Bassie & Adriaan
type: MusicGroup
genre: children's music
description: Bassie & Adriaan was a television program series focusing on the adventures and lives of a circus duo consisting of clown Bassie and acrobat Adriaan, played by real-life circus duo and . Written by
popularity: 37
followers: 12141
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x72e25949407621de6fdeb4f1cf260518f6a1ef72e7a6199a2bd4ad9150037960
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/115b5995-860c-4f60-8031-02d3c0606cff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/115b5995-860c-4f60-8031-02d3c0606cff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/115b5995-860c-4f60-8031-02d3c0606cff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x72e25949407621de6fdeb4f1cf260518f6a1ef72e7a6199a2bd4ad9150037960","name":"Bassie & Adriaan","registered_at":"2026-06-11T12:07:26Z","symbol":"NIM0023350","token_address":"0x6c2487b00b7ca898353ccf0be2be3577c012d8d4","type":"artist","uuid":"115b5995-860c-4f60-8031-02d3c0606cff"}
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 0x72e25949407621de6fdeb4f1cf260518f6a1ef72e7a6199a2bd4ad9150037960. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/115b5995-860c-4f60-8031-02d3c0606cff.json and https://artists.proofprofile.net/proofs/artist/115b5995-860c-4f60-8031-02d3c0606cff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x72e25949407621de6fdeb4f1cf260518f6a1ef72e7a6199a2bd4ad9150037960","name":"Bassie & Adriaan","registered_at":"2026-06-11T12:07:26Z","symbol":"NIM0023350","token_address":"0x6c2487b00b7ca898353ccf0be2be3577c012d8d4","type":"artist","uuid":"115b5995-860c-4f60-8031-02d3c0606cff"}
album: Met 18 Liedjes (Van De Tros Televisie-Serie)
  type: MusicAlbum
  date published: 1978-01-01
  track: Bassie En Adriaan - Intro
    type: MusicRecording
    duration: PT1M7S
    duration ms: 67333
    explicit: false
    by artist: Bassie & Adriaan
    in album: Met 18 Liedjes (Van De Tros Televisie-Serie)
      type: MusicAlbum
      date published: 1978-01-01
    genre: children's music
    isrc code: NLUM72001163
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T20:42:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0c750c6926cfc6743e11f5d3721f56f8c0c1ef7a00aa0370d3789e920cf1516c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958783
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958783
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72001163
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T23:45:35Z
    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 0x0c750c6926cfc6743e11f5d3721f56f8c0c1ef7a00aa0370d3789e920cf1516c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:45:35Z), 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/NLUM72001163.
      date published: 2026-07-19T23:45:35Z
    audio: Bassie En Adriaan - Intro
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.656
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 1
      additional property: Danceability
        type: PropertyValue
        value: 0.729
      additional property: Energy
        type: PropertyValue
        value: 0.193
      additional property: Speechiness
        type: PropertyValue
        value: 0.842
      additional property: Acousticness
        type: PropertyValue
        value: 0.79
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.835
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.002
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Het Bakkerslied
    type: MusicRecording
    duration: PT2M16S
    duration ms: 136106
    explicit: false
    by artist: Bassie & Adriaan
    in album: Met 18 Liedjes (Van De Tros Televisie-Serie)
      type: MusicAlbum
      date published: 1978-01-01
    genre: children's music
    isrc code: NLUM72001166
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x89f2fe9bdab953ee5e85db5b34ea91693d2685b6a79a971b62f709de9147da13
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956776
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956776
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72001166
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:59:37Z
    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 0x89f2fe9bdab953ee5e85db5b34ea91693d2685b6a79a971b62f709de9147da13. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLUM72001166.
      date published: 2026-07-05T10:59:37Z
    audio: Het Bakkerslied
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 87.155
      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: 0.684
      additional property: Energy
        type: PropertyValue
        value: 0.327
      additional property: Speechiness
        type: PropertyValue
        value: 0.485
      additional property: Acousticness
        type: PropertyValue
        value: 0.784
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.218
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: ABC "Het Alfabet"
  track: Acrobatenlied
  track: De Vrachtwagenchauffeur
  track: De Kraanmachinist
  track: Zijn Wij Bij De Politie?
album: Olé (Van De Tros Televisie-Serie)
album: Feest Met Bassie En Adriaan (Liedjes En Praatjes Met Bassie & Adriaan)
album: Avonturen Met Bassie En Adriaan (Van De Tros Televisie-Serie)
album: Als Geheime Agenten
album: Circus Bassie & Adriaan
album: Drommels
album: Reizen en zingen
album: De Leukste Liedjes deel 1
album: De Leukste Liedjes deel 2
album: Bassie & Adriaan Live
album: De 12 mooiste ballades
album: De 12 Mooiste Ballades
album: Reizen & Zingen
album: De Leukste Liedjes Deel 2
album: 25 Jaar Feest
album: Radiostation 1
album: De Leukste Liedjes - Deel 1
album: Bassie & Adriaan Live!
album: Original Soundtrack Album Deel 2
album: De Leukste Liedjes - Deel 2
album: 60 Liedjes Uit Grootmoeders Tijd - Deel 2
album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
album: Alle Sinterklaasliedjes
album: Op Reis Door Europa
album: De Reis Vol Verrassingen
album: Sinterklaas Op Bezoek Bij Bassie & Adriaan
album: Sinterklaas Op Bezoek Bij
album: Liedjes van TV Deel 1
album: Liedjes van TV Deel 2
album: Liedjes van TV Deel 3
album: Liedjes van TV Deel 4
album: Liedjes van TV Deel 5
album: Karaoke Feest
album: De Verdwenen Schat (Hoorspel)
album: Op Schattenjacht (Hoorspel)
album: De Verzonken Stad
album: Radiostation 2 Vanuit Griekenland
album: Benidorm (Zomerse Versie)
album: De Spaanse Zon (Zomerse Versie)

Valence (Positivity)
type: PropertyValue
value: 0.85

Loudness (dB)
type: PropertyValue
value: -14.973

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

ABC "Het Alfabet"
type: MusicRecording
duration: PT2M35S
duration ms: 155266
explicit: false
by artist: Bassie & Adriaan
in album: Met 18 Liedjes (Van De Tros Televisie-Serie)
  type: MusicAlbum
  date published: 1978-01-01
genre: children's music
isrc code: NLUM72001179
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T20:18:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x948f4fb73ae1ecf40744b3be3264270c3aba2c247c450d64630ff8ad0cee054a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956738
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956738
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72001179
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T04:47:21Z
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 0x948f4fb73ae1ecf40744b3be3264270c3aba2c247c450d64630ff8ad0cee054a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLUM72001179.
  date published: 2026-07-05T04:47:21Z
audio: ABC "Het Alfabet"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 156.207
  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: 0.653
  additional property: Energy
    type: PropertyValue
    value: 0.352
  additional property: Speechiness
    type: PropertyValue
    value: 0.582
  additional property: Acousticness
    type: PropertyValue
    value: 0.752
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.861
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.262
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Acrobatenlied
type: MusicRecording
duration: PT3M17S
duration ms: 197333
explicit: false
by artist: Bassie & Adriaan
in album: Met 18 Liedjes (Van De Tros Televisie-Serie)
  type: MusicAlbum
  date published: 1978-01-01
genre: children's music
isrc code: NLUM72001167
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T05:52:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc1ded39e4b7d0fcd4e9bafcdaadaf9edee5618f6017a6eea0a033b53eaaa0cf6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958690
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958690
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72001167
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T07:14:39Z
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 0xc1ded39e4b7d0fcd4e9bafcdaadaf9edee5618f6017a6eea0a033b53eaaa0cf6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLUM72001167.
  date published: 2026-07-19T07:14:39Z
audio: Acrobatenlied
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 157.765
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.706
  additional property: Energy
    type: PropertyValue
    value: 0.339
  additional property: Speechiness
    type: PropertyValue
    value: 0.795
  additional property: Acousticness
    type: PropertyValue
    value: 0.748
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.189
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.759
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.423
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

De Vrachtwagenchauffeur
type: MusicRecording
duration: PT1M30S
duration ms: 90706
explicit: false
by artist: Bassie & Adriaan
in album: Met 18 Liedjes (Van De Tros Televisie-Serie)
  type: MusicAlbum
  date published: 1978-01-01
genre: children's music
isrc code: NLUM72001169
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T09:21:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa10fb918318154f19d95f8268042fde704c7dd50d79e17d18dbb74caab285674
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958444
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958444
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72001169
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T19:12:23Z
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 0xa10fb918318154f19d95f8268042fde704c7dd50d79e17d18dbb74caab285674. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLUM72001169.
  date published: 2026-07-17T19:12:23Z
audio: De Vrachtwagenchauffeur
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 161.889
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.627
  additional property: Energy
    type: PropertyValue
    value: 0.348
  additional property: Speechiness
    type: PropertyValue
    value: 0.43
  additional property: Acousticness
    type: PropertyValue
    value: 0.767
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.56
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.8
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.148
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

De Kraanmachinist
type: MusicRecording
duration: PT2M5S
duration ms: 125333
explicit: false
by artist: Bassie & Adriaan
in album: Met 18 Liedjes (Van De Tros Televisie-Serie)
  type: MusicAlbum
  date published: 1978-01-01
genre: children's music
isrc code: NLUM72001173
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T20:18:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0841a879d1c9c2ea914264d3b53c27d1fc303863ef0479c5ab206a197eb84c0c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956856
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956856
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72001173
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
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
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  date published: 2026-07-06T01:25:57Z
audio: De Kraanmachinist
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    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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    value: 0.682
  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Zijn Wij Bij De Politie?
type: MusicRecording
duration: PT2M16S
duration ms: 136866
explicit: false
by artist: Bassie & Adriaan
in album: Met 18 Liedjes (Van De Tros Televisie-Serie)
  type: MusicAlbum
  date published: 1978-01-01
genre: children's music
isrc code: NLUM72001174
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x7d7384f09e5a8aed08e9db72b6a9dae82738569a34e18ee0f4a41312c39b8900
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956560
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72001174
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T23:28:02Z
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 0x7d7384f09e5a8aed08e9db72b6a9dae82738569a34e18ee0f4a41312c39b8900. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLUM72001174.
  date published: 2026-07-03T23:28:02Z
audio: Zijn Wij Bij De Politie?
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  additional property: Musical Key
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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Olé (Van De Tros Televisie-Serie)
type: MusicAlbum
date published: 1978-01-01
track: Goeiemorgen
  type: MusicRecording
  duration: PT2M43S
  duration ms: 163773
  explicit: false
  by artist: Bassie & Adriaan
  in album: Olé (Van De Tros Televisie-Serie)
    type: MusicAlbum
    date published: 1978-01-01
  genre: children's music
  isrc code: NLUM72001183
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xb26daa4638cec3a9b4c66751af92f5f20e4769aa04c8f7f6812a3d06ce392ee7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72001183
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T00:53:26Z
  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 0xb26daa4638cec3a9b4c66751af92f5f20e4769aa04c8f7f6812a3d06ce392ee7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLUM72001183.
    date published: 2026-07-17T00:53:26Z
  audio: Goeiemorgen
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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Feest Met Bassie En Adriaan (Liedjes En Praatjes Met Bassie & Adriaan)
type: MusicAlbum
date published: 1979-01-01

Avonturen Met Bassie En Adriaan (Van De Tros Televisie-Serie)
type: MusicAlbum
date published: 1979-01-01
track: Het Circus Is In De Stad
  type: MusicRecording
  duration: PT5M5S
  duration ms: 305520
  explicit: false
  by artist: Bassie & Adriaan
  in album: Avonturen Met Bassie En Adriaan (Van De Tros Televisie-Serie)
    type: MusicAlbum
    date published: 1979-01-01
  genre: children's music
  isrc code: NLUM72100059
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T10:40:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x28d0f5f44f49db66c1b4ef564cb978298b5ff0bc56f6557a92ed91a4713d4c03
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM72100059
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T11:02:33Z
  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 0x28d0f5f44f49db66c1b4ef564cb978298b5ff0bc56f6557a92ed91a4713d4c03. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/NLUM72100059.
    date published: 2026-07-19T11:02:33Z
  audio: Het Circus Is In De Stad
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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Als Geheime Agenten
type: MusicAlbum
date published: 1982

Circus Bassie & Adriaan
type: MusicAlbum
date published: 1982

Drommels
type: MusicAlbum
date published: 1994-01-01

Reizen en zingen
type: MusicAlbum
date published: 2007

De Leukste Liedjes deel 1
type: MusicAlbum
date published: 2007

De Leukste Liedjes deel 2
type: MusicAlbum
date published: 2007

Bassie & Adriaan Live
type: MusicAlbum
date published: 2007

De 12 mooiste ballades
type: MusicAlbum
date published: 2007

De 12 Mooiste Ballades
type: MusicAlbum
date published: 2012-07-05

Reizen & Zingen
type: MusicAlbum
date published: 2012-07-05

De Leukste Liedjes Deel 2
type: MusicAlbum
date published: 2012-07-05

25 Jaar Feest
type: MusicAlbum
date published: 2012-07-05
track: Kom We Gaan Er Weer Tegen Aan
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  by artist: Bassie & Adriaan
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    type: MusicAlbum
    date published: 2012-07-05
  genre: children's music
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    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071200082
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T10:04:33Z
  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 0x25fcbe6484c1e99af8164b1a47e62eaf27d74dbc34db6126b4695a129261a506. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLK071200082.
    date published: 2026-07-04T10:04:33Z
  audio: Kom We Gaan Er Weer Tegen Aan
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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track: Veilig Oversteken
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  by artist: Bassie & Adriaan
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    type: MusicAlbum
    date published: 2012-07-05
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  additional property: CopyrightStatus
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:43:49Z
  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 0x97bfd1b676d7acda235c2021dc46c2f142ae01c53a91c501c6991620339e8aac. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLK071200084.
    date published: 2026-07-05T01:43:49Z
  audio: Veilig Oversteken
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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Reizen & Zingen
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date published: 2012-07-05
track: De Engelse Les
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    type: MusicAlbum
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071200043
  additional property: OTSTimestamp
    type: PropertyValue
    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 0xfd98ea8e89deb197de358a0628ae9b7be95d52d871c73102d10a2030b8243198. 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/NLK071200043.
    date published: 2026-07-05T01:12:41Z
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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      value: Bb
    additional property: Mode Name
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track: De Spaanse Zon
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071200044
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T07:21:02Z
  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 0x8a04d48bf4f37b1ec554929501425c7d222485bb88a2cbfceef29c824601c19c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:02Z), 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/NLK071200044.
    date published: 2026-07-16T07:21:02Z
  audio: De Spaanse Zon
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.744
    additional property: Energy
      type: PropertyValue
      value: 0.536
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.42
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.344
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.8
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.301
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Had Ik Nou Maar Nee/Ja Gezegd
  type: MusicRecording
  duration: PT3M24S
  duration ms: 204516
  explicit: false
  by artist: Bassie & Adriaan
  in album: Reizen & Zingen
    type: MusicAlbum
    date published: 2012-07-05
  genre: children's music
  isrc code: NLK071200050
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T04:27:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xaca0fc1bc83e0dac9c38cede2a957d982bf46dce3bed5be1a6db31bb78bb257c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956776
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956776
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Had Ik Nou Maar Nee/Ja Gezegd

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071200050

OTSTimestamp
type: PropertyValue
value: 2026-07-05T10:59:37Z

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 0xaca0fc1bc83e0dac9c38cede2a957d982bf46dce3bed5be1a6db31bb78bb257c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLK071200050.
date published: 2026-07-05T10:59:37Z

Had Ik Nou Maar Nee/Ja Gezegd
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 122.938
additional property: Musical Key
  type: PropertyValue
  value: 5
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.832
additional property: Energy
  type: PropertyValue
  value: 0.609
additional property: Speechiness
  type: PropertyValue
  value: 0.046
additional property: Acousticness
  type: PropertyValue
  value: 0.558
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.262
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.854
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.356
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Major

Radiostation 1
type: MusicAlbum
date published: 2012-07-05

De Leukste Liedjes - Deel 1
type: MusicAlbum
date published: 2012-07-05

25 Jaar Feest
type: MusicAlbum
date published: 2012-07-05

De 12 Mooiste Ballades
type: MusicAlbum
date published: 2012-07-05

Bassie & Adriaan Live!
type: MusicAlbum
date published: 2012-07-05

Bassie & Adriaan Live!
type: MusicAlbum
date published: 2012-07-05

Radiostation 1
type: MusicAlbum
date published: 2012-07-05

Original Soundtrack Album Deel 2
type: MusicAlbum
date published: 2013-03-01

Original Soundtrack Album Deel 2
type: MusicAlbum
date published: 2013-03-01
track: Dreigende Bellen
  type: MusicRecording
  duration: PT1M16S
  duration ms: 76640
  explicit: false
  by artist: Bassie & Adriaan
  in album: Original Soundtrack Album Deel 2
    type: MusicAlbum
    date published: 2013-03-01
  genre: children's music
  isrc code: NLK071300188
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T23:45:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0f2a9156291a26fdf6b5fe92e5528fb28e18b8f223be6606a8bb4ba9a44bca33
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956857
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956857
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071300188
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:26:17Z
  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 0x0f2a9156291a26fdf6b5fe92e5528fb28e18b8f223be6606a8bb4ba9a44bca33. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLK071300188.
    date published: 2026-07-06T01:26:17Z
  audio: Dreigende Bellen
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 170.057
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.491
    additional property: Energy
      type: PropertyValue
      value: 0.295
    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.898
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.848
    additional property: Liveness
      type: PropertyValue
      value: 0.069
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.139
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.933
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major

Original Soundtrack Album Deel 2
type: MusicAlbum
date published: 2013-04-25

De Leukste Liedjes - Deel 1
type: MusicAlbum
date published: 2016-07-18

De Leukste Liedjes - Deel 2
type: MusicAlbum
date published: 2016-07-18
track: Zeg Stel Je Eens Voor
  type: MusicRecording
  duration: PT3M13S
  duration ms: 193973
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Leukste Liedjes - Deel 2
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T16:14:14+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x73aa9fd9d3c4f1a94ed09c1c1d077437b8fd46029cb31e62dcc544748d682077
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958436
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600080
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T16:42:22Z
  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 0x73aa9fd9d3c4f1a94ed09c1c1d077437b8fd46029cb31e62dcc544748d682077. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLK071600080.
    date published: 2026-07-17T16:42:22Z
  audio: Zeg Stel Je Eens Voor
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 112.197
    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: 0.762
    additional property: Energy
      type: PropertyValue
      value: 0.65
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.08
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.543
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.964
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.787
    additional property: Key Name
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      value: C#
    additional property: Mode Name
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      value: Major
track: Mac Bassie
  type: MusicRecording
  duration: PT1M53S
  duration ms: 113693
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Leukste Liedjes - Deel 2
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T09:41:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x978edc42edc7c2ad6321e0d8aeedf71db7681961dd213a6c1c2c26ca03b4225c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956656
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956656
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600081
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T14:03:39Z
  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 0x978edc42edc7c2ad6321e0d8aeedf71db7681961dd213a6c1c2c26ca03b4225c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLK071600081.
    date published: 2026-07-04T14:03:39Z
  audio: Mac Bassie
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.821
    additional property: Energy
      type: PropertyValue
      value: 0.631
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.179
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.255
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.964
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.233
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Op De Kermis
  type: MusicRecording
  duration: PT3M20S
  duration ms: 200506
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Leukste Liedjes - Deel 2
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-11T16:52:13+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc5e85cf18128d16b7ef1e8270dc315eab129d726fb6ff3828f4ae7e44c145153
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957591
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Op De Kermis
track: De Dierentaal
track: Het Hondenkoor
track: Mijn Rode Neus
track: De Muis En Olifant
track: Wij Zijn Reuzen
track: Kapitein Bassie
track: Geheime Agenten
track: Alles Is Voor Bassie

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600082

OTSTimestamp
type: PropertyValue
value: 2026-07-11T17:21:30Z

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 0xc5e85cf18128d16b7ef1e8270dc315eab129d726fb6ff3828f4ae7e44c145153. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/NLK071600082.
date published: 2026-07-11T17:21:30Z

Op De Kermis
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 117.2
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: 0.788
additional property: Energy
  type: PropertyValue
  value: 0.739
additional property: Speechiness
  type: PropertyValue
  value: 0.064
additional property: Acousticness
  type: PropertyValue
  value: 0.306
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.331
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.925
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.213
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

De Dierentaal
type: MusicRecording
duration: PT2M33S
duration ms: 153760
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 2
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600083
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T00:05:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4c76b9cce29656f8a828387abf51a04ac901772e89104146a6bf7a39445914e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958340
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600083
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T03:07:18Z
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 0xe4c76b9cce29656f8a828387abf51a04ac901772e89104146a6bf7a39445914e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:18Z), 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/NLK071600083.
  date published: 2026-07-17T03:07:18Z
audio: De Dierentaal
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.208
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.852
  additional property: Energy
    type: PropertyValue
    value: 0.806
  additional property: Speechiness
    type: PropertyValue
    value: 0.06
  additional property: Acousticness
    type: PropertyValue
    value: 0.206
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.233
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.972
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.403
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Het Hondenkoor
type: MusicRecording
duration: PT2M23S
duration ms: 143466
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 2
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600084
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T21:47:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb19746050e8424af496f3feda01a3734f8d9b14b272fa592f8199f03a9739aa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956639
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956639
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600084
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T11:19:20Z
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 0xcb19746050e8424af496f3feda01a3734f8d9b14b272fa592f8199f03a9739aa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLK071600084.
  date published: 2026-07-04T11:19:20Z
audio: Het Hondenkoor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.216
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.799
  additional property: Energy
    type: PropertyValue
    value: 0.743
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.274
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.061
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.961
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.32
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Mijn Rode Neus
type: MusicRecording
duration: PT2M9S
duration ms: 129400
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 2
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600085
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-02T20:46:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaaba38fcd6fb3148237b694d83899daddbfb5cb13421605e449365493e559f99
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956396
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956396
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600085
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T02:52:17Z
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 0xaaba38fcd6fb3148237b694d83899daddbfb5cb13421605e449365493e559f99. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:52:17Z), 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/NLK071600085.
  date published: 2026-07-17T02:52:17Z
audio: Mijn Rode Neus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.121
  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: 0.875
  additional property: Energy
    type: PropertyValue
    value: 0.731
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.417
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.924
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.961
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.075
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

De Muis En Olifant
type: MusicRecording
duration: PT2M12S
duration ms: 132040
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 2
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600087
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T11:20:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb120727bdb251f1a2d0af0a7230d3e2360222945ed5f7265fa8316ecee3001bd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958728
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600087
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T15:41:32Z
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 0xb120727bdb251f1a2d0af0a7230d3e2360222945ed5f7265fa8316ecee3001bd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T15:41:32Z), 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/NLK071600087.
  date published: 2026-07-19T15:41:32Z
audio: De Muis En Olifant
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.16
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.859
  additional property: Energy
    type: PropertyValue
    value: 0.637
  additional property: Speechiness
    type: PropertyValue
    value: 0.072
  additional property: Acousticness
    type: PropertyValue
    value: 0.231
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.28
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.804
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.444
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Wij Zijn Reuzen
type: MusicRecording
duration: PT2M6S
duration ms: 126960
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 2
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600089
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T20:49:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x96c93ad15629e68ee06acef300bfa942c8f22da5e97e4afe50d23b3222ca6328
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958783
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958783
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600089
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T23:52:48Z
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 0x96c93ad15629e68ee06acef300bfa942c8f22da5e97e4afe50d23b3222ca6328. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:52:48Z), 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/NLK071600089.
  date published: 2026-07-19T23:52:48Z
audio: Wij Zijn Reuzen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.091
  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: 0.827
  additional property: Energy
    type: PropertyValue
    value: 0.523
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.197
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.04
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.963
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.187
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kapitein Bassie
type: MusicRecording
duration: PT2M13S
duration ms: 133906
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 2
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600090
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T08:40:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb9a5c778544ac175594331db9e54e1cdaf46840b2bed5d1fe94c1c5a30fcf3b9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956634
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956634
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600090
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T10:04:33Z
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 0xb9a5c778544ac175594331db9e54e1cdaf46840b2bed5d1fe94c1c5a30fcf3b9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLK071600090.
  date published: 2026-07-04T10:04:33Z
audio: Kapitein Bassie
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.128
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.832
  additional property: Energy
    type: PropertyValue
    value: 0.595
  additional property: Speechiness
    type: PropertyValue
    value: 0.089
  additional property: Acousticness
    type: PropertyValue
    value: 0.544
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.164
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.969
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.084
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Geheime Agenten
type: MusicRecording
duration: PT2M36S
duration ms: 156400
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 2
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600091
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T21:54:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d9c9db33595d8e95d007e79cdcbf0f0d550b330dd17bfdc804734295efc998c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956856
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956856
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600091
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
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 0x0d9c9db33595d8e95d007e79cdcbf0f0d550b330dd17bfdc804734295efc998c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLK071600091.
  date published: 2026-07-06T01:25:57Z
audio: Geheime Agenten
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.127
  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: 0.792
  additional property: Energy
    type: PropertyValue
    value: 0.868
  additional property: Speechiness
    type: PropertyValue
    value: 0.062
  additional property: Acousticness
    type: PropertyValue
    value: 0.115
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.88
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.545
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Alles Is Voor Bassie
type: MusicRecording
duration: PT3M1S
duration ms: 181333
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 2
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600092
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T14:50:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b42ea8f6d90b5ec1b57de0f2c432504ebe43371de77169861a2115778c7c7fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956725
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956725
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600092
additional property: OTSTimestamp
  type: PropertyValue
  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 0x0b42ea8f6d90b5ec1b57de0f2c432504ebe43371de77169861a2115778c7c7fd. 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/NLK071600092.
  date published: 2026-07-05T01:12:41Z
audio: Alles Is Voor Bassie
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.212
  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: 0.842
  additional property: Energy
    type: PropertyValue
    value: 0.678
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.142
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.126
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.972
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.704
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

60 Liedjes Uit Grootmoeders Tijd - Deel 2
type: MusicAlbum
date published: 2016-07-18

60 Liedjes Uit Grootmoeders Tijd - Deel 1
type: MusicAlbum
date published: 2016-07-18
track: Kortjakje
  type: MusicRecording
  duration: PT2M38S
  duration ms: 158866
  explicit: false
  by artist: Bassie & Adriaan
  in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
  isrc code: NLK071600030
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T17:47:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2eb6e71c7b5008416362ee87bf8d00632d8e4b6ef361b9c677d5a606a09be9cf
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600030
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0x2eb6e71c7b5008416362ee87bf8d00632d8e4b6ef361b9c677d5a606a09be9cf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLK071600030.
    date published: 2026-07-03T19:59:51Z
  audio: Kortjakje
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 174.379
    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: 0.651
    additional property: Energy
      type: PropertyValue
      value: 0.45
    additional property: Speechiness
      type: PropertyValue
      value: 0.247
    additional property: Acousticness
      type: PropertyValue
      value: 0.383
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.344
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.849
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.31
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Twee Emmertjes Water Halen
  type: MusicRecording
  duration: PT2M59S
  duration ms: 179866
  explicit: false
  by artist: Bassie & Adriaan
  in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
  isrc code: NLK071600031
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T22:23:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x98ccc43ca2786dcf8c6a8826aec8de4c8174deff1b089973b3acdf05452ebe93
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958335
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958335
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600031
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T22:37:47Z
  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 0x98ccc43ca2786dcf8c6a8826aec8de4c8174deff1b089973b3acdf05452ebe93. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/NLK071600031.
    date published: 2026-07-16T22:37:47Z
  audio: Twee Emmertjes Water Halen
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 168.226
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.522
    additional property: Energy
      type: PropertyValue
      value: 0.485
    additional property: Speechiness
      type: PropertyValue
      value: 0.072
    additional property: Acousticness
      type: PropertyValue
      value: 0.357
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.116
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.669
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.438
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: In Den Haag Daar Woont Een Graaf
  type: MusicRecording
  duration: PT3M52S
  duration ms: 232200
  explicit: false
  by artist: Bassie & Adriaan
  in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
  isrc code: NLK071600032
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T08:27:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3ba750e899a4e6b6d673c42615133ab8fc20ed25808c594c113b31504fa73e46
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956634
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956634
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: In Den Haag Daar Woont Een Graaf
track: Wie Gaat Er Mee?
track: Hop Marjanneke
track: D'r Zaten Zeven Kikkertjes
track: 'k Heb M'n Wagen Volgeladen
track: 't Regent 't Zegent
track: Zagen Zagen Wiede Wiedewagen
track: Mooi Ietje Fietje
track: Klein Klein Kleutertje
track: 'k Zag Twee Beren
track: Rije Rije Rije In Een Wagentje

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600032

OTSTimestamp
type: PropertyValue
value: 2026-07-04T10:04:33Z

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 0x3ba750e899a4e6b6d673c42615133ab8fc20ed25808c594c113b31504fa73e46. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLK071600032.
date published: 2026-07-04T10:04:33Z

In Den Haag Daar Woont Een Graaf
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 113.82
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: 0.657
additional property: Energy
  type: PropertyValue
  value: 0.397
additional property: Speechiness
  type: PropertyValue
  value: 0.105
additional property: Acousticness
  type: PropertyValue
  value: 0.627
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.095
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.471
additional property: Loudness (dB)
  type: PropertyValue
  value: -14.175
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Wie Gaat Er Mee?
type: MusicRecording
duration: PT3M50S
duration ms: 230333
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600033
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T04:40:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8af1ba359043b039784461d6d117043adc6e8a0ba2ca4968230ca30c37ba7746
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/NLK071600033
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T07:42:15Z
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 0x8af1ba359043b039784461d6d117043adc6e8a0ba2ca4968230ca30c37ba7746. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:15Z), 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/NLK071600033.
  date published: 2026-07-16T07:42:15Z
audio: Wie Gaat Er Mee?
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.476
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.577
  additional property: Energy
    type: PropertyValue
    value: 0.525
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.603
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.787
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.203
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Hop Marjanneke
type: MusicRecording
duration: PT2M42S
duration ms: 162000
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600034
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T02:53:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb16c95b6287c7f885ea849244c3f819660988c71e6db3f9cb7b782ca0e45e7a1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956656
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956656
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600034
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T14:03:39Z
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 0xb16c95b6287c7f885ea849244c3f819660988c71e6db3f9cb7b782ca0e45e7a1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLK071600034.
  date published: 2026-07-04T14:03:39Z
audio: Hop Marjanneke
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 163.902
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.55
  additional property: Energy
    type: PropertyValue
    value: 0.659
  additional property: Speechiness
    type: PropertyValue
    value: 0.231
  additional property: Acousticness
    type: PropertyValue
    value: 0.399
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.177
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.798
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.479
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

D'r Zaten Zeven Kikkertjes
type: MusicRecording
duration: PT2M50S
duration ms: 170640
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600035
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T04:49:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x955c1df0ad73cf2ef9ab9832c9ed8e44ad2d9f0fbc43fc5e0199b69a3acdd9c7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958668
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958668
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600035
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T05:16:11Z
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 0x955c1df0ad73cf2ef9ab9832c9ed8e44ad2d9f0fbc43fc5e0199b69a3acdd9c7. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/NLK071600035.
  date published: 2026-07-19T05:16:11Z
audio: D'r Zaten Zeven Kikkertjes
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.145
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.566
  additional property: Energy
    type: PropertyValue
    value: 0.524
  additional property: Speechiness
    type: PropertyValue
    value: 0.069
  additional property: Acousticness
    type: PropertyValue
    value: 0.569
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.199
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.763
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.346
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

'k Heb M'n Wagen Volgeladen
type: MusicRecording
duration: PT3M15S
duration ms: 195533
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600036
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T19:53:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2de18ba1b9b62166d28ee22bdf4899b546a61f7345a98391aa9f3e0ae71127a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958775
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958775
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600036
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T20:13:58Z
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 0x2de18ba1b9b62166d28ee22bdf4899b546a61f7345a98391aa9f3e0ae71127a3. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/NLK071600036.
  date published: 2026-07-19T20:13:58Z
audio: 'k Heb M'n Wagen Volgeladen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.289
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.572
  additional property: Energy
    type: PropertyValue
    value: 0.592
  additional property: Speechiness
    type: PropertyValue
    value: 0.139
  additional property: Acousticness
    type: PropertyValue
    value: 0.619
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.302
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.778
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.815
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

't Regent 't Zegent
type: MusicRecording
duration: PT4M10S
duration ms: 250066
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600037
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T03:55:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa89fbc64fd445f494f8f7dd285c2060abc594aa7c9be27d0bd910c957d14b398
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956772
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956772
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600037
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T10:01:46Z
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 0xa89fbc64fd445f494f8f7dd285c2060abc594aa7c9be27d0bd910c957d14b398. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLK071600037.
  date published: 2026-07-05T10:01:46Z
audio: 't Regent 't Zegent
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 168.341
  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: 0.522
  additional property: Energy
    type: PropertyValue
    value: 0.628
  additional property: Speechiness
    type: PropertyValue
    value: 0.152
  additional property: Acousticness
    type: PropertyValue
    value: 0.615
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.057
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.9
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.754
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Zagen Zagen Wiede Wiedewagen
type: MusicRecording
duration: PT3M39S
duration ms: 219426
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600038
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T15:58:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04dfd702e2ab88a1e5c2b3f45fd73c4eb0da59d6924b3e26d7a01e11180d669d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956725
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956725
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600038
additional property: OTSTimestamp
  type: PropertyValue
  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 0x04dfd702e2ab88a1e5c2b3f45fd73c4eb0da59d6924b3e26d7a01e11180d669d. 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/NLK071600038.
  date published: 2026-07-05T01:12:41Z
audio: Zagen Zagen Wiede Wiedewagen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 161.14
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.5
  additional property: Energy
    type: PropertyValue
    value: 0.535
  additional property: Speechiness
    type: PropertyValue
    value: 0.083
  additional property: Acousticness
    type: PropertyValue
    value: 0.445
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.072
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.82
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.16
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Mooi Ietje Fietje
type: MusicRecording
duration: PT3M21S
duration ms: 201600
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600039
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T21:43:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9a177e1f974b5d5681dd65f6f345f7ae5a89ac38011809a9150c48509bc62347
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958788
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958788
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600039
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T22:07:06Z
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 0x9a177e1f974b5d5681dd65f6f345f7ae5a89ac38011809a9150c48509bc62347. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/NLK071600039.
  date published: 2026-07-19T22:07:06Z
audio: Mooi Ietje Fietje
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 160.17
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.524
  additional property: Energy
    type: PropertyValue
    value: 0.551
  additional property: Speechiness
    type: PropertyValue
    value: 0.09
  additional property: Acousticness
    type: PropertyValue
    value: 0.335
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.415
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.826
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.156
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Klein Klein Kleutertje
type: MusicRecording
duration: PT5M16S
duration ms: 316506
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600040
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T15:21:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ee8525c442400ed0e5d171e4623ae9f9bd0a6c58ca6d6e03e682fb439bfa17c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956826
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956826
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600040
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T19:27:56Z
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 0x6ee8525c442400ed0e5d171e4623ae9f9bd0a6c58ca6d6e03e682fb439bfa17c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLK071600040.
  date published: 2026-07-05T19:27:56Z
audio: Klein Klein Kleutertje
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.068
  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: 0.515
  additional property: Energy
    type: PropertyValue
    value: 0.471
  additional property: Speechiness
    type: PropertyValue
    value: 0.094
  additional property: Acousticness
    type: PropertyValue
    value: 0.4
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.065
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.772
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.626
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

'k Zag Twee Beren
type: MusicRecording
duration: PT2M46S
duration ms: 166866
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600041
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T06:13:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xde1e2cd5e35882b13cb7f8cc84a58000cd3b1517bdd84473088dfb7ebd86720f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958686
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958686
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600041
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T06:43:29Z
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 0xde1e2cd5e35882b13cb7f8cc84a58000cd3b1517bdd84473088dfb7ebd86720f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/NLK071600041.
  date published: 2026-07-19T06:43:29Z
audio: 'k Zag Twee Beren
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 180.421
  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: 0.519
  additional property: Energy
    type: PropertyValue
    value: 0.515
  additional property: Speechiness
    type: PropertyValue
    value: 0.233
  additional property: Acousticness
    type: PropertyValue
    value: 0.538
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.08
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.81
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.055
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rije Rije Rije In Een Wagentje
type: MusicRecording
duration: PT4M10S
duration ms: 250533
explicit: false
by artist: Bassie & Adriaan
in album: 60 Liedjes Uit Grootmoeders Tijd - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600042
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T04:40:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb4ec1c806915f0c4eb541da3df6796ef00a5fa32d6614508005d7689027d12fa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958667
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600042
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T05:04:54Z
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 0xb4ec1c806915f0c4eb541da3df6796ef00a5fa32d6614508005d7689027d12fa. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/NLK071600042.
  date published: 2026-07-19T05:04:54Z
audio: Rije Rije Rije In Een Wagentje
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.995
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.551
  additional property: Energy
    type: PropertyValue
    value: 0.594
  additional property: Speechiness
    type: PropertyValue
    value: 0.13
  additional property: Acousticness
    type: PropertyValue
    value: 0.322
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.164
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.739
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.093
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

De Leukste Liedjes - Deel 1
type: MusicAlbum
date published: 2016-07-18
track: Acrobatenlied
  type: MusicRecording
  duration: PT2M3S
  duration ms: 123431
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Leukste Liedjes - Deel 1
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
  isrc code: NLK071600070
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T04:25:44+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x44b97efb8cf42c024a981474135d86bb92a7b7b4fd9b061f9672ac46076a5b84
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958242
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958242
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600070
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T07:28:32Z
  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 0x44b97efb8cf42c024a981474135d86bb92a7b7b4fd9b061f9672ac46076a5b84. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:32Z), 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/NLK071600070.
    date published: 2026-07-16T07:28:32Z
  audio: Acrobatenlied
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 165.253
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.663
    additional property: Energy
      type: PropertyValue
      value: 0.503
    additional property: Speechiness
      type: PropertyValue
      value: 0.172
    additional property: Acousticness
      type: PropertyValue
      value: 0.465
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.309
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.904
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.063
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: De Prins En De Kikker
  type: MusicRecording
  duration: PT3M30S
  duration ms: 210759
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Leukste Liedjes - Deel 1
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
  isrc code: NLK071600071
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T08:30:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf46fa239d4deaa4c91aaa01cd6a0f140baf99d92de1b602ec37149c328e53483
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956634
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956634
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600071
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T10:04:33Z
  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 0xf46fa239d4deaa4c91aaa01cd6a0f140baf99d92de1b602ec37149c328e53483. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLK071600071.
    date published: 2026-07-04T10:04:33Z
  audio: De Prins En De Kikker
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 93.987
    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: 0.829
    additional property: Energy
      type: PropertyValue
      value: 0.411
    additional property: Speechiness
      type: PropertyValue
      value: 0.069
    additional property: Acousticness
      type: PropertyValue
      value: 0.228
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.135
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.829
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.562
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Neef’s Dierentuin
  type: MusicRecording
  duration: PT3M0S
  duration ms: 180932
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Leukste Liedjes - Deel 1
    type: MusicAlbum
    date published: 2016-07-18
  genre: children's music
  isrc code: NLK071600074
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-11T15:31:04+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xaa90841e44aecbb6572eed0cbc3823a9cc1e818a2c537158a38186fc5076d912
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957583
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957583
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Neef’s Dierentuin
track: Ezel-Ballade
track: A.B.C.
track: Naar Bed

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600074

OTSTimestamp
type: PropertyValue
value: 2026-07-11T15:53:17Z

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 0xaa90841e44aecbb6572eed0cbc3823a9cc1e818a2c537158a38186fc5076d912. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/NLK071600074.
date published: 2026-07-11T15:53:17Z

Neef’s Dierentuin
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 100.07
additional property: Musical Key
  type: PropertyValue
  value: 6
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.818
additional property: Energy
  type: PropertyValue
  value: 0.635
additional property: Speechiness
  type: PropertyValue
  value: 0.107
additional property: Acousticness
  type: PropertyValue
  value: 0.384
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.207
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.939
additional property: Loudness (dB)
  type: PropertyValue
  value: -12.385
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
  value: Major

Ezel-Ballade
type: MusicRecording
duration: PT3M18S
duration ms: 198004
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600076
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T05:01:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x695b5cc14e54ff8d3c7a40714649a8bb6ce53a6bc2bf44da0a9089af3dadfc32
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958668
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958668
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600076
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T05:16:11Z
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 0x695b5cc14e54ff8d3c7a40714649a8bb6ce53a6bc2bf44da0a9089af3dadfc32. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/NLK071600076.
  date published: 2026-07-19T05:16:11Z
audio: Ezel-Ballade
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 90.904
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.776
  additional property: Energy
    type: PropertyValue
    value: 0.401
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.665
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.173
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.935
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.398
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

A.B.C.
type: MusicRecording
duration: PT1M51S
duration ms: 111401
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600077
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-14T19:21:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8b95da606ff036ffdeae24e7ad715dfd570bbe26e3f543d0234447c6fe304fde
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958054
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958054
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600077
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-14T19:33:24Z
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 0x8b95da606ff036ffdeae24e7ad715dfd570bbe26e3f543d0234447c6fe304fde. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/NLK071600077.
  date published: 2026-07-14T19:33:24Z
audio: A.B.C.
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 78.845
  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: 0.819
  additional property: Energy
    type: PropertyValue
    value: 0.526
  additional property: Speechiness
    type: PropertyValue
    value: 0.062
  additional property: Acousticness
    type: PropertyValue
    value: 0.27
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.068
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.926
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.671
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Naar Bed
type: MusicRecording
duration: PT2M0S
duration ms: 120635
explicit: false
by artist: Bassie & Adriaan
in album: De Leukste Liedjes - Deel 1
  type: MusicAlbum
  date published: 2016-07-18
genre: children's music
isrc code: NLK071600078
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T17:01:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4cdb4bd4ce593f7d3c28ef7d4fcc3da8c6de144f9b408b8c7afffb2d6870474f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958447
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958447
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600078
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T19:47:19Z
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 0x4cdb4bd4ce593f7d3c28ef7d4fcc3da8c6de144f9b408b8c7afffb2d6870474f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NLK071600078.
  date published: 2026-07-17T19:47:19Z
audio: Naar Bed
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.829
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.709
  additional property: Energy
    type: PropertyValue
    value: 0.393
  additional property: Speechiness
    type: PropertyValue
    value: 0.13
  additional property: Acousticness
    type: PropertyValue
    value: 0.168
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.048
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.783
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.218
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

De Leukste Liedjes - Deel 2
type: MusicAlbum
date published: 2016-07-18

Alle Sinterklaasliedjes
type: MusicAlbum
date published: 2016-08-09

Alle Sinterklaasliedjes
type: MusicAlbum
date published: 2016-08-09

Op Reis Door Europa
type: MusicAlbum
date published: 2016-08-17
track: Duitse Les
  type: MusicRecording
  duration: PT3M31S
  duration ms: 211450
  explicit: false
  by artist: Bassie & Adriaan
  in album: Op Reis Door Europa
    type: MusicAlbum
    date published: 2016-08-17
  genre: children's music
  isrc code: NLK071600154
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T18:06:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x70dbe2faee81a8c0e26e2363ab154bf1a03894a014266f228aefb47c07090a7a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958185
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958185
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600154
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T18:19:04Z
  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 0x70dbe2faee81a8c0e26e2363ab154bf1a03894a014266f228aefb47c07090a7a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/NLK071600154.
    date published: 2026-07-15T18:19:04Z
  audio: Duitse Les
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 120.17
    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: 0.726
    additional property: Energy
      type: PropertyValue
      value: 0.569
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.326
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.616
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.974
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.731
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: De Fairries
  type: MusicRecording
  duration: PT5M19S
  duration ms: 319787
  explicit: false
  by artist: Bassie & Adriaan
  in album: Op Reis Door Europa
    type: MusicAlbum
    date published: 2016-08-17
  genre: children's music
  isrc code: NLK071600156
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-02T21:43:11+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb1ba5f4ae6236f0d0690228e16640df08c90304ea1e4428600db066e2f6e0404
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956422
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956422
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600156
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T01:01:38Z
  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 0xb1ba5f4ae6236f0d0690228e16640df08c90304ea1e4428600db066e2f6e0404. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLK071600156.
    date published: 2026-07-03T01:01:38Z
  audio: De Fairries
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 171.977
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.422
    additional property: Energy
      type: PropertyValue
      value: 0.712
    additional property: Speechiness
      type: PropertyValue
      value: 0.063
    additional property: Acousticness
      type: PropertyValue
      value: 0.516
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.302
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.718
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.57
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Engelse Les
  type: MusicRecording
  duration: PT3M11S
  duration ms: 191518
  explicit: false
  by artist: Bassie & Adriaan
  in album: Op Reis Door Europa
    type: MusicAlbum
    date published: 2016-08-17
  genre: children's music
  isrc code: NLK071600166
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T06:20:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x183ef76ac26a68a89708b7d845450e4e2682294c58ad04b2c9db9f5d55218871
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958383
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958383
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Engelse Les

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071600166

OTSTimestamp
type: PropertyValue
value: 2026-07-17T08:20:01Z

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
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date published: 2026-07-17T08:20:01Z

Engelse Les
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Op Reis Door Europa
type: MusicAlbum
date published: 2016-08-17

De Reis Vol Verrassingen
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date published: 2016-08-17
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-16T16:14:30Z
  audio: Jimmy
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track: Portugese Les
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  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
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    date published: 2026-07-16T01:20:42Z
  audio: Portugese Les
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De Reis Vol Verrassingen
type: MusicAlbum
date published: 2016-08-17

Sinterklaas Op Bezoek Bij Bassie & Adriaan
type: MusicAlbum
date published: 2018-11-08

Sinterklaas Op Bezoek Bij
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date published: 2018-11-08

Liedjes van TV Deel 1
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date published: 2019-05-17

Liedjes van TV Deel 2
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date published: 2019-05-17

Liedjes van TV Deel 1
type: MusicAlbum
date published: 2019-05-18

Liedjes van TV Deel 2
type: MusicAlbum
date published: 2019-05-18

Liedjes van TV Deel 3
type: MusicAlbum
date published: 2019-05-31

Liedjes van TV Deel 3
type: MusicAlbum
date published: 2019-05-31

Liedjes van TV Deel 3
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date published: 2019-05-31
track: Titelliedje Bassie & Adriaan (intro)
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T21:18:05Z
  audio: Titelliedje Bassie & Adriaan (intro)
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track: In het circus
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T21:18:05Z
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track: Zeg stel je nou voor
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  subject of: OpenTimestamps Proof of Existence
  audio: Zeg stel je nou voor
track: Rustig, rustig, rustig
track: We reizen met het hele circus
track: Ga naar het bos of het strand
track: In ons circus
track: Hoera, het circus is er weer
track: De muis en olifant

OTSVerificationAPI
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OTSTimestamp
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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 0x6a1616f8f37732b3f1b31d6f3c854f5f5f4c9be478144fb2e1421f75e6b868ea. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLK071900055.
date published: 2026-07-05T01:43:49Z

Zeg stel je nou voor
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additional property: Speechiness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Mode Name
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Rustig, rustig, rustig
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T21:01:51Z
audio: Rustig, rustig, rustig
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We reizen met het hele circus
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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 0xfcb9247e94e70beb24d233876bbe8501eccd347091f132ecc620b99ed555b6ff. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLK071900059.
  date published: 2026-07-19T07:14:39Z
audio: We reizen met het hele circus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.07
  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: 0.838
  additional property: Energy
    type: PropertyValue
    value: 0.679
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.658
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.466
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.917
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.068
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ga naar het bos of het strand
type: MusicRecording
duration: PT3M1S
duration ms: 181219
explicit: false
by artist: Bassie & Adriaan
in album: Liedjes van TV Deel 3
  type: MusicAlbum
  date published: 2019-05-31
genre: children's music
isrc code: NLK071900062
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T22:02:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90b6dcd7bd1377c1ed4b9e6bf42f3b5a8e050cc099289dd100fb16e003125a6f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956634
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956634
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900062
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T10:04:33Z
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 0x90b6dcd7bd1377c1ed4b9e6bf42f3b5a8e050cc099289dd100fb16e003125a6f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLK071900062.
  date published: 2026-07-04T10:04:33Z
audio: Ga naar het bos of het strand
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.201
  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: 0.795
  additional property: Energy
    type: PropertyValue
    value: 0.497
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.749
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.278
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.964
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.964
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

In ons circus
type: MusicRecording
duration: PT2M46S
duration ms: 166396
explicit: false
by artist: Bassie & Adriaan
in album: Liedjes van TV Deel 3
  type: MusicAlbum
  date published: 2019-05-31
genre: children's music
isrc code: NLK071900064
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T20:08:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x10ae51596ee91be80749d98d543093f49cb65504a63a6c2d6577502a5a97e140
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956856
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956856
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900064
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
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 0x10ae51596ee91be80749d98d543093f49cb65504a63a6c2d6577502a5a97e140. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLK071900064.
  date published: 2026-07-06T01:25:57Z
audio: In ons circus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.46
  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: 0.9
  additional property: Energy
    type: PropertyValue
    value: 0.571
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.526
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.354
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.98
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.781
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Hoera, het circus is er weer
type: MusicRecording
duration: PT1M56S
duration ms: 116510
explicit: false
by artist: Bassie & Adriaan
in album: Liedjes van TV Deel 3
  type: MusicAlbum
  date published: 2019-05-31
genre: children's music
isrc code: NLK071900066
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T20:07:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc2de8f7fb94181d853474817ccc04c62b4fa0f9adcbfdc1140cff33a0770ee90
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956856
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956856
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900066
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
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 0xc2de8f7fb94181d853474817ccc04c62b4fa0f9adcbfdc1140cff33a0770ee90. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLK071900066.
  date published: 2026-07-06T01:25:57Z
audio: Hoera, het circus is er weer
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.892
  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: 0.824
  additional property: Energy
    type: PropertyValue
    value: 0.507
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.353
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.279
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.969
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.004
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

De muis en olifant
type: MusicRecording
duration: PT2M8S
duration ms: 128692
explicit: false
by artist: Bassie & Adriaan
in album: Liedjes van TV Deel 3
  type: MusicAlbum
  date published: 2019-05-31
genre: children's music
isrc code: NLK071900069
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T05:21:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b12262e2d513816ef1efd24dec63e44a82bb5da08304b0019bff56b2f74bf27
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958670
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958670
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900069
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T05:26:23Z
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 0x9b12262e2d513816ef1efd24dec63e44a82bb5da08304b0019bff56b2f74bf27. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/NLK071900069.
  date published: 2026-07-19T05:26:23Z
audio: De muis en olifant
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.038
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.906
  additional property: Energy
    type: PropertyValue
    value: 0.428
  additional property: Speechiness
    type: PropertyValue
    value: 0.133
  additional property: Acousticness
    type: PropertyValue
    value: 0.515
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.878
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.226
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Liedjes van TV Deel 4
type: MusicAlbum
date published: 2019-06-07
track: Gefeliciteerd
  type: MusicRecording
  duration: PT2M18S
  duration ms: 138840
  explicit: false
  by artist: Bassie & Adriaan
  in album: Liedjes van TV Deel 4
    type: MusicAlbum
    date published: 2019-06-07
  genre: children's music
  isrc code: NLK071900075
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T09:54:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa1d03e31d7e9dbe85db383a8f3f299195d717c29107637a423f8d980266d0aea
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900075
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0xa1d03e31d7e9dbe85db383a8f3f299195d717c29107637a423f8d980266d0aea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLK071900075.
    date published: 2026-07-03T19:59:51Z
  audio: Gefeliciteerd
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.205
    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: 0.765
    additional property: Energy
      type: PropertyValue
      value: 0.547
    additional property: Speechiness
      type: PropertyValue
      value: 0.081
    additional property: Acousticness
      type: PropertyValue
      value: 0.324
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.112
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.823
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.301
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Uno, dos, tres
  type: MusicRecording
  duration: PT2M8S
  duration ms: 128014
  explicit: false
  by artist: Bassie & Adriaan
  in album: Liedjes van TV Deel 4
    type: MusicAlbum
    date published: 2019-06-07
  genre: children's music
  isrc code: NLK071900077
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T21:26:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdeaa89774fc79b9de2e3e8e9780aeed8e0f670beadd7f285eccb3ff73c9a2740
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956857
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956857
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900077
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:26:17Z
  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 0xdeaa89774fc79b9de2e3e8e9780aeed8e0f670beadd7f285eccb3ff73c9a2740. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLK071900077.
    date published: 2026-07-06T01:26:17Z
  audio: Uno, dos, tres
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 88.049
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.729
    additional property: Energy
      type: PropertyValue
      value: 0.637
    additional property: Speechiness
      type: PropertyValue
      value: 0.143
    additional property: Acousticness
      type: PropertyValue
      value: 0.424
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.189
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.93
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.844
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Vier Seizoenen
  type: MusicRecording
  duration: PT3M13S
  duration ms: 193634
  explicit: false
  by artist: Bassie & Adriaan
  in album: Liedjes van TV Deel 4
    type: MusicAlbum
    date published: 2019-06-07
  genre: children's music
  isrc code: NLK071900083
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-14T19:23:52+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8ed6c3b98f2d4b99cfa218bb5759c972fffb4a54a7f2c140cb232e79a95de5a0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958054
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958054
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Vier Seizoenen
track: Griekse Les
track: Toen ging de wekker

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900083

OTSTimestamp
type: PropertyValue
value: 2026-07-14T19:33:24Z

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 0x8ed6c3b98f2d4b99cfa218bb5759c972fffb4a54a7f2c140cb232e79a95de5a0. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/NLK071900083.
date published: 2026-07-14T19:33:24Z

Vier Seizoenen
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 134.228
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: 0.789
additional property: Energy
  type: PropertyValue
  value: 0.416
additional property: Speechiness
  type: PropertyValue
  value: 0.135
additional property: Acousticness
  type: PropertyValue
  value: 0.456
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.135
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.898
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.442
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Minor

Griekse Les
type: MusicRecording
duration: PT3M4S
duration ms: 184691
explicit: false
by artist: Bassie & Adriaan
in album: Liedjes van TV Deel 4
  type: MusicAlbum
  date published: 2019-06-07
genre: children's music
isrc code: NLK071900091
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-11T17:19:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7df9e691a3447fe5b6256c0fdcbaed0685dd684453dba258321c79bf40b3afe9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957596
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957596
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900091
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-11T18:43:56Z
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 0x7df9e691a3447fe5b6256c0fdcbaed0685dd684453dba258321c79bf40b3afe9. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/NLK071900091.
  date published: 2026-07-11T18:43:56Z
audio: Griekse Les
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.076
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.458
  additional property: Energy
    type: PropertyValue
    value: 0.434
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.621
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.207
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.812
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.709
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Toen ging de wekker
type: MusicRecording
duration: PT3M52S
duration ms: 232953
explicit: false
by artist: Bassie & Adriaan
in album: Liedjes van TV Deel 4
  type: MusicAlbum
  date published: 2019-06-07
genre: children's music
isrc code: NLK071900092
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T05:09:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3f33e3046b4b5846bdf5c5b4e611e63dc562224c1a6a39eb3e9181cc0f1e2cf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956484
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956484
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900092
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T10:47:44Z
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 0xc3f33e3046b4b5846bdf5c5b4e611e63dc562224c1a6a39eb3e9181cc0f1e2cf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLK071900092.
  date published: 2026-07-03T10:47:44Z
audio: Toen ging de wekker
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.535
  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: 0.73
  additional property: Energy
    type: PropertyValue
    value: 0.445
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.643
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.266
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.822
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.446
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Liedjes van TV Deel 5
type: MusicAlbum
date published: 2019-06-14
track: Franse les
  type: MusicRecording
  duration: PT2M34S
  duration ms: 154113
  explicit: false
  by artist: Bassie & Adriaan
  in album: Liedjes van TV Deel 5
    type: MusicAlbum
    date published: 2019-06-14
  genre: children's music
  isrc code: NLK071900100
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-11T15:27:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x25e776ec7521aa2cfee813d8bd355020941d9c3e335c9b654b22a2ef5f47f38a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957583
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957583
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900100
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-11T15:53:17Z
  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 0x25e776ec7521aa2cfee813d8bd355020941d9c3e335c9b654b22a2ef5f47f38a. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/NLK071900100.
    date published: 2026-07-11T15:53:17Z
  audio: Franse les
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 170.226
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.437
    additional property: Energy
      type: PropertyValue
      value: 0.47
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.56
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.319
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.921
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.517
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Spaanse les
  type: MusicRecording
  duration: PT3M31S
  duration ms: 211754
  explicit: false
  by artist: Bassie & Adriaan
  in album: Liedjes van TV Deel 5
    type: MusicAlbum
    date published: 2019-06-14
  genre: children's music
  isrc code: NLK071900109
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T17:34:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2343d6914fcf6f086c6b0de0d012acc903fdabcd60994628a0937ad41ddef143
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956826
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900109
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T19:27:56Z
  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 0x2343d6914fcf6f086c6b0de0d012acc903fdabcd60994628a0937ad41ddef143. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLK071900109.
    date published: 2026-07-05T19:27:56Z
  audio: Spaanse les
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 120.147
    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: 0.643
    additional property: Energy
      type: PropertyValue
      value: 0.256
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.643
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.143
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.435
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.096
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Wij zijn nietig
  type: MusicRecording
  duration: PT1M45S
  duration ms: 105010
  explicit: false
  by artist: Bassie & Adriaan
  in album: Liedjes van TV Deel 5
    type: MusicAlbum
    date published: 2019-06-14
  genre: children's music
  isrc code: NLK071900112
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T17:33:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdb23a236e2a527a0bbe58f7730d49fd586cf3615f3f568ec289ab70181f23ae7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958765
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958765
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Wij zijn nietig
track: Truckerslied (on the highway)

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900112

OTSTimestamp
type: PropertyValue
value: 2026-07-19T20:35:37Z

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 0xdb23a236e2a527a0bbe58f7730d49fd586cf3615f3f568ec289ab70181f23ae7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:35:37Z), 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/NLK071900112.
date published: 2026-07-19T20:35:37Z

Wij zijn nietig
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 95.061
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: 0.894
additional property: Energy
  type: PropertyValue
  value: 0.579
additional property: Speechiness
  type: PropertyValue
  value: 0.038
additional property: Acousticness
  type: PropertyValue
  value: 0.324
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.039
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.965
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.275
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

Truckerslied (on the highway)
type: MusicRecording
duration: PT4M34S
duration ms: 274252
explicit: false
by artist: Bassie & Adriaan
in album: Liedjes van TV Deel 5
  type: MusicAlbum
  date published: 2019-06-14
genre: children's music
isrc code: NLK071900113
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-14T19:57:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ea3e0ef919fc4e3683b9c0d437dda8f2693690462709a4c9c1dbc53dc31ec66
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958058
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958058
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK071900113
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-14T20:20:34Z
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 0x4ea3e0ef919fc4e3683b9c0d437dda8f2693690462709a4c9c1dbc53dc31ec66. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NLK071900113.
  date published: 2026-07-14T20:20:34Z
audio: Truckerslied (on the highway)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 89.928
  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: 0.561
  additional property: Energy
    type: PropertyValue
    value: 0.599
  additional property: Speechiness
    type: PropertyValue
    value: 0.027
  additional property: Acousticness
    type: PropertyValue
    value: 0.104
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.729
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.752
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.263
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Karaoke Feest
type: MusicAlbum
date published: 2019-08-02

De Verdwenen Schat (Hoorspel)
type: MusicAlbum
date published: 2021-01-21
track: Een leuke brief
  type: MusicRecording
  duration: PT4M28S
  duration ms: 268495
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Verdwenen Schat (Hoorspel)
    type: MusicAlbum
    date published: 2021-01-21
  genre: children's music
  isrc code: NLK072000150
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T05:28:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5fc732d4332f3944f84e36ef3fdda563ec4df348e5cbae197847c13d3d1a890f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958690
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958690
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000150
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T07:14:39Z
  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 0x5fc732d4332f3944f84e36ef3fdda563ec4df348e5cbae197847c13d3d1a890f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLK072000150.
    date published: 2026-07-19T07:14:39Z
  audio: Een leuke brief
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 120.337
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.666
    additional property: Energy
      type: PropertyValue
      value: 0.388
    additional property: Speechiness
      type: PropertyValue
      value: 0.848
    additional property: Acousticness
      type: PropertyValue
      value: 0.801
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.458
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.555
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.476
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: De alarminstallatie
  type: MusicRecording
  duration: PT5M48S
  duration ms: 348677
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Verdwenen Schat (Hoorspel)
    type: MusicAlbum
    date published: 2021-01-21
  genre: children's music
  isrc code: NLK072000152
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T17:08:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7e9f213e775c190f27ef27c4111eccadae2214eb96300f90962a29744c03d03f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958765
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958765
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000152
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T20:08:35Z
  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 0x7e9f213e775c190f27ef27c4111eccadae2214eb96300f90962a29744c03d03f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:08:35Z), 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/NLK072000152.
    date published: 2026-07-19T20:08:35Z
  audio: De alarminstallatie
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 117.79
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.719
    additional property: Energy
      type: PropertyValue
      value: 0.317
    additional property: Speechiness
      type: PropertyValue
      value: 0.914
    additional property: Acousticness
      type: PropertyValue
      value: 0.769
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.082
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.563
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.645
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: De voorbereiding
  type: MusicRecording
  duration: PT4M46S
  duration ms: 286781
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Verdwenen Schat (Hoorspel)
    type: MusicAlbum
    date published: 2021-01-21
  genre: children's music
  isrc code: NLK072000153
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T06:06:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x49544947679fbc6bb90d6d1c59bf0b4e2f057ae1a9618a50c6d18b129842b794
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958686
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958686
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: De voorbereiding
track: Het telefoongesprek

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000153

OTSTimestamp
type: PropertyValue
value: 2026-07-19T06:43:29Z

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 0x49544947679fbc6bb90d6d1c59bf0b4e2f057ae1a9618a50c6d18b129842b794. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/NLK072000153.
date published: 2026-07-19T06:43:29Z

De voorbereiding
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 135.402
additional property: Musical Key
  type: PropertyValue
  value: 3
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.633
additional property: Energy
  type: PropertyValue
  value: 0.372
additional property: Speechiness
  type: PropertyValue
  value: 0.941
additional property: Acousticness
  type: PropertyValue
  value: 0.891
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.109
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.396
additional property: Loudness (dB)
  type: PropertyValue
  value: -20.118
additional property: Key Name
  type: PropertyValue
  value: Eb
additional property: Mode Name
  type: PropertyValue
  value: Major

Het telefoongesprek
type: MusicRecording
duration: PT6M6S
duration ms: 366216
explicit: false
by artist: Bassie & Adriaan
in album: De Verdwenen Schat (Hoorspel)
  type: MusicAlbum
  date published: 2021-01-21
genre: children's music
isrc code: NLK072000156
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T22:07:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc64b11b52f734c4863d9525a6fbbb6e2c66bac9139e6ff5a6adfcfaf55c94a95
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956856
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956856
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000156
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
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 0xc64b11b52f734c4863d9525a6fbbb6e2c66bac9139e6ff5a6adfcfaf55c94a95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLK072000156.
  date published: 2026-07-06T01:25:57Z
audio: Het telefoongesprek
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 83.704
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.642
  additional property: Energy
    type: PropertyValue
    value: 0.387
  additional property: Speechiness
    type: PropertyValue
    value: 0.956
  additional property: Acousticness
    type: PropertyValue
    value: 0.765
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.345
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.641
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Op Schattenjacht (Hoorspel)
type: MusicAlbum
date published: 2021-01-21

De Verzonken Stad
type: MusicAlbum
date published: 2021-03-19
track: Een geheimzinnige steen
  type: MusicRecording
  duration: PT4M46S
  duration ms: 286500
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Verzonken Stad
    type: MusicAlbum
    date published: 2021-03-19
  genre: children's music
  isrc code: NLK072000247
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T04:08:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6096fae83350b2b8075fe8f88ee1d625e791d02d1e4ea6b7f6737a754f9a4f5a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958660
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958660
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000247
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T04:21:53Z
  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 0x6096fae83350b2b8075fe8f88ee1d625e791d02d1e4ea6b7f6737a754f9a4f5a. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/NLK072000247.
    date published: 2026-07-19T04:21:53Z
  audio: Een geheimzinnige steen
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 65.195
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.598
    additional property: Energy
      type: PropertyValue
      value: 0.361
    additional property: Speechiness
      type: PropertyValue
      value: 0.932
    additional property: Acousticness
      type: PropertyValue
      value: 0.448
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.376
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.488
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.173
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Het Eiland Santorini
  type: MusicRecording
  duration: PT4M54S
  duration ms: 294136
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Verzonken Stad
    type: MusicAlbum
    date published: 2021-03-19
  genre: children's music
  isrc code: NLK072000251
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T20:06:01+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xabb11f4ed81193fb7bf4a1abb0032a1c537f3b3811ea59b1646122c7225ce71f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956857
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956857
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000251
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:26:17Z
  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 0xabb11f4ed81193fb7bf4a1abb0032a1c537f3b3811ea59b1646122c7225ce71f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLK072000251.
    date published: 2026-07-06T01:26:17Z
  audio: Het Eiland Santorini
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.205
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.646
    additional property: Energy
      type: PropertyValue
      value: 0.212
    additional property: Speechiness
      type: PropertyValue
      value: 0.759
    additional property: Acousticness
      type: PropertyValue
      value: 0.55
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.294
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.616
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.337
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Een list met poppen
  type: MusicRecording
  duration: PT4M19S
  duration ms: 259566
  explicit: false
  by artist: Bassie & Adriaan
  in album: De Verzonken Stad
    type: MusicAlbum
    date published: 2021-03-19
  genre: children's music
  isrc code: NLK072000252
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T14:57:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xeadd8c9ab4195a78fa7e52a6a1400f81046767406527bb08c2dfca2c657cb407
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956822
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956822
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Een list met poppen
track: De Baron Is Zenuwachtig
track: Het plan van Adriaan
track: Dag Vriendjes

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000252

OTSTimestamp
type: PropertyValue
value: 2026-07-05T18:48:28Z

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 0xeadd8c9ab4195a78fa7e52a6a1400f81046767406527bb08c2dfca2c657cb407. 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/NLK072000252.
date published: 2026-07-05T18:48:28Z

Een list met poppen
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 113.244
additional property: Musical Key
  type: PropertyValue
  value: 6
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.709
additional property: Energy
  type: PropertyValue
  value: 0.16
additional property: Speechiness
  type: PropertyValue
  value: 0.854
additional property: Acousticness
  type: PropertyValue
  value: 0.525
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.386
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.386
additional property: Loudness (dB)
  type: PropertyValue
  value: -21.471
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
  value: Major

De Baron Is Zenuwachtig
type: MusicRecording
duration: PT4M15S
duration ms: 255630
explicit: false
by artist: Bassie & Adriaan
in album: De Verzonken Stad
  type: MusicAlbum
  date published: 2021-03-19
genre: children's music
isrc code: NLK072000254
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T21:21:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa99caab2790db1b4c4f84ece6290c2b59e91dd4640462833d107c53005a931ce
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956856
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956856
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000254
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
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 0xa99caab2790db1b4c4f84ece6290c2b59e91dd4640462833d107c53005a931ce. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLK072000254.
  date published: 2026-07-06T01:25:57Z
audio: De Baron Is Zenuwachtig
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 76.265
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 1
  additional property: Danceability
    type: PropertyValue
    value: 0.544
  additional property: Energy
    type: PropertyValue
    value: 0.183
  additional property: Speechiness
    type: PropertyValue
    value: 0.931
  additional property: Acousticness
    type: PropertyValue
    value: 0.343
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.384
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.379
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.413
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Het plan van Adriaan
type: MusicRecording
duration: PT4M44S
duration ms: 284031
explicit: false
by artist: Bassie & Adriaan
in album: De Verzonken Stad
  type: MusicAlbum
  date published: 2021-03-19
genre: children's music
isrc code: NLK072000255
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T21:38:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeedbd64b62fe455c41e691fceda56130f89cb9e2ab450299d2f4f7ca0a094963
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956857
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956857
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000255
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:26:17Z
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 0xeedbd64b62fe455c41e691fceda56130f89cb9e2ab450299d2f4f7ca0a094963. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLK072000255.
  date published: 2026-07-06T01:26:17Z
audio: Het plan van Adriaan
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.56
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.698
  additional property: Energy
    type: PropertyValue
    value: 0.258
  additional property: Speechiness
    type: PropertyValue
    value: 0.893
  additional property: Acousticness
    type: PropertyValue
    value: 0.46
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.683
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.555
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.879
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Dag Vriendjes
type: MusicRecording
duration: PT0M38S
duration ms: 38849
explicit: false
by artist: Bassie & Adriaan
in album: De Verzonken Stad
  type: MusicAlbum
  date published: 2021-03-19
genre: children's music
isrc code: NLK072000257
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T17:21:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x879ea2927fc3a583bdce9e10c0d26621b51c2468fd789ebc4ee1574c5107aad8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958761
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958761
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000257
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T20:23:53Z
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 0x879ea2927fc3a583bdce9e10c0d26621b51c2468fd789ebc4ee1574c5107aad8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:23:53Z), 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/NLK072000257.
  date published: 2026-07-19T20:23:53Z
audio: Dag Vriendjes
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.976
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.873
  additional property: Energy
    type: PropertyValue
    value: 0.37
  additional property: Speechiness
    type: PropertyValue
    value: 0.465
  additional property: Acousticness
    type: PropertyValue
    value: 0.725
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.221
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.213
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Radiostation 2 Vanuit Griekenland
type: MusicAlbum
date published: 2021-04-02
track: Had ik nou maar nee ja gezegd
  type: MusicRecording
  duration: PT3M33S
  duration ms: 213241
  explicit: false
  by artist: Bassie & Adriaan
  in album: Radiostation 2 Vanuit Griekenland
    type: MusicAlbum
    date published: 2021-04-02
  genre: children's music
  isrc code: NLK072000231
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T09:52:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe03906ec38a07f29a5d1dce157e2bc83d96f5a0227365b2e1bb9bc877620fbd9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958444
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958444
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000231
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T19:12:23Z
  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 0xe03906ec38a07f29a5d1dce157e2bc83d96f5a0227365b2e1bb9bc877620fbd9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLK072000231.
    date published: 2026-07-17T19:12:23Z
  audio: Had ik nou maar nee ja gezegd
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.533
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.762
    additional property: Energy
      type: PropertyValue
      value: 0.577
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.738
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.352
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.83
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.689
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Een gewaarschuwd mens
  type: MusicRecording
  duration: PT1M59S
  duration ms: 119219
  explicit: false
  by artist: Bassie & Adriaan
  in album: Radiostation 2 Vanuit Griekenland
    type: MusicAlbum
    date published: 2021-04-02
  genre: children's music
  isrc code: NLK072000239
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T07:00:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x02e26cecf6ba3bbbc4dee4838fe9a6df9911287465a3aa37106eec7805636b3e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000239
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T08:19:09Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e26cecf6ba3bbbc4dee4838fe9a6df9911287465a3aa37106eec7805636b3e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/NLK072000239.
    date published: 2026-07-18T08:19:09Z
  audio: Een gewaarschuwd mens
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.573
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.787
    additional property: Energy
      type: PropertyValue
      value: 0.556
    additional property: Speechiness
      type: PropertyValue
      value: 0.144
    additional property: Acousticness
      type: PropertyValue
      value: 0.308
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.19
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.858
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.074
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: In Griekenland
  type: MusicRecording
  duration: PT2M48S
  duration ms: 168189
  explicit: false
  by artist: Bassie & Adriaan
  in album: Radiostation 2 Vanuit Griekenland
    type: MusicAlbum
    date published: 2021-04-02
  genre: children's music
  isrc code: NLK072000243
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T14:45:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x654889a0a0d6b62626ae363a4ad539a0492360e7230ce1a966c78c7eead41a9c
  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
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: In Griekenland

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000243

OTSTimestamp
type: PropertyValue
value: 2026-07-16T16:14:30Z

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 0x654889a0a0d6b62626ae363a4ad539a0492360e7230ce1a966c78c7eead41a9c. 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/NLK072000243.
date published: 2026-07-16T16:14:30Z

In Griekenland
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 141.124
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: 0.644
additional property: Energy
  type: PropertyValue
  value: 0.36
additional property: Speechiness
  type: PropertyValue
  value: 0.048
additional property: Acousticness
  type: PropertyValue
  value: 0.572
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.257
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.885
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.106
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Minor

Radiostation 1
type: MusicAlbum
date published: 2021-04-16
track: Kinderdisco-Medley
  type: MusicRecording
  duration: PT2M23S
  duration ms: 143909
  explicit: false
  by artist: Bassie & Adriaan
  in album: Radiostation 1
    type: MusicAlbum
    date published: 2021-04-16
  genre: children's music
  isrc code: NLK072000260
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T10:00:52+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x03e20b539ffd8682a7fbef3f669cb25114413ddee6a5455da86928f0d3540efb
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958543
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958543
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000260
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T11:58:44Z
  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 0x03e20b539ffd8682a7fbef3f669cb25114413ddee6a5455da86928f0d3540efb. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/NLK072000260.
    date published: 2026-07-18T11:58:44Z
  audio: Kinderdisco-Medley
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.358
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.648
    additional property: Energy
      type: PropertyValue
      value: 0.495
    additional property: Speechiness
      type: PropertyValue
      value: 0.211
    additional property: Acousticness
      type: PropertyValue
      value: 0.414
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.148
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.744
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.41
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Vier Seizoenen
  type: MusicRecording
  duration: PT3M13S
  duration ms: 193634
  explicit: false
  by artist: Bassie & Adriaan
  in album: Radiostation 1
    type: MusicAlbum
    date published: 2021-04-16
  genre: children's music
  isrc code: NLK072000262
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T04:28:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5bd4971f4cb9c8734ea2bcbb40a5e596ddeef65553d53e7dc81df1a493560174
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958242
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958242
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000262
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T07:30:48Z
  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 0x5bd4971f4cb9c8734ea2bcbb40a5e596ddeef65553d53e7dc81df1a493560174. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:48Z), 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/NLK072000262.
    date published: 2026-07-16T07:30:48Z
  audio: Vier Seizoenen
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 134.221
    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: 0.789
    additional property: Energy
      type: PropertyValue
      value: 0.417
    additional property: Speechiness
      type: PropertyValue
      value: 0.133
    additional property: Acousticness
      type: PropertyValue
      value: 0.459
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.135
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.899
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.442
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Spoken bestaan niet
  type: MusicRecording
  duration: PT2M28S
  duration ms: 148497
  explicit: false
  by artist: Bassie & Adriaan
  in album: Radiostation 1
    type: MusicAlbum
    date published: 2021-04-16
  genre: children's music
  isrc code: NLK072000264
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-14T19:47:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x04bd4059dc47acccedb0c457bd5f27e840fe1ed152995d5c858624c34ff89357
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958060
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958060
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Spoken bestaan niet
track: Dat is dom
track: Lachen, lachen, lachen
track: Het Orkest
track: Kom we gaan er tegen aan
track: Vriendelijk zijn
track: De Trainer
track: Abacadabra
track: Gefeliciteerd

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000264

OTSTimestamp
type: PropertyValue
value: 2026-07-14T20:39:42Z

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 0x04bd4059dc47acccedb0c457bd5f27e840fe1ed152995d5c858624c34ff89357. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NLK072000264.
date published: 2026-07-14T20:39:42Z

Spoken bestaan niet
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 99.067
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.877
additional property: Energy
  type: PropertyValue
  value: 0.43
additional property: Speechiness
  type: PropertyValue
  value: 0.072
additional property: Acousticness
  type: PropertyValue
  value: 0.451
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.098
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.882
additional property: Loudness (dB)
  type: PropertyValue
  value: -15.279
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Minor

Dat is dom
type: MusicRecording
duration: PT2M4S
duration ms: 124358
explicit: false
by artist: Bassie & Adriaan
in album: Radiostation 1
  type: MusicAlbum
  date published: 2021-04-16
genre: children's music
isrc code: NLK072000266
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T08:30:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2e1403cca077fc91af1b0b073e49f30a446a3a13d3f7dc5602d135521083aa69
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956656
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956656
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000266
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T14:03:39Z
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 0x2e1403cca077fc91af1b0b073e49f30a446a3a13d3f7dc5602d135521083aa69. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLK072000266.
  date published: 2026-07-04T14:03:39Z
audio: Dat is dom
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 144.756
  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
    type: PropertyValue
    value: 0.777
  additional property: Energy
    type: PropertyValue
    value: 0.437
  additional property: Speechiness
    type: PropertyValue
    value: 0.305
  additional property: Acousticness
    type: PropertyValue
    value: 0.732
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.083
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.903
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.294
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Lachen, lachen, lachen
type: MusicRecording
duration: PT2M53S
duration ms: 173079
explicit: false
by artist: Bassie & Adriaan
in album: Radiostation 1
  type: MusicAlbum
  date published: 2021-04-16
genre: children's music
isrc code: NLK072000268
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T16:41:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9aca0110d436816ed6895fff10fca5b1f1049ef3f029da5de3e5553481702dbe
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958444
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958444
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000268
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T19:12:23Z
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 0x9aca0110d436816ed6895fff10fca5b1f1049ef3f029da5de3e5553481702dbe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLK072000268.
  date published: 2026-07-17T19:12:23Z
audio: Lachen, lachen, lachen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.038
  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: 0.767
  additional property: Energy
    type: PropertyValue
    value: 0.635
  additional property: Speechiness
    type: PropertyValue
    value: 0.094
  additional property: Acousticness
    type: PropertyValue
    value: 0.303
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.88
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.65
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Het Orkest
type: MusicRecording
duration: PT3M17S
duration ms: 197100
explicit: false
by artist: Bassie & Adriaan
in album: Radiostation 1
  type: MusicAlbum
  date published: 2021-04-16
genre: children's music
isrc code: NLK072000270
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T14:57:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfcb7648f85c6d1008d74cb435b48e9b6c51a6d0a7b4efb5134d489cd9046bf26
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/NLK072000270
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 0xfcb7648f85c6d1008d74cb435b48e9b6c51a6d0a7b4efb5134d489cd9046bf26. 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/NLK072000270.
  date published: 2026-07-16T16:14:30Z
audio: Het Orkest
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.48
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.888
  additional property: Energy
    type: PropertyValue
    value: 0.363
  additional property: Speechiness
    type: PropertyValue
    value: 0.204
  additional property: Acousticness
    type: PropertyValue
    value: 0.253
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.033
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.772
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.244
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kom we gaan er tegen aan
type: MusicRecording
duration: PT2M36S
duration ms: 156876
explicit: false
by artist: Bassie & Adriaan
in album: Radiostation 1
  type: MusicAlbum
  date published: 2021-04-16
genre: children's music
isrc code: NLK072000272
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-11T14:26:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x772c50d33696bfd5cb87f0ac28c76472597c89cfcd66a085ad1d25fe39d76294
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957579
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957579
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000272
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-11T14:35:38Z
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 0x772c50d33696bfd5cb87f0ac28c76472597c89cfcd66a085ad1d25fe39d76294. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/NLK072000272.
  date published: 2026-07-11T14:35:38Z
audio: Kom we gaan er tegen aan
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 159.305
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.721
  additional property: Energy
    type: PropertyValue
    value: 0.573
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.252
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.13
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.961
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.701
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Vriendelijk zijn
type: MusicRecording
duration: PT3M34S
duration ms: 214298
explicit: false
by artist: Bassie & Adriaan
in album: Radiostation 1
  type: MusicAlbum
  date published: 2021-04-16
genre: children's music
isrc code: NLK072000274
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T09:33:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1696a9c903439e0a7dd8d61c9063be874c5abb8f20758c3b0909ed822aabcae0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958716
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958716
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000274
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T10:15:55Z
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 0x1696a9c903439e0a7dd8d61c9063be874c5abb8f20758c3b0909ed822aabcae0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NLK072000274.
  date published: 2026-07-19T10:15:55Z
audio: Vriendelijk zijn
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 175.305
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.621
  additional property: Energy
    type: PropertyValue
    value: 0.447
  additional property: Speechiness
    type: PropertyValue
    value: 0.07
  additional property: Acousticness
    type: PropertyValue
    value: 0.447
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.236
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.947
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.002
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

De Trainer
type: MusicRecording
duration: PT1M59S
duration ms: 119514
explicit: false
by artist: Bassie & Adriaan
in album: Radiostation 1
  type: MusicAlbum
  date published: 2021-04-16
genre: children's music
isrc code: NLK072000276
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-15T21:21:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9a30d6ed4720e24f57ec26d5910cf8184704abbba5a1262ffa7425b7030b26a7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958204
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958204
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000276
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T00:29:04Z
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 0x9a30d6ed4720e24f57ec26d5910cf8184704abbba5a1262ffa7425b7030b26a7. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:29:04Z), 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/NLK072000276.
  date published: 2026-07-16T00:29:04Z
audio: De Trainer
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 158.668
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.779
  additional property: Energy
    type: PropertyValue
    value: 0.698
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.316
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.244
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.962
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.3
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Abacadabra
type: MusicRecording
duration: PT2M37S
duration ms: 157286
explicit: false
by artist: Bassie & Adriaan
in album: Radiostation 1
  type: MusicAlbum
  date published: 2021-04-16
genre: children's music
isrc code: NLK072000278
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-15T06:57:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa808c8785f3658fa163f0831943f756bf2776ef2efaa7396d4ad1febf22528a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958116
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958116
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK072000278
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa808c8785f3658fa163f0831943f756bf2776ef2efaa7396d4ad1febf22528a9. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:01Z), 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/NLK072000278.
  date published: 2026-07-15T10:00:01Z
audio: Abacadabra
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Gefeliciteerd
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duration: PT2M42S
duration ms: 162431
explicit: false
by artist: Bassie & Adriaan
in album: Radiostation 1
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  date published: 2021-04-16
genre: children's music
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additional property: OTSVerifyInstructions
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  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
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  date published: 2026-07-02T21:01:51Z
audio: Gefeliciteerd
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Benidorm (Zomerse Versie)
type: MusicAlbum
date published: 2025-07-12

De Spaanse Zon (Zomerse Versie)
type: MusicAlbum
date published: 2025-07-12