea.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2fdc4f59-4ed3-4fc6-9081-4611bef429ea.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2fdc4f59-4ed3-4fc6-9081-4611bef429ea
additional property: OTSTimestamp
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  value: 2026-06-16T20:04:35Z
additional property: OTSCanonicalRecord
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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
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf396a2421de0d3bec0a3058dfee9761020ac8a0bf4a71bf99f3f78823002d28e. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2fdc4f59-4ed3-4fc6-9081-4611bef429ea.json and https://artists.proofprofile.net/proofs/artist/2fdc4f59-4ed3-4fc6-9081-4611bef429ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xf396a2421de0d3bec0a3058dfee9761020ac8a0bf4a71bf99f3f78823002d28e","name":"Bert Hadders en de Nozems","registered_at":"2026-06-16T06:18:04Z","symbol":"NIM0963669","token_address":"0x7f31b77427f06b314ecd49bae03323e5e3d137ae","type":"artist","uuid":"2fdc4f59-4ed3-4fc6-9081-4611bef429ea"}
album: Over De Badde
  type: MusicAlbum
  date published: 2010-05-15
album: Elvis, Keuning Van De Bunermond
  type: MusicAlbum
  date published: 2011-02-25
album: De Coöperoazie
  type: MusicAlbum
  date published: 2012-02-07
  track: Poolse Bruid (feat. Bonnie Boonstra)
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    by artist: Bert Hadders en de Nozems
    in album: De Coöperoazie
      type: MusicAlbum
      date published: 2012-02-07
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    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLLB71200003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0xab0118ddbc4463100eeeec97c868475911fd766d2af9b69385665cbc04fd42ee. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLLB71200003.
      date published: 2026-07-05T18:48:28Z
    audio: Poolse Bruid (feat. Bonnie Boonstra)
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      additional property: Tempo (BPM)
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        value: 188.32
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.456
      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.058
      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.316
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.926
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.268
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: De Bosklopper Tapes
  type: MusicAlbum
  date published: 2014-09-20
  track: Beloofde Laand
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    duration: PT2M55S
    duration ms: 175436
    explicit: false
    by artist: Bert Hadders en de Nozems
    in album: De Bosklopper Tapes
      type: MusicAlbum
      date published: 2014-09-20
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    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLLB71400002
    additional property: OTSTimestamp
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      value: 2026-07-05T01:12:41Z
    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 0xdb4bcc917f35df68d25d4f4695ebec55aed6402c15f128aa81518db0d91376cf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLLB71400002.
      date published: 2026-07-05T01:12:41Z
    audio: Beloofde Laand
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 111.669
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
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      additional property: Time Signature
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        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.682
      additional property: Energy
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        value: 0.663
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.267
      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: Kolk
album: Geppie
album: Tjeu
album: Radio Geluk
album: Weltmeister (Nummer 1)

Liveness
type: PropertyValue
value: 0.258

Valence (Positivity)
type: PropertyValue
value: 0.742

Loudness (dB)
type: PropertyValue
value: -8.894

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

Kolk
type: MusicAlbum
date published: 2016-10-08

Geppie
type: MusicAlbum
date published: 2018-01-18

Tjeu
type: MusicAlbum
date published: 2018-02-03

Radio Geluk
type: MusicAlbum
date published: 2021-04-04

Weltmeister (Nummer 1)
type: MusicAlbum
date published: 2021-06-17