Lemniscaat
type: MusicGroup
genre: children's music
description: Lemniscaat or Lemniscaat Publishers is a Dutch independent publishing house based in Rotterdam, Netherlands. The company publishes both children's literature and non-fiction books for adults. The comp
popularity: 30
followers: 1793
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x585e88f6da31eee6681d7ea054776256e886794bd6beba8316750fc4c6f319b1
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/1a7ea003-65c0-42f3-a562-eb88cede3705.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a7ea003-65c0-42f3-a562-eb88cede3705.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a7ea003-65c0-42f3-a562-eb88cede3705
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585e88f6da31eee6681d7ea054776256e886794bd6beba8316750fc4c6f319b1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a7ea003-65c0-42f3-a562-eb88cede3705.json and https://artists.proofprofile.net/proofs/artist/1a7ea003-65c0-42f3-a562-eb88cede3705.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
  track: Boer, Wat Zeg Je Van Mijn Kippen?
    type: MusicRecording
    duration: PT1M4S
    duration ms: 64200
    explicit: false
    by artist: Lemniscaat
    in album: Daar Buiten Loopt Een Schaap
      type: MusicAlbum
      date published: 2018-11-25
    genre: children's music
    isrc code: QZES81823008
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T13:26:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x99157123b075ba50c3ba2a3a46abc275d9f705957e139173665bf0bb6cee797f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958742
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958742
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823008
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T14:09:34Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99157123b075ba50c3ba2a3a46abc275d9f705957e139173665bf0bb6cee797f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZES81823008.
      date published: 2026-07-19T14:09:34Z
    audio: Boer, Wat Zeg Je Van Mijn Kippen?
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 180.338
      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: 0.395
      additional property: Energy
        type: PropertyValue
        value: 0.09
      additional property: Speechiness
        type: PropertyValue
        value: 0.074
      additional property: Acousticness
        type: PropertyValue
        value: 0.85
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.083
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.924
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.92
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Witte Zwanen, Zwarte Zwanen
    type: MusicRecording
    duration: PT1M33S
    duration ms: 93505
    explicit: false
    by artist: Lemniscaat
    in album: Daar Buiten Loopt Een Schaap
      type: MusicAlbum
      date published: 2018-11-25
    genre: children's music
    isrc code: QZES81823009
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T05:29:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc2de38c50011ce45b15fb4af6295807d79d2fa9862807ef0064f2d1ac20e9f5e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958371
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958371
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823009
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T05:45:43Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2de38c50011ce45b15fb4af6295807d79d2fa9862807ef0064f2d1ac20e9f5e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZES81823009.
      date published: 2026-07-17T05:45:43Z
    audio: Witte Zwanen, Zwarte Zwanen
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 109.129
      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: 0.687
      additional property: Energy
        type: PropertyValue
        value: 0.09
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.965
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.475
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Ozewiezewoze
  track: Klap Eens in Je Handjes
  track: Slaap, Kindje, Slaap
  track: Schuitje Varen, Theetje Drinken
  track: Poesje Mauw
  track: Alle Eendjes Zwemmen in Het Water
  track: Hoedje Van Papier
  track: Het Regent, Het Regent
  track: Rije, Rije, Rije
  track: Hop, Hop, Hop, Paardje in Galop
album: Op Een Grote Paddenstoel
album: Alles in de Wind
album: Joepie Joepie
album: Stille Nacht. Een Kerstspel in 12 Liedjes
album: Poesje Mauw
album: Sinterklaasliedjes
album: De Gruffalo in streektalen
album: Slaap Kindje Slaap
album: Away in a Manger
album: Rijen, rijen, rijen in een wagentje
album: Life Is but a Dream...
album: De twaalf kerstdagen
album: Vijf kleine kuikens

Loudness (dB)
type: PropertyValue
value: -16.602

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Ozewiezewoze
type: MusicRecording
duration: PT0M48S
duration ms: 48760
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823010
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T22:24:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x94687f0b9bf00f12d37c523f5670f18c8241034f9d0b4360f5c121f020bdf553
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958792
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958792
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823010
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T22:55:52Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94687f0b9bf00f12d37c523f5670f18c8241034f9d0b4360f5c121f020bdf553. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZES81823010.
  date published: 2026-07-19T22:55:52Z
audio: Ozewiezewoze
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.406
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.478
  additional property: Energy
    type: PropertyValue
    value: 0.185
  additional property: Speechiness
    type: PropertyValue
    value: 0.066
  additional property: Acousticness
    type: PropertyValue
    value: 0.793
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.753
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.033
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Klap Eens in Je Handjes
type: MusicRecording
duration: PT0M54S
duration ms: 54565
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823011
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T18:14:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2db0841e5c85fc0226865a0603cb30781090f22dd0fb285d0c66678e4e65f18b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958770
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958770
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823011
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T19:26:13Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db0841e5c85fc0226865a0603cb30781090f22dd0fb285d0c66678e4e65f18b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZES81823011.
  date published: 2026-07-19T19:26:13Z
audio: Klap Eens in Je Handjes
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.538
  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: 0.776
  additional property: Energy
    type: PropertyValue
    value: 0.133
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.908
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.753
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.133
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Slaap, Kindje, Slaap
type: MusicRecording
duration: PT1M1S
duration ms: 61763
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823012
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T06:26:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x88f09f118d065cccf56271caf520088085e88b33f9eb0fcdccc1613800aca090
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/QZES81823012
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f09f118d065cccf56271caf520088085e88b33f9eb0fcdccc1613800aca090. 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/QZES81823012.
  date published: 2026-07-04T10:04:33Z
audio: Slaap, Kindje, Slaap
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 180.408
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.465
  additional property: Energy
    type: PropertyValue
    value: 0.2
  additional property: Speechiness
    type: PropertyValue
    value: 0.081
  additional property: Acousticness
    type: PropertyValue
    value: 0.936
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.123
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.424
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.587
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Schuitje Varen, Theetje Drinken
type: MusicRecording
duration: PT1M2S
duration ms: 62529
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823013
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T13:51:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf61a7a4bd7138d5ea4734a2559b00fb85cd44b5fd129e0ac701bc31d23fe5fae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958742
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823013
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T14:09:34Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61a7a4bd7138d5ea4734a2559b00fb85cd44b5fd129e0ac701bc31d23fe5fae. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZES81823013.
  date published: 2026-07-19T14:09:34Z
audio: Schuitje Varen, Theetje Drinken
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 171.91
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.457
  additional property: Energy
    type: PropertyValue
    value: 0.103
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.909
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.745
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Poesje Mauw
type: MusicRecording
duration: PT0M48S
duration ms: 48760
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823014
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T14:40:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1a564171f97c42878db78487aba8e95bed274b71cd16cdef7a3d30df1f8ce5f2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958746
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958746
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823014
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T15:36:35Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a564171f97c42878db78487aba8e95bed274b71cd16cdef7a3d30df1f8ce5f2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZES81823014.
  date published: 2026-07-19T15:36:35Z
audio: Poesje Mauw
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.863
  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: 0.609
  additional property: Energy
    type: PropertyValue
    value: 0.105
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.908
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.023
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.688
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.293
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Alle Eendjes Zwemmen in Het Water
type: MusicRecording
duration: PT1M1S
duration ms: 61113
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823015
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-21T05:35:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8eec5146b9acc586737dfce4741bf518edfa8e1f77ae3d1ee61f17fa71469900
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958975
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958975
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823015
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T06:12:52Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec5146b9acc586737dfce4741bf518edfa8e1f77ae3d1ee61f17fa71469900. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZES81823015.
  date published: 2026-07-21T06:12:52Z
audio: Alle Eendjes Zwemmen in Het Water
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.532
  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: 0.602
  additional property: Energy
    type: PropertyValue
    value: 0.296
  additional property: Speechiness
    type: PropertyValue
    value: 0.136
  additional property: Acousticness
    type: PropertyValue
    value: 0.771
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.059
  additional property: Liveness
    type: PropertyValue
    value: 0.36
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.945
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.022
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Hoedje Van Papier
type: MusicRecording
duration: PT1M1S
duration ms: 61786
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823016
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T15:11:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd1c0901881ae8763a908d4ee6c5c8f0e135719f0e0be24c3ba47a92a93af0a0e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958746
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958746
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823016
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T15:36:35Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c0901881ae8763a908d4ee6c5c8f0e135719f0e0be24c3ba47a92a93af0a0e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZES81823016.
  date published: 2026-07-19T15:36:35Z
audio: Hoedje Van Papier
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 77.883
  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: 0.596
  additional property: Energy
    type: PropertyValue
    value: 0.204
  additional property: Speechiness
    type: PropertyValue
    value: 0.084
  additional property: Acousticness
    type: PropertyValue
    value: 0.804
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.124
  additional property: Liveness
    type: PropertyValue
    value: 0.227
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.504
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.77
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Het Regent, Het Regent
type: MusicRecording
duration: PT0M46S
duration ms: 46508
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823017
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-21T05:31:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98695b797b8d923a78c86bc46ad3f32732befe62ef59d6d6b316d5db4367c1d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958975
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958975
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823017
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T06:12:52Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98695b797b8d923a78c86bc46ad3f32732befe62ef59d6d6b316d5db4367c1d8. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZES81823017.
  date published: 2026-07-21T06:12:52Z
audio: Het Regent, Het Regent
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 194.448
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.558
  additional property: Energy
    type: PropertyValue
    value: 0.158
  additional property: Speechiness
    type: PropertyValue
    value: 0.077
  additional property: Acousticness
    type: PropertyValue
    value: 0.817
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.118
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.557
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.278
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rije, Rije, Rije
type: MusicRecording
duration: PT1M4S
duration ms: 64015
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823018
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T07:15:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04fc0ade3e25c11986104272b592d39e3680c6e0da98c300f7acada7d4737c42
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959107
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959107
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823018
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T07:19:23Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fc0ade3e25c11986104272b592d39e3680c6e0da98c300f7acada7d4737c42. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZES81823018.
  date published: 2026-07-22T07:19:23Z
audio: Rije, Rije, Rije
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 150.727
  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: 0.626
  additional property: Energy
    type: PropertyValue
    value: 0.196
  additional property: Speechiness
    type: PropertyValue
    value: 0.063
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.432
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.615
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Hop, Hop, Hop, Paardje in Galop
type: MusicRecording
duration: PT0M54S
duration ms: 54031
explicit: false
by artist: Lemniscaat
in album: Daar Buiten Loopt Een Schaap
  type: MusicAlbum
  date published: 2018-11-25
genre: children's music
isrc code: QZES81823019
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T13:06:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7b74b4d2c8b863f6038453a18ed6d310c01582bc0ec4d8f2c79f11290105fb33
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958420
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958420
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81823019
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T13:33:01Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b74b4d2c8b863f6038453a18ed6d310c01582bc0ec4d8f2c79f11290105fb33. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZES81823019.
  date published: 2026-07-17T13:33:01Z
audio: Hop, Hop, Hop, Paardje in Galop
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 177.026
  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: 0.797
  additional property: Energy
    type: PropertyValue
    value: 0.22
  additional property: Speechiness
    type: PropertyValue
    value: 0.196
  additional property: Acousticness
    type: PropertyValue
    value: 0.509
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.04
  additional property: Liveness
    type: PropertyValue
    value: 0.054
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.997
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.297
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Op Een Grote Paddenstoel
type: MusicAlbum
date published: 2019-03-16
track: Ik Zag Twee Beren
  type: MusicRecording
  duration: PT0M59S
  duration ms: 59209
  explicit: false
  by artist: Lemniscaat
  in album: Op Een Grote Paddenstoel
    type: MusicAlbum
    date published: 2019-03-16
  genre: children's music
  isrc code: QZDA41909285
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T00:13:43+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd1e039874d839b84be8c3924020f71647cd8dc5f58a73ea2abb75c9600608543
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958087
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958087
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909285
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T02:56:49Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e039874d839b84be8c3924020f71647cd8dc5f58a73ea2abb75c9600608543. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZDA41909285.
    date published: 2026-07-15T02:56:49Z
  audio: Ik Zag Twee Beren
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 132.848
    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: 0.512
    additional property: Energy
      type: PropertyValue
      value: 0.129
    additional property: Speechiness
      type: PropertyValue
      value: 0.053
    additional property: Acousticness
      type: PropertyValue
      value: 0.959
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.087
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.484
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.312
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Iene Miene Mutte
  type: MusicRecording
  duration: PT0M36S
  duration ms: 36012
  explicit: false
  by artist: Lemniscaat
  in album: Op Een Grote Paddenstoel
    type: MusicAlbum
    date published: 2019-03-16
  genre: children's music
  isrc code: QZDA41909286
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T07:45:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xacc773c1c6db3d5978bafad54fc5cc0e161d81ac4545bfea7ac9af524050e179
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956474
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956474
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909286
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T08:56:35Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc773c1c6db3d5978bafad54fc5cc0e161d81ac4545bfea7ac9af524050e179. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA41909286.
    date published: 2026-07-03T08:56:35Z
  audio: Iene Miene Mutte
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 103.021
    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: 0.714
    additional property: Energy
      type: PropertyValue
      value: 0.169
    additional property: Speechiness
      type: PropertyValue
      value: 0.455
    additional property: Acousticness
      type: PropertyValue
      value: 0.925
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.005
    additional property: Liveness
      type: PropertyValue
      value: 0.117
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.134
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.445
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Een Koetje en Een Kalfje
  type: MusicRecording
  duration: PT1M1S
  duration ms: 61484
  explicit: false
  by artist: Lemniscaat
  in album: Op Een Grote Paddenstoel
    type: MusicAlbum
    date published: 2019-03-16
  genre: children's music
  isrc code: QZDA41909287
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T03:40:41+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe65d14c80bdff16dc220c3a981f11a675b4a0ffa46cd2949773b53473cae716a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956474
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956474
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Een Koetje en Een Kalfje
track: Clowntje Piet
track: Op Een Grote Paddenstoel
track: Olifantje in Het Bos
track: Hoofd, Schouders, Knie en Teen
track: Helikopter
track: De Wielen Van de Bus
track: In de Maneschijn
track: Op Een Klein Stationnetje

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909287

OTSTimestamp
type: PropertyValue
value: 2026-07-03T08:56:35Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65d14c80bdff16dc220c3a981f11a675b4a0ffa46cd2949773b53473cae716a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA41909287.
date published: 2026-07-03T08:56:35Z

Een Koetje en Een Kalfje
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 101.232
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: 0.669
additional property: Energy
  type: PropertyValue
  value: 0.064
additional property: Speechiness
  type: PropertyValue
  value: 0.046
additional property: Acousticness
  type: PropertyValue
  value: 0.94
additional property: Instrumentalness
  type: PropertyValue
  value: 0.004
additional property: Liveness
  type: PropertyValue
  value: 0.109
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.925
additional property: Loudness (dB)
  type: PropertyValue
  value: -16.794
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

Clowntje Piet
type: MusicRecording
duration: PT1M10S
duration ms: 70494
explicit: false
by artist: Lemniscaat
in album: Op Een Grote Paddenstoel
  type: MusicAlbum
  date published: 2019-03-16
genre: children's music
isrc code: QZDA41909288
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T01:18:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x582a210bfd12fa5f9fba734d7d901924872393b164c8fab0c39847eab590d5d2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958224
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958224
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909288
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T02:28:43Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582a210bfd12fa5f9fba734d7d901924872393b164c8fab0c39847eab590d5d2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA41909288.
  date published: 2026-07-16T02:28:43Z
audio: Clowntje Piet
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 134.205
  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: 0.59
  additional property: Energy
    type: PropertyValue
    value: 0.108
  additional property: Speechiness
    type: PropertyValue
    value: 0.399
  additional property: Acousticness
    type: PropertyValue
    value: 0.769
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.17
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.897
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Op Een Grote Paddenstoel
type: MusicRecording
duration: PT1M13S
duration ms: 73280
explicit: false
by artist: Lemniscaat
in album: Op Een Grote Paddenstoel
  type: MusicAlbum
  date published: 2019-03-16
genre: children's music
isrc code: QZDA41909290
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-12T22:10:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdeb377819e5cfc5ce3f8da04a641a18c4a8bb9a37508e07620bb69dcdbbc8545
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957766
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957766
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909290
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-12T22:25:04Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb377819e5cfc5ce3f8da04a641a18c4a8bb9a37508e07620bb69dcdbbc8545. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZDA41909290.
  date published: 2026-07-12T22:25:04Z
audio: Op Een Grote Paddenstoel
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.591
  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: 0.491
  additional property: Energy
    type: PropertyValue
    value: 0.057
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.08
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.463
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.436
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Olifantje in Het Bos
type: MusicRecording
duration: PT1M9S
duration ms: 69635
explicit: false
by artist: Lemniscaat
in album: Op Een Grote Paddenstoel
  type: MusicAlbum
  date published: 2019-03-16
genre: children's music
isrc code: QZDA41909291
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-15T00:11:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3901b9e89beb7fd8e7d193f55b484f228397d987971a34578aa5ece7411f000
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958087
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958087
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909291
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-15T02:56:49Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3901b9e89beb7fd8e7d193f55b484f228397d987971a34578aa5ece7411f000. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZDA41909291.
  date published: 2026-07-15T02:56:49Z
audio: Olifantje in Het Bos
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.915
  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: 0.811
  additional property: Energy
    type: PropertyValue
    value: 0.093
  additional property: Speechiness
    type: PropertyValue
    value: 0.356
  additional property: Acousticness
    type: PropertyValue
    value: 0.894
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.625
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.714
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Hoofd, Schouders, Knie en Teen
type: MusicRecording
duration: PT0M43S
duration ms: 43768
explicit: false
by artist: Lemniscaat
in album: Op Een Grote Paddenstoel
  type: MusicAlbum
  date published: 2019-03-16
genre: children's music
isrc code: QZDA41909292
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T20:43:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x767ea2c51177a11947fdc40617127401f4b64208b8ba79a54b26d8d59a1909c5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958324
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958324
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909292
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T21:05:52Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767ea2c51177a11947fdc40617127401f4b64208b8ba79a54b26d8d59a1909c5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZDA41909292.
  date published: 2026-07-16T21:05:52Z
audio: Hoofd, Schouders, Knie en Teen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.962
  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: 0.623
  additional property: Energy
    type: PropertyValue
    value: 0.316
  additional property: Speechiness
    type: PropertyValue
    value: 0.3
  additional property: Acousticness
    type: PropertyValue
    value: 0.752
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.168
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.428
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.37
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Helikopter
type: MusicRecording
duration: PT1M4S
duration ms: 64503
explicit: false
by artist: Lemniscaat
in album: Op Een Grote Paddenstoel
  type: MusicAlbum
  date published: 2019-03-16
genre: children's music
isrc code: QZDA41909293
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-14T23:00:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa91083bb7aaac215c93158320db279ed5d8ce75ca6ab9dbf9925609ed0a28cff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958079
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958079
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909293
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-15T00:21:05Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91083bb7aaac215c93158320db279ed5d8ce75ca6ab9dbf9925609ed0a28cff. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZDA41909293.
  date published: 2026-07-15T00:21:05Z
audio: Helikopter
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.827
  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: 0.622
  additional property: Energy
    type: PropertyValue
    value: 0.178
  additional property: Speechiness
    type: PropertyValue
    value: 0.144
  additional property: Acousticness
    type: PropertyValue
    value: 0.744
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.262
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.945
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

De Wielen Van de Bus
type: MusicRecording
duration: PT0M56S
duration ms: 56515
explicit: false
by artist: Lemniscaat
in album: Op Een Grote Paddenstoel
  type: MusicAlbum
  date published: 2019-03-16
genre: children's music
isrc code: QZDA41909294
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T08:29:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc0a35f66c114adf2410e0e3f4b3ccc5653865588af7c2d18d0001a87cfcd7f82
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958268
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958268
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909294
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T08:56:51Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a35f66c114adf2410e0e3f4b3ccc5653865588af7c2d18d0001a87cfcd7f82. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZDA41909294.
  date published: 2026-07-16T08:56:51Z
audio: De Wielen Van de Bus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.656
  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: 0.689
  additional property: Energy
    type: PropertyValue
    value: 0.216
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.955
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.163
  additional property: Liveness
    type: PropertyValue
    value: 0.097
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.959
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.643
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

In de Maneschijn
type: MusicRecording
duration: PT1M49S
duration ms: 109503
explicit: false
by artist: Lemniscaat
in album: Op Een Grote Paddenstoel
  type: MusicAlbum
  date published: 2019-03-16
genre: children's music
isrc code: QZDA41909295
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T03:17:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf67ccfd4ebf36d563bec8f4498bb7c6cf25ec2a0185a8cb8830aa11ecd4899da
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958234
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958234
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909295
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T03:46:09Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67ccfd4ebf36d563bec8f4498bb7c6cf25ec2a0185a8cb8830aa11ecd4899da. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDA41909295.
  date published: 2026-07-16T03:46:09Z
audio: In de Maneschijn
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.465
  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: 0.665
  additional property: Energy
    type: PropertyValue
    value: 0.236
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.699
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.39
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.199
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Op Een Klein Stationnetje
type: MusicRecording
duration: PT1M22S
duration ms: 82568
explicit: false
by artist: Lemniscaat
in album: Op Een Grote Paddenstoel
  type: MusicAlbum
  date published: 2019-03-16
genre: children's music
isrc code: QZDA41909296
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-15T16:21:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2a3e241a7ab3881f8fca988eb439328cf606168e6473b0ffc44db0340ce6084f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958176
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958176
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909296
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-15T17:14:36Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3e241a7ab3881f8fca988eb439328cf606168e6473b0ffc44db0340ce6084f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41909296.
  date published: 2026-07-15T17:14:36Z
audio: Op Een Klein Stationnetje
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.429
  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: 0.483
  additional property: Energy
    type: PropertyValue
    value: 0.101
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.818
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.1
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.395
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.001
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Alles in de Wind
type: MusicAlbum
date published: 2019-06-02
track: Schuitje Varen
  type: MusicRecording
  duration: PT1M13S
  duration ms: 73211
  explicit: false
  by artist: Lemniscaat
  in album: Alles in de Wind
    type: MusicAlbum
    date published: 2019-06-02
  genre: children's music
  isrc code: QZFYX1963079
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T00:40:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9407a6f94849237606762190d893c23cb4acaf4e12d2553e3eab6f12332ef226
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958802
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958802
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963079
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T01:04:02Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9407a6f94849237606762190d893c23cb4acaf4e12d2553e3eab6f12332ef226. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZFYX1963079.
    date published: 2026-07-20T01:04:02Z
  audio: Schuitje Varen
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 173.419
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.372
    additional property: Energy
      type: PropertyValue
      value: 0.365
    additional property: Speechiness
      type: PropertyValue
      value: 0.295
    additional property: Acousticness
      type: PropertyValue
      value: 0.906
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.036
    additional property: Liveness
      type: PropertyValue
      value: 0.372
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.901
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.417
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Schip Moet Zeilen
  type: MusicRecording
  duration: PT1M14S
  duration ms: 74511
  explicit: false
  by artist: Lemniscaat
  in album: Alles in de Wind
    type: MusicAlbum
    date published: 2019-06-02
  genre: children's music
  isrc code: QZFYX1963080
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T18:39:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x181513698bf1189c278a2f25a978198830e72a936925fb9537403cb7e381b4e7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958770
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958770
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963080
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T19:26:13Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181513698bf1189c278a2f25a978198830e72a936925fb9537403cb7e381b4e7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZFYX1963080.
    date published: 2026-07-19T19:26:13Z
  audio: Schip Moet Zeilen
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 100.089
    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: 0.652
    additional property: Energy
      type: PropertyValue
      value: 0.396
    additional property: Speechiness
      type: PropertyValue
      value: 0.894
    additional property: Acousticness
      type: PropertyValue
      value: 0.816
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
      value: 0.099
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.947
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.916
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: In Een Blauwgeruite Kiel
  type: MusicRecording
  duration: PT1M22S
  duration ms: 82011
  explicit: false
  by artist: Lemniscaat
  in album: Alles in de Wind
    type: MusicAlbum
    date published: 2019-06-02
  genre: children's music
  isrc code: QZFYX1963081
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T00:10:06+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x978399944257c599b936ccd633eb30c42de973a37285ffbb439a170924bfa358
  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
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: In Een Blauwgeruite Kiel
track: Alles in de Wind
track: Schipper Mag Ik Overvaren
track: Varen Over de Baren
track: De Mosselman
track: Daar Vaart Een Man Op Zee
track: Daar Was Laatst Een Meisje Loos
track: Berend Botje Ging Uit Varen
track: Al Die Willen Te Kaap'ren Varen
track: Piet Hein

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963081

OTSTimestamp
type: PropertyValue
value: 2026-07-06T01:26:17Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978399944257c599b936ccd633eb30c42de973a37285ffbb439a170924bfa358. 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/QZFYX1963081.
date published: 2026-07-06T01:26:17Z

In Een Blauwgeruite Kiel
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 87.592
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: 0.578
additional property: Energy
  type: PropertyValue
  value: 0.08
additional property: Speechiness
  type: PropertyValue
  value: 0.079
additional property: Acousticness
  type: PropertyValue
  value: 0.976
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.215
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.73
additional property: Loudness (dB)
  type: PropertyValue
  value: -15.438
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

Alles in de Wind
type: MusicRecording
duration: PT1M10S
duration ms: 70262
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963082
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T04:56:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x33a99811ff77732b4bec75fbafd6bb7b1fe976e17500fbc9cd74f035f35db3b3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958827
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963082
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T05:07:11Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a99811ff77732b4bec75fbafd6bb7b1fe976e17500fbc9cd74f035f35db3b3. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/QZFYX1963082.
  date published: 2026-07-20T05:07:11Z
audio: Alles in de Wind
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.234
  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: 0.542
  additional property: Energy
    type: PropertyValue
    value: 0.328
  additional property: Speechiness
    type: PropertyValue
    value: 0.425
  additional property: Acousticness
    type: PropertyValue
    value: 0.934
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.103
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.781
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.346
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Schipper Mag Ik Overvaren
type: MusicRecording
duration: PT1M4S
duration ms: 64526
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963083
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-21T09:40:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5e4551cdc1629c738fcdfc73c7949de40c14cb60f0e4a5c0f8f47118792b9718
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958991
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958991
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963083
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T10:04:40Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4551cdc1629c738fcdfc73c7949de40c14cb60f0e4a5c0f8f47118792b9718. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963083.
  date published: 2026-07-21T10:04:40Z
audio: Schipper Mag Ik Overvaren
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.611
  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: 0.706
  additional property: Energy
    type: PropertyValue
    value: 0.322
  additional property: Speechiness
    type: PropertyValue
    value: 0.509
  additional property: Acousticness
    type: PropertyValue
    value: 0.821
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.167
  additional property: Liveness
    type: PropertyValue
    value: 0.814
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.977
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.112
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Varen Over de Baren
type: MusicRecording
duration: PT1M7S
duration ms: 67127
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963084
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T01:42:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x95f76e05c82cb80a87665c07f0e5a02d8289d5ade16f1e124938de3086f3a83b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958805
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958805
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963084
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T02:22:58Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f76e05c82cb80a87665c07f0e5a02d8289d5ade16f1e124938de3086f3a83b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZFYX1963084.
  date published: 2026-07-20T02:22:58Z
audio: Varen Over de Baren
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 50
  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
  additional property: Energy
    type: PropertyValue
    value: 0
  additional property: Speechiness
    type: PropertyValue
    value: 0
  additional property: Acousticness
    type: PropertyValue
    value: 0
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0
  additional property: Loudness (dB)
    type: PropertyValue
    value: -4.615
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

De Mosselman
type: MusicRecording
duration: PT0M45S
duration ms: 45207
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963085
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T03:23:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce3bb664320955a37acc5d29fbbb7b189abe2c2da43e6aa01c06e7611d248a3c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959094
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959094
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963085
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T03:33:16Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3bb664320955a37acc5d29fbbb7b189abe2c2da43e6aa01c06e7611d248a3c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZFYX1963085.
  date published: 2026-07-22T03:33:16Z
audio: De Mosselman
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 90.935
  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: 0.742
  additional property: Energy
    type: PropertyValue
    value: 0.189
  additional property: Speechiness
    type: PropertyValue
    value: 0.541
  additional property: Acousticness
    type: PropertyValue
    value: 0.947
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.007
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.65
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.858
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Daar Vaart Een Man Op Zee
type: MusicRecording
duration: PT0M55S
duration ms: 55772
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963086
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T05:40:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf110c9630cab40bc7bbd93a5b402f0a9d13bf67f8fe7484d6b459235f6281bad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959105
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959105
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963086
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T06:33:30Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf110c9630cab40bc7bbd93a5b402f0a9d13bf67f8fe7484d6b459235f6281bad. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZFYX1963086.
  date published: 2026-07-22T06:33:30Z
audio: Daar Vaart Een Man Op Zee
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 174.077
  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: 0.528
  additional property: Energy
    type: PropertyValue
    value: 0.299
  additional property: Speechiness
    type: PropertyValue
    value: 0.242
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.019
  additional property: Liveness
    type: PropertyValue
    value: 0.147
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.748
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.266
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Daar Was Laatst Een Meisje Loos
type: MusicRecording
duration: PT1M11S
duration ms: 71748
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963087
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T03:12:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc644f9b36513abb5e47d935c091deb42e4096710c509f1add1533954847ad862
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959094
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959094
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963087
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T03:33:16Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc644f9b36513abb5e47d935c091deb42e4096710c509f1add1533954847ad862. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZFYX1963087.
  date published: 2026-07-22T03:33:16Z
audio: Daar Was Laatst Een Meisje Loos
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 166.871
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.46
  additional property: Energy
    type: PropertyValue
    value: 0.239
  additional property: Speechiness
    type: PropertyValue
    value: 0.207
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.542
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.775
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.015
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Berend Botje Ging Uit Varen
type: MusicRecording
duration: PT0M57S
duration ms: 57769
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963088
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T13:46:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2fbaab35f53c413896a5f9c24d06a52495c144790f90270f60257fd042a1d6da
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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963088
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T18:48:28Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbaab35f53c413896a5f9c24d06a52495c144790f90270f60257fd042a1d6da. 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/QZFYX1963088.
  date published: 2026-07-05T18:48:28Z
audio: Berend Botje Ging Uit Varen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.809
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.548
  additional property: Energy
    type: PropertyValue
    value: 0.263
  additional property: Speechiness
    type: PropertyValue
    value: 0.186
  additional property: Acousticness
    type: PropertyValue
    value: 0.945
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.364
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.963
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.019
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Al Die Willen Te Kaap'ren Varen
type: MusicRecording
duration: PT1M21S
duration ms: 81523
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963089
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T22:08:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9141672a32f887046f130486d1a7dd24aa9b72cf87cad1a2662bd01099c6cb08
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/QZFYX1963089
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9141672a32f887046f130486d1a7dd24aa9b72cf87cad1a2662bd01099c6cb08. 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/QZFYX1963089.
  date published: 2026-07-06T01:25:57Z
audio: Al Die Willen Te Kaap'ren Varen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 180.332
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.429
  additional property: Energy
    type: PropertyValue
    value: 0.184
  additional property: Speechiness
    type: PropertyValue
    value: 0.351
  additional property: Acousticness
    type: PropertyValue
    value: 0.945
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.189
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.735
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.176
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Piet Hein
type: MusicRecording
duration: PT1M31S
duration ms: 91136
explicit: false
by artist: Lemniscaat
in album: Alles in de Wind
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1963090
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T12:16:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43340a1d856b45115a9df78ac23fd499539d11760f8120445195649441c944b6
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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1963090
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T18:48:28Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43340a1d856b45115a9df78ac23fd499539d11760f8120445195649441c944b6. 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/QZFYX1963090.
  date published: 2026-07-05T18:48:28Z
audio: Piet Hein
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.034
  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: 0.547
  additional property: Energy
    type: PropertyValue
    value: 0.335
  additional property: Speechiness
    type: PropertyValue
    value: 0.373
  additional property: Acousticness
    type: PropertyValue
    value: 0.901
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.006
  additional property: Liveness
    type: PropertyValue
    value: 0.322
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.675
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.934
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Joepie Joepie
type: MusicAlbum
date published: 2019-06-02
track: Joepie Joepie
  type: MusicRecording
  duration: PT1M0S
  duration ms: 60509
  explicit: false
  by artist: Lemniscaat
  in album: Joepie Joepie
    type: MusicAlbum
    date published: 2019-06-02
  genre: children's music
  isrc code: QZFYX1962137
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T11:58:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xcc7f09b07da536abe37f776928d56a65e06dd11827574869cf3ca8728bce9aac
  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/QZFYX1962137
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7f09b07da536abe37f776928d56a65e06dd11827574869cf3ca8728bce9aac. 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/QZFYX1962137.
    date published: 2026-07-03T19:59:51Z
  audio: Joepie Joepie
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 110.67
    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: 0.601
    additional property: Energy
      type: PropertyValue
      value: 0.271
    additional property: Speechiness
      type: PropertyValue
      value: 0.396
    additional property: Acousticness
      type: PropertyValue
      value: 0.926
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.075
    additional property: Liveness
      type: PropertyValue
      value: 0.308
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.49
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.394
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Er Zat Een Klein Zigeunermeisje
  type: MusicRecording
  duration: PT1M6S
  duration ms: 66175
  explicit: false
  by artist: Lemniscaat
  in album: Joepie Joepie
    type: MusicAlbum
    date published: 2019-06-02
  genre: children's music
  isrc code: QZFYX1962138
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T03:04:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7df44c9bbbde31842448849fd06821dbfd482abdab4fd5374b5afeebc27e28b2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958355
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958355
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1962138
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T03:11:50Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df44c9bbbde31842448849fd06821dbfd482abdab4fd5374b5afeebc27e28b2. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZFYX1962138.
    date published: 2026-07-17T03:11:50Z
  audio: Er Zat Een Klein Zigeunermeisje
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 95.631
    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: 0.648
    additional property: Energy
      type: PropertyValue
      value: 0.086
    additional property: Speechiness
      type: PropertyValue
      value: 0.066
    additional property: Acousticness
      type: PropertyValue
      value: 0.932
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.003
    additional property: Liveness
      type: PropertyValue
      value: 0.108
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.674
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.163
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Hoofd, Schouders, Knie en Teen
  type: MusicRecording
  duration: PT0M58S
  duration ms: 58257
  explicit: false
  by artist: Lemniscaat
  in album: Joepie Joepie
    type: MusicAlbum
    date published: 2019-06-02
  genre: children's music
  isrc code: QZFYX1962139
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T06:32:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xcb9c58465e3eabf666a432aeab4d1763073df4c40529fe2b36bd3441643ec5ca
  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
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Hoofd, Schouders, Knie en Teen
track: Ik Stond Laatst Voor Een Poppenkraam
track: Papegaaitje Leef Je Nog
track: We Maken Een Kringetje
track: De Zevensprong
track: Jan Huigen in de Ton
track: In Holland Staat Een Huis
track: Schipper Mag Ik Overvaren
track: Twee Emmertjes Water Halen
track: Zakdoekje Leggen

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1962139

OTSTimestamp
type: PropertyValue
value: 2026-07-04T11:19:20Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9c58465e3eabf666a432aeab4d1763073df4c40529fe2b36bd3441643ec5ca. 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/QZFYX1962139.
date published: 2026-07-04T11:19:20Z

Hoofd, Schouders, Knie en Teen
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 110.219
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: 0.744
additional property: Energy
  type: PropertyValue
  value: 0.2
additional property: Speechiness
  type: PropertyValue
  value: 0.177
additional property: Acousticness
  type: PropertyValue
  value: 0.877
additional property: Instrumentalness
  type: PropertyValue
  value: 0.049
additional property: Liveness
  type: PropertyValue
  value: 0.711
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.925
additional property: Loudness (dB)
  type: PropertyValue
  value: -16.516
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

Ik Stond Laatst Voor Een Poppenkraam
type: MusicRecording
duration: PT0M55S
duration ms: 55354
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962140
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T20:28:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf47f0585d527b6b351462906684ced5ebe34bab193cb67a7b70e92e31f4a80f4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956578
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956578
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1962140
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T02:23:20Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47f0585d527b6b351462906684ced5ebe34bab193cb67a7b70e92e31f4a80f4. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZFYX1962140.
  date published: 2026-07-04T02:23:20Z
audio: Ik Stond Laatst Voor Een Poppenkraam
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.662
  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: 0.703
  additional property: Energy
    type: PropertyValue
    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.301
  additional property: Acousticness
    type: PropertyValue
    value: 0.94
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.06
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.331
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.212
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Papegaaitje Leef Je Nog
type: MusicRecording
duration: PT0M52S
duration ms: 52011
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962141
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T21:39:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa438d554c1fa90e463e97ba2fcae24557d950ef3ffb121ea20971e7fe80c8a0d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958461
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958461
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1962141
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T23:18:11Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa438d554c1fa90e463e97ba2fcae24557d950ef3ffb121ea20971e7fe80c8a0d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFYX1962141.
  date published: 2026-07-17T23:18:11Z
audio: Papegaaitje Leef Je Nog
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.65
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.83
  additional property: Energy
    type: PropertyValue
    value: 0.2
  additional property: Speechiness
    type: PropertyValue
    value: 0.532
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.024
  additional property: Liveness
    type: PropertyValue
    value: 0.142
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.576
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.575
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

We Maken Een Kringetje
type: MusicRecording
duration: PT1M11S
duration ms: 71144
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962142
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T16:27:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbfc55ca63786918be3c913f344b0944a97847e1fcb28187cd4522b94997f2932
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956576
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956576
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1962142
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T02:06:47Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc55ca63786918be3c913f344b0944a97847e1fcb28187cd4522b94997f2932. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYX1962142.
  date published: 2026-07-04T02:06:47Z
audio: We Maken Een Kringetje
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.722
  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: 0.777
  additional property: Energy
    type: PropertyValue
    value: 0.088
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.907
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.005
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.854
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.978
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

De Zevensprong
type: MusicRecording
duration: PT1M21S
duration ms: 81639
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962143
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T20:22:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x35c13142acf03e3044760aa0dc0745132cd7ac670b100065219f885b878c6e41
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956578
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956578
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1962143
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T02:23:20Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c13142acf03e3044760aa0dc0745132cd7ac670b100065219f885b878c6e41. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZFYX1962143.
  date published: 2026-07-04T02:23:20Z
audio: De Zevensprong
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.182
  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: 0.786
  additional property: Energy
    type: PropertyValue
    value: 0.152
  additional property: Speechiness
    type: PropertyValue
    value: 0.137
  additional property: Acousticness
    type: PropertyValue
    value: 0.861
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.09
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.482
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.053
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Jan Huigen in de Ton
type: MusicRecording
duration: PT0M48S
duration ms: 48505
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962144
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T18:26:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9ed5ef784c8e99af65d43c68b50db309c0b85d48df2f3f3587a4dc24f40bee67
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/QZFYX1962144
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed5ef784c8e99af65d43c68b50db309c0b85d48df2f3f3587a4dc24f40bee67. 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/QZFYX1962144.
  date published: 2026-07-05T01:12:41Z
audio: Jan Huigen in de Ton
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.825
  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: 0.774
  additional property: Energy
    type: PropertyValue
    value: 0.335
  additional property: Speechiness
    type: PropertyValue
    value: 0.459
  additional property: Acousticness
    type: PropertyValue
    value: 0.912
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.061
  additional property: Liveness
    type: PropertyValue
    value: 0.268
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.831
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.115
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

In Holland Staat Een Huis
type: MusicRecording
duration: PT1M47S
duration ms: 107506
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962145
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-18T22:24:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x76688212fb22a82451d58d95a217ef7aa29f088575f43c2de4a3c6efd9161040
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958621
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958621
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1962145
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-18T22:59:44Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76688212fb22a82451d58d95a217ef7aa29f088575f43c2de4a3c6efd9161040. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFYX1962145.
  date published: 2026-07-18T22:59:44Z
audio: In Holland Staat Een Huis
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.215
  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: 0.711
  additional property: Energy
    type: PropertyValue
    value: 0.092
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.942
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.772
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.496
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Schipper Mag Ik Overvaren
type: MusicRecording
duration: PT0M54S
duration ms: 54008
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962146
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T18:17:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1eacb506495a0838082afc5ac025df7b8b05f1616b8f95807413607b1d77052a
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/QZFYX1962146
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eacb506495a0838082afc5ac025df7b8b05f1616b8f95807413607b1d77052a. 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/QZFYX1962146.
  date published: 2026-07-05T01:12:41Z
audio: Schipper Mag Ik Overvaren
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.46
  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: 0.825
  additional property: Energy
    type: PropertyValue
    value: 0.338
  additional property: Speechiness
    type: PropertyValue
    value: 0.851
  additional property: Acousticness
    type: PropertyValue
    value: 0.872
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.009
  additional property: Liveness
    type: PropertyValue
    value: 0.934
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.97
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.4
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Twee Emmertjes Water Halen
type: MusicRecording
duration: PT1M15S
duration ms: 75416
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962147
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T18:40:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x73d26d6b7a71ce1e187b22d453c2a786db56990b822c327c742b8897b28d5962
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/QZFYX1962147
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d26d6b7a71ce1e187b22d453c2a786db56990b822c327c742b8897b28d5962. 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/QZFYX1962147.
  date published: 2026-07-17T19:12:23Z
audio: Twee Emmertjes Water Halen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.761
  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: 0.728
  additional property: Energy
    type: PropertyValue
    value: 0.187
  additional property: Speechiness
    type: PropertyValue
    value: 0.363
  additional property: Acousticness
    type: PropertyValue
    value: 0.902
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.045
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.741
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.36
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Zakdoekje Leggen
type: MusicRecording
duration: PT0M53S
duration ms: 53149
explicit: false
by artist: Lemniscaat
in album: Joepie Joepie
  type: MusicAlbum
  date published: 2019-06-02
genre: children's music
isrc code: QZFYX1962148
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T17:57:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdda00bea6e75ed524f8b6e7035d131d51485c2f4f706ac3144d013a19b03c538
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/QZFYX1962148
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T18:01:47Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda00bea6e75ed524f8b6e7035d131d51485c2f4f706ac3144d013a19b03c538. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZFYX1962148.
  date published: 2026-07-19T18:01:47Z
audio: Zakdoekje Leggen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.256
  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: 0.595
  additional property: Energy
    type: PropertyValue
    value: 0.072
  additional property: Speechiness
    type: PropertyValue
    value: 0.064
  additional property: Acousticness
    type: PropertyValue
    value: 0.918
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.076
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.713
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.396
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Stille Nacht. Een Kerstspel in 12 Liedjes
type: MusicAlbum
date published: 2019-11-23
track: Sjok, Sjok, Sjok, Liep Het Ezeltje
  type: MusicRecording
  duration: PT0M50S
  duration ms: 50991
  explicit: false
  by artist: Lemniscaat
  in album: Stille Nacht. Een Kerstspel in 12 Liedjes
    type: MusicAlbum
    date published: 2019-11-23
  genre: children's music
  isrc code: QZHNC1939398
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T06:32:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x10c229c3a1ac05c11e0ec35174ea598c32020b890d20ea060a917e1ce35b40c5
  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/QZHNC1939398
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c229c3a1ac05c11e0ec35174ea598c32020b890d20ea060a917e1ce35b40c5. 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/QZHNC1939398.
    date published: 2026-07-04T10:04:33Z
  audio: Sjok, Sjok, Sjok, Liep Het Ezeltje
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.899
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.818
    additional property: Energy
      type: PropertyValue
      value: 0.322
    additional property: Speechiness
      type: PropertyValue
      value: 0.088
    additional property: Acousticness
      type: PropertyValue
      value: 0.771
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.002
    additional property: Liveness
      type: PropertyValue
      value: 0.104
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.616
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.761
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: De Herdertjes Lagen Bij Nachte
  type: MusicRecording
  duration: PT1M23S
  duration ms: 83147
  explicit: false
  by artist: Lemniscaat
  in album: Stille Nacht. Een Kerstspel in 12 Liedjes
    type: MusicAlbum
    date published: 2019-11-23
  genre: children's music
  isrc code: QZHNC1939400
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T04:08:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdac1155d164826d2d9642d032a27eae3cbb30e8c263642a68a82452549e1c209
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959100
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959100
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC1939400
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T05:29:55Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac1155d164826d2d9642d032a27eae3cbb30e8c263642a68a82452549e1c209. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZHNC1939400.
    date published: 2026-07-22T05:29:55Z
  audio: De Herdertjes Lagen Bij Nachte
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 113.039
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.662
    additional property: Energy
      type: PropertyValue
      value: 0.193
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.816
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.073
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.399
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.497
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major

Poesje Mauw
type: MusicAlbum
date published: 2020-02-04
track: Alle Eendjes Zwemmen in Het Water
  type: MusicRecording
  duration: PT0M54S
  duration ms: 54543
  explicit: false
  by artist: Lemniscaat
  in album: Poesje Mauw
    type: MusicAlbum
    date published: 2020-02-04
  genre: children's music
  isrc code: QZFZ22076374
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T03:37:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x51e40d013bdce400e58cb36e3c3c170c16d3574ad2d0f518c9ab89ddbafa96d1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958362
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958362
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076374
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T04:32:48Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e40d013bdce400e58cb36e3c3c170c16d3574ad2d0f518c9ab89ddbafa96d1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFZ22076374.
    date published: 2026-07-17T04:32:48Z
  audio: Alle Eendjes Zwemmen in Het Water
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.309
    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: 0.715
    additional property: Energy
      type: PropertyValue
      value: 0.331
    additional property: Speechiness
      type: PropertyValue
      value: 0.077
    additional property: Acousticness
      type: PropertyValue
      value: 0.794
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.005
    additional property: Liveness
      type: PropertyValue
      value: 0.36
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.63
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.531
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Visje, Visje in Het Water
  type: MusicRecording
  duration: PT0M54S
  duration ms: 54334
  explicit: false
  by artist: Lemniscaat
  in album: Poesje Mauw
    type: MusicAlbum
    date published: 2020-02-04
  genre: children's music
  isrc code: QZFZ22076375
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T08:17:17+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x541228761af11f763c3ead52740050a1b092117da87c9c1ec1cf0f977136fa14
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958268
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958268
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076375
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T08:56:51Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541228761af11f763c3ead52740050a1b092117da87c9c1ec1cf0f977136fa14. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZFZ22076375.
    date published: 2026-07-16T08:56:51Z
  audio: Visje, Visje in Het Water
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.162
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.513
    additional property: Energy
      type: PropertyValue
      value: 0.071
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.86
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.208
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.535
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.039
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Olifantje in Het Bos
  type: MusicRecording
  duration: PT1M1S
  duration ms: 61701
  explicit: false
  by artist: Lemniscaat
  in album: Poesje Mauw
    type: MusicAlbum
    date published: 2020-02-04
  genre: children's music
  isrc code: QZFZ22076376
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T16:29:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa0696983c16b9f385498ef0a75fb12539cd0829d670dc55cb7fc494123b207c9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958176
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958176
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Olifantje in Het Bos
track: Er Zaten Zeven Kikkertjes
track: In de Maneschijn
track: De Uil Zat in de Olmen
track: Vader Jacob
track: Damespaardje, Damespaardje
track: Poesje Mauw
track: Hansje Pansje Kevertje
track: Papegaaitje, Leef Je Nog?

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076376

OTSTimestamp
type: PropertyValue
value: 2026-07-15T17:14:36Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0696983c16b9f385498ef0a75fb12539cd0829d670dc55cb7fc494123b207c9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076376.
date published: 2026-07-15T17:14:36Z

Olifantje in Het Bos
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 129.786
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: 0.844
additional property: Energy
  type: PropertyValue
  value: 0.094
additional property: Speechiness
  type: PropertyValue
  value: 0.057
additional property: Acousticness
  type: PropertyValue
  value: 0.931
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.103
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.638
additional property: Loudness (dB)
  type: PropertyValue
  value: -16.211
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Er Zaten Zeven Kikkertjes
type: MusicRecording
duration: PT0M59S
duration ms: 59324
explicit: false
by artist: Lemniscaat
in album: Poesje Mauw
  type: MusicAlbum
  date published: 2020-02-04
genre: children's music
isrc code: QZFZ22076377
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T11:58:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9abec497efc53b2c8fc7da65be252fc7539ae794e4f826251f1c1c4e101ec561
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/QZFZ22076377
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abec497efc53b2c8fc7da65be252fc7539ae794e4f826251f1c1c4e101ec561. 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/QZFZ22076377.
  date published: 2026-07-03T19:59:51Z
audio: Er Zaten Zeven Kikkertjes
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 86.525
  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: 0.593
  additional property: Energy
    type: PropertyValue
    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.076
  additional property: Acousticness
    type: PropertyValue
    value: 0.857
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.332
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.834
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.529
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

In de Maneschijn
type: MusicRecording
duration: PT1M32S
duration ms: 92551
explicit: false
by artist: Lemniscaat
in album: Poesje Mauw
  type: MusicAlbum
  date published: 2020-02-04
genre: children's music
isrc code: QZFZ22076378
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T20:08:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ac6166872cd468c9f12ed748f44d09fd375001de24310cc8ab4d46dc78035b8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956551
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956551
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076378
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T21:18:05Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac6166872cd468c9f12ed748f44d09fd375001de24310cc8ab4d46dc78035b8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ22076378.
  date published: 2026-07-03T21:18:05Z
audio: In de Maneschijn
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.123
  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: 0.698
  additional property: Energy
    type: PropertyValue
    value: 0.371
  additional property: Speechiness
    type: PropertyValue
    value: 0.58
  additional property: Acousticness
    type: PropertyValue
    value: 0.807
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.09
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.877
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.33
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

De Uil Zat in de Olmen
type: MusicRecording
duration: PT1M19S
duration ms: 79908
explicit: false
by artist: Lemniscaat
in album: Poesje Mauw
  type: MusicAlbum
  date published: 2020-02-04
genre: children's music
isrc code: QZFZ22076379
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-12T21:46:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f13a3241c55ed015424643e9d8fd9224d3fce29d1d1959b4be1bf8633fdfc04
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957763
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957763
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076379
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-12T22:01:25Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13a3241c55ed015424643e9d8fd9224d3fce29d1d1959b4be1bf8633fdfc04. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZFZ22076379.
  date published: 2026-07-12T22:01:25Z
audio: De Uil Zat in de Olmen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.552
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.601
  additional property: Energy
    type: PropertyValue
    value: 0.136
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.808
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.006
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.274
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.965
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Vader Jacob
type: MusicRecording
duration: PT1M23S
duration ms: 83670
explicit: false
by artist: Lemniscaat
in album: Poesje Mauw
  type: MusicAlbum
  date published: 2020-02-04
genre: children's music
isrc code: QZFZ22076380
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T20:10:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8cce57395c0110fce1042da3b7c293f5e0752e382d295685585731f74763bd0f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956551
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956551
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076380
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T21:18:05Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cce57395c0110fce1042da3b7c293f5e0752e382d295685585731f74763bd0f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ22076380.
  date published: 2026-07-03T21:18:05Z
audio: Vader Jacob
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 211.048
  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: 0.074
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.268
  additional property: Liveness
    type: PropertyValue
    value: 0.334
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.569
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.75
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Damespaardje, Damespaardje
type: MusicRecording
duration: PT0M32S
duration ms: 32417
explicit: false
by artist: Lemniscaat
in album: Poesje Mauw
  type: MusicAlbum
  date published: 2020-02-04
genre: children's music
isrc code: QZFZ22076381
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T22:44:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3abb7cb48a2fbcba87a4ed5bcba1e934e9d256ac9a12c6d3b415e04db6140ac0
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/QZFZ22076381
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abb7cb48a2fbcba87a4ed5bcba1e934e9d256ac9a12c6d3b415e04db6140ac0. 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/QZFZ22076381.
  date published: 2026-07-04T10:04:33Z
audio: Damespaardje, Damespaardje
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.942
  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: 0.798
  additional property: Energy
    type: PropertyValue
    value: 0.373
  additional property: Speechiness
    type: PropertyValue
    value: 0.784
  additional property: Acousticness
    type: PropertyValue
    value: 0.698
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.071
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.216
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.906
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Poesje Mauw
type: MusicRecording
duration: PT0M48S
duration ms: 48796
explicit: false
by artist: Lemniscaat
in album: Poesje Mauw
  type: MusicAlbum
  date published: 2020-02-04
genre: children's music
isrc code: QZFZ22076382
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T19:05:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3f546ff003bde60023be4eaab2bb1ee6ad78299b759dd2bc3d3819b4bfc7a56
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958316
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958316
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076382
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T19:42:29Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f546ff003bde60023be4eaab2bb1ee6ad78299b759dd2bc3d3819b4bfc7a56. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ22076382.
  date published: 2026-07-16T19:42:29Z
audio: Poesje Mauw
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.784
  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: 0.7
  additional property: Energy
    type: PropertyValue
    value: 0.053
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.943
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.776
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.827
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Hansje Pansje Kevertje
type: MusicRecording
duration: PT0M56S
duration ms: 56293
explicit: false
by artist: Lemniscaat
in album: Poesje Mauw
  type: MusicAlbum
  date published: 2020-02-04
genre: children's music
isrc code: QZFZ22076384
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T00:44:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x18599b974082dbadb34cc91c6f44cbea036ed3e9c4ad44b1b6202eb765cbfa8e
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/QZFZ22076384
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18599b974082dbadb34cc91c6f44cbea036ed3e9c4ad44b1b6202eb765cbfa8e. 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/QZFZ22076384.
  date published: 2026-07-04T10:04:33Z
audio: Hansje Pansje Kevertje
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 198.869
  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: 0.5
  additional property: Energy
    type: PropertyValue
    value: 0.198
  additional property: Speechiness
    type: PropertyValue
    value: 0.303
  additional property: Acousticness
    type: PropertyValue
    value: 0.866
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.371
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.563
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.573
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Papegaaitje, Leef Je Nog?
type: MusicRecording
duration: PT0M40S
duration ms: 40542
explicit: false
by artist: Lemniscaat
in album: Poesje Mauw
  type: MusicAlbum
  date published: 2020-02-04
genre: children's music
isrc code: QZFZ22076385
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T03:39:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7e5f933e9a2c5e2d685ca2de61d19dfafc4b354b743f888ced7a3e854a8afccc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958362
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958362
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22076385
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T04:32:48Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5f933e9a2c5e2d685ca2de61d19dfafc4b354b743f888ced7a3e854a8afccc. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFZ22076385.
  date published: 2026-07-17T04:32:48Z
audio: Papegaaitje, Leef Je Nog?
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.579
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.836
  additional property: Energy
    type: PropertyValue
    value: 0.075
  additional property: Speechiness
    type: PropertyValue
    value: 0.113
  additional property: Acousticness
    type: PropertyValue
    value: 0.95
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.014
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.949
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.715
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sinterklaasliedjes
type: MusicAlbum
date published: 2020-10-12
track: Wie Komt Er Alle Jaren
  type: MusicRecording
  duration: PT1M43S
  duration ms: 103177
  explicit: false
  by artist: Lemniscaat
  in album: Sinterklaasliedjes
    type: MusicAlbum
    date published: 2020-10-12
  genre: children's music
  isrc code: QZMEN2090635
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T14:18:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5fd6f008abcd3b812dc8e49ef5cb0055b1f366be7ba268bd44543fb68cf2fb94
  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
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2090635
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T18:48:28Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd6f008abcd3b812dc8e49ef5cb0055b1f366be7ba268bd44543fb68cf2fb94. 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/QZMEN2090635.
    date published: 2026-07-05T18:48:28Z
  audio: Wie Komt Er Alle Jaren
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 107.032
    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: 0.813
    additional property: Energy
      type: PropertyValue
      value: 0.268
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.754
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.098
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.617
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.223
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Hoor de Wind Waait Door de Bomen
  type: MusicRecording
  duration: PT1M44S
  duration ms: 104096
  explicit: false
  by artist: Lemniscaat
  in album: Sinterklaasliedjes
    type: MusicAlbum
    date published: 2020-10-12
  genre: children's music
  isrc code: QZMEN2090636
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T20:39:21+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8a1b14c3ab9bcf31585cb11b31718a359d1c1d04a6e84282b931542a133c0ab9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959058
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959058
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2090636
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T21:09:36Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b14c3ab9bcf31585cb11b31718a359d1c1d04a6e84282b931542a133c0ab9. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2090636.
    date published: 2026-07-21T21:09:36Z
  audio: Hoor de Wind Waait Door de Bomen
    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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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.058
    additional property: Acousticness
      type: PropertyValue
      value: 0.961
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.003
    additional property: Liveness
      type: PropertyValue
      value: 0.19
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.441
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.786
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Zachtjes Gaan de Paardenvoetjes
  type: MusicRecording
  duration: PT1M19S
  duration ms: 79946
  explicit: false
  by artist: Lemniscaat
  in album: Sinterklaasliedjes
    type: MusicAlbum
    date published: 2020-10-12
  genre: children's music
  isrc code: QZMEN2090638
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T03:23:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7f48139d573a02e20c1bf2436fb883cabe5a24b1eea5d2eb0cecb7e9c4f0a9e2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 958959
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958959
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Zachtjes Gaan de Paardenvoetjes

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2090638

OTSTimestamp
type: PropertyValue
value: 2026-07-21T03:51:22Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f48139d573a02e20c1bf2436fb883cabe5a24b1eea5d2eb0cecb7e9c4f0a9e2. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZMEN2090638.
date published: 2026-07-21T03:51:22Z

Zachtjes Gaan de Paardenvoetjes
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 187.919
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: 0.754
additional property: Energy
  type: PropertyValue
  value: 0.172
additional property: Speechiness
  type: PropertyValue
  value: 0.392
additional property: Acousticness
  type: PropertyValue
  value: 0.867
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.06
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.961
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.662
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Major

De Gruffalo in streektalen
type: MusicAlbum
date published: 2020-10-23

Slaap Kindje Slaap
type: MusicAlbum
date published: 2020-11-19

Away in a Manger
type: MusicAlbum
date published: 2021-11-20

Rijen, rijen, rijen in een wagentje
type: MusicAlbum
date published: 2022-01-26
track: Klap eens in je handjes
  type: MusicRecording
  duration: PT1M35S
  duration ms: 95812
  explicit: false
  by artist: Lemniscaat
  in album: Rijen, rijen, rijen in een wagentje
    type: MusicAlbum
    date published: 2022-01-26
  genre: children's music
  isrc code: QZFZ42242430
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T11:54:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3d912219c3381a71c17232ba65dc79f10743e15efc46d859a94aaecabf3c65cf
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959128
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959128
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42242430
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T12:33:25Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d912219c3381a71c17232ba65dc79f10743e15efc46d859a94aaecabf3c65cf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZFZ42242430.
    date published: 2026-07-22T12:33:25Z
  audio: Klap eens in je handjes
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 121.197
    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: 0.738
    additional property: Energy
      type: PropertyValue
      value: 0.224
    additional property: Speechiness
      type: PropertyValue
      value: 0.287
    additional property: Acousticness
      type: PropertyValue
      value: 0.697
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.007
    additional property: Liveness
      type: PropertyValue
      value: 0.105
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.575
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.987
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Zagen, zagen, wiedewiedewagen
  type: MusicRecording
  duration: PT1M31S
  duration ms: 91250
  explicit: false
  by artist: Lemniscaat
  in album: Rijen, rijen, rijen in een wagentje
    type: MusicAlbum
    date published: 2022-01-26
  genre: children's music
  isrc code: QZFZ42242431
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T03:36:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x68a6631938835d18503c079a19391cfaf4effc493c4cb50a72f4b0b56b724f20
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956889
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956889
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42242431
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T06:56:49Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a6631938835d18503c079a19391cfaf4effc493c4cb50a72f4b0b56b724f20. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ42242431.
    date published: 2026-07-06T06:56:49Z
  audio: Zagen, zagen, wiedewiedewagen
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 122.058
    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: 0.812
    additional property: Energy
      type: PropertyValue
      value: 0.267
    additional property: Speechiness
      type: PropertyValue
      value: 0.05
    additional property: Acousticness
      type: PropertyValue
      value: 0.545
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.005
    additional property: Liveness
      type: PropertyValue
      value: 0.099
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.818
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.997
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Rijen, rijen, rijen in een wagentje
  type: MusicRecording
  duration: PT1M19S
  duration ms: 79750
  explicit: false
  by artist: Lemniscaat
  in album: Rijen, rijen, rijen in een wagentje
    type: MusicAlbum
    date published: 2022-01-26
  genre: children's music
  isrc code: QZFZ42242434
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T14:15:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2e2fcbc3d5e34699977491f19186bd0eec0a169ad163e7d25339bd016c3e4d69
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  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: Rijen, rijen, rijen in een wagentje

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42242434

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2fcbc3d5e34699977491f19186bd0eec0a169ad163e7d25339bd016c3e4d69. 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/QZFZ42242434.
date published: 2026-07-05T18:48:28Z

Rijen, rijen, rijen in een wagentje
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 120.011
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: 0.807
additional property: Energy
  type: PropertyValue
  value: 0.347
additional property: Speechiness
  type: PropertyValue
  value: 0.033
additional property: Acousticness
  type: PropertyValue
  value: 0.758
additional property: Instrumentalness
  type: PropertyValue
  value: 0.008
additional property: Liveness
  type: PropertyValue
  value: 0.243
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.857
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.136
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

Life Is but a Dream...
type: MusicAlbum
date published: 2022-10-18

De twaalf kerstdagen
type: MusicAlbum
date published: 2022-11-10

Vijf kleine kuikens
type: MusicAlbum
date published: 2024-02-21