Frans Halsema
type: MusicGroup
genre: nederpop
popularity: 37
followers: 13144
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9ef2745985a912b31d9fc1871294fa53dbf80e6d7c0ff5332ab88e11407ec01a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953408
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953408
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43f6d054-09c5-4425-ac3a-5b1a86b56e0f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43f6d054-09c5-4425-ac3a-5b1a86b56e0f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/43f6d054-09c5-4425-ac3a-5b1a86b56e0f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:28:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9ef2745985a912b31d9fc1871294fa53dbf80e6d7c0ff5332ab88e11407ec01a","name":"Frans Halsema","registered_at":"2026-06-11T18:40:32Z","symbol":"NIM0088484","token_address":"0xe0033aa1dfb8910017e6a31d6cae540d6e0ea8e0","type":"artist","uuid":"43f6d054-09c5-4425-ac3a-5b1a86b56e0f"}
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 → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef2745985a912b31d9fc1871294fa53dbf80e6d7c0ff5332ab88e11407ec01a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43f6d054-09c5-4425-ac3a-5b1a86b56e0f.json and https://artists.proofprofile.net/proofs/artist/43f6d054-09c5-4425-ac3a-5b1a86b56e0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x9ef2745985a912b31d9fc1871294fa53dbf80e6d7c0ff5332ab88e11407ec01a","name":"Frans Halsema","registered_at":"2026-06-11T18:40:32Z","symbol":"NIM0088484","token_address":"0xe0033aa1dfb8910017e6a31d6cae540d6e0ea8e0","type":"artist","uuid":"43f6d054-09c5-4425-ac3a-5b1a86b56e0f"}
album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
  track: De Laatste Tango
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192826
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
      type: MusicAlbum
      date published: 2018-06-29
    isrc code: NLA306600116
  track: Ik Ben Nou Nog Springlevend (Voor Ik Oud En Wijs Zal Zijn)
    type: MusicRecording
    duration: PT2M27S
    duration ms: 147333
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
      type: MusicAlbum
      date published: 2018-06-29
    isrc code: NLA306900136
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-24T19:54:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x398efa397ff99f54076db5a0c205ebe80bb7eb95e158f16d5473d33d22e68ca4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956312
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/956312
    additional property: OTSRecordURL
      type: PropertyValue
      value: https://artists.proofprofile.net/proofs/track/4vW7cOCf2czMn0IazFplP1.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4vW7cOCf2czMn0IazFplP1
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T05:09:12Z
    additional property: OTSCanonicalRecord
      type: PropertyValue
      value: {"copyright_id":"0x398efa397ff99f54076db5a0c205ebe80bb7eb95e158f16d5473d33d22e68ca4","isrc":"NLA306900136","name":"Ik Ben Nou Nog Springlevend (Voor Ik Oud En Wijs Zal Zijn)","registered_at":"2026-06-24T19:54:59Z","spotify_id":"4vW7cOCf2czMn0IazFplP1","type":"track"}
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398efa397ff99f54076db5a0c205ebe80bb7eb95e158f16d5473d33d22e68ca4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4vW7cOCf2czMn0IazFplP1.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4vW7cOCf2czMn0IazFplP1.
      date published: 2026-07-02T05:09:12Z
      text: {"copyright_id":"0x398efa397ff99f54076db5a0c205ebe80bb7eb95e158f16d5473d33d22e68ca4","isrc":"NLA306900136","name":"Ik Ben Nou Nog Springlevend (Voor Ik Oud En Wijs Zal Zijn)","registered_at":"2026-06-24T19:54:59Z","spotify_id":"4vW7cOCf2czMn0IazFplP1","type":"track"}
  track: De Training
    type: MusicRecording
    duration: PT4M20S
    duration ms: 260666
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
      type: MusicAlbum
      date published: 2018-06-29
    isrc code: NLUM70600604
  track: Sandra
    type: MusicRecording
    duration: PT2M57S
    duration ms: 177800
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
      type: MusicAlbum
      date published: 2018-06-29
    isrc code: NLA306900138
  track: Zeg Jules...
    type: MusicRecording
    duration: PT2M10S
    duration ms: 130000
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
      type: MusicAlbum
      date published: 2018-06-29
    isrc code: NLA306900132
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-11T15:01:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2bbfeb18a7902857ccdb791c0ea40ca72cc85f3e65a52a281ed2b9b7e3266775
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953536
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/953536
    additional property: OTSRecordURL
      type: PropertyValue
      value: https://artists.proofprofile.net/proofs/track/708sn1OAsULP6HoauPxmqc.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/708sn1OAsULP6HoauPxmqc
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T17:25:41Z
    additional property: OTSCanonicalRecord
      type: PropertyValue
      value: {"copyright_id":"0x2bbfeb18a7902857ccdb791c0ea40ca72cc85f3e65a52a281ed2b9b7e3266775","isrc":"NLA306900132","name":"Zeg Jules...","registered_at":"2026-06-11T15:01:30Z","spotify_id":"708sn1OAsULP6HoauPxmqc","type":"track"}
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbfeb18a7902857ccdb791c0ea40ca72cc85f3e65a52a281ed2b9b7e3266775. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/708sn1OAsULP6HoauPxmqc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/708sn1OAsULP6HoauPxmqc.
      date published: 2026-06-13T17:25:41Z
      text: {"copyright_id":"0x2bbfeb18a7902857ccdb791c0ea40ca72cc85f3e65a52a281ed2b9b7e3266775","isrc":"NLA306900132","name":"Zeg Jules...","registered_at":"2026-06-11T15:01:30Z","spotify_id":"708sn1OAsULP6HoauPxmqc","type":"track"}
  track: M'n Vlaanderenland
    type: MusicRecording
    duration: PT2M2S
    duration ms: 122813
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
      type: MusicAlbum
      date published: 2018-06-29
    isrc code: NLA306900013
  track: Kinderen
    type: MusicRecording
    duration: PT2M13S
    duration ms: 133666
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
      type: MusicAlbum
      date published: 2018-06-29
    isrc code: NLA307100044
  track: Op De Amsterdamse Wallen
    type: MusicRecording
    duration: PT2M1S
    duration ms: 121840
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
      type: MusicAlbum
      date published: 2018-06-29
    isrc code: NLA307100048
  track: Kees
    type: MusicRecording
    duration: PT3M52S
    duration ms: 232640
    explicit: false
    by artist: Frans Halsema
    in album: Favorieten Expres
    isrc code: NLA307100045
    additional property: CopyrightID
    additional property: CopyrightStatus
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSRecordURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSCanonicalRecord
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
  track: Vluchten Kan Niet Meer
  track: Zondagmiddag Buitenveldert
  track: Er Komt Een Dag
  track: Ik Mis
  track: Zij Was Goed Voor Mij
  track: Van Eeghenstraat
  track: Voor Haar
  track: Ik-Jij
  track: Als Er Iemand Op De Wereld Is (Dan Ben Jij Het)
  track: De Sneeuwman
  track: Elke Avond Als De Beeldbuis Is Gedoofd (Na De Televisie)
  track: Raden Maar - Live
  track: Geen Ja, Geen Nee - Live
album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
album: Bedoelde Je Die, Bedoelde Je Die daar ?
track: De Laatste Tango
track: Ik Ben Nou Nog Springlevend (Voor Ik Oud En Wijs Zal Zijn)
track: De Training
track: Sandra
track: Zeg Jules...
track: M'n Vlaanderenland
track: Kinderen
track: Op De Amsterdamse Wallen
track: Kees
track: Vluchten Kan Niet Meer
track: Zondagmiddag Buitenveldert
track: Er Komt Een Dag
track: Ik Mis
track: Zij Was Goed Voor Mij
track: Van Eeghenstraat
track: Voor Haar
track: Ik-Jij
track: Als Er Iemand Op De Wereld Is (Dan Ben Jij Het)
track: De Sneeuwman
track: Elke Avond Als De Beeldbuis Is Gedoofd (Na De Televisie)

Frans Halsema
type: MusicGroup

Favorieten Expres
type: MusicAlbum
date published: 2018-06-29

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-27T09:50:04+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x68bb61827d6919a1321734cf50b3f268f364cbc9de61717aaea451783562c2d4

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956304

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/956304

OTSRecordURL
type: PropertyValue
value: https://artists.proofprofile.net/proofs/track/5MPqk6gIXz0G6xWSVVaBy5.json

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5MPqk6gIXz0G6xWSVVaBy5

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:55:08Z

OTSCanonicalRecord
type: PropertyValue

OTSVerifyInstructions
type: PropertyValue
value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bb61827d6919a1321734cf50b3f268f364cbc9de61717aaea451783562c2d4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5MPqk6gIXz0G6xWSVVaBy5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5MPqk6gIXz0G6xWSVVaBy5.
date published: 2026-07-02T03:55:08Z

Vluchten Kan Niet Meer
type: MusicRecording
duration: PT3M41S
duration ms: 221160
explicit: false
by artist: Frans Halsema
by artist: Jenny Arean
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307100005
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T19:41:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69e0b55a7ded0449e8f86110bf9fb1f341607095cdf3a8286a27cecd1c201071
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2FUwyzcd4IveujPTuygjRH.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2FUwyzcd4IveujPTuygjRH
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x69e0b55a7ded0449e8f86110bf9fb1f341607095cdf3a8286a27cecd1c201071","isrc":"NLA307100005","name":"Vluchten Kan Niet Meer","registered_at":"2026-06-10T19:41:28Z","spotify_id":"2FUwyzcd4IveujPTuygjRH","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e0b55a7ded0449e8f86110bf9fb1f341607095cdf3a8286a27cecd1c201071. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2FUwyzcd4IveujPTuygjRH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2FUwyzcd4IveujPTuygjRH.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x69e0b55a7ded0449e8f86110bf9fb1f341607095cdf3a8286a27cecd1c201071","isrc":"NLA307100005","name":"Vluchten Kan Niet Meer","registered_at":"2026-06-10T19:41:28Z","spotify_id":"2FUwyzcd4IveujPTuygjRH","type":"track"}

Zondagmiddag Buitenveldert
type: MusicRecording
duration: PT2M22S
duration ms: 142213
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307100007

Er Komt Een Dag
type: MusicRecording
duration: PT2M36S
duration ms: 156306
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700041

Ik Mis
type: MusicRecording
duration: PT3M33S
duration ms: 213520
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700046

Zij Was Goed Voor Mij
type: MusicRecording
duration: PT3M12S
duration ms: 192880
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700040

Van Eeghenstraat
type: MusicRecording
duration: PT4M2S
duration ms: 242546
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700044

Voor Haar
type: MusicRecording
duration: PT2M51S
duration ms: 171653
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700037
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T13:32:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f591eb4275e7bce197f79a8f402f7541e265a91c24237eedaff54f50df54f6e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5oSNx87hsjk0Nz0pdQcdct.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5oSNx87hsjk0Nz0pdQcdct
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3f591eb4275e7bce197f79a8f402f7541e265a91c24237eedaff54f50df54f6e","isrc":"NLA307700037","name":"Voor Haar","registered_at":"2026-06-08T13:32:45Z","spotify_id":"5oSNx87hsjk0Nz0pdQcdct","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f591eb4275e7bce197f79a8f402f7541e265a91c24237eedaff54f50df54f6e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5oSNx87hsjk0Nz0pdQcdct.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5oSNx87hsjk0Nz0pdQcdct.
  date published: 2026-06-13T13:32:09Z
  text: {"copyright_id":"0x3f591eb4275e7bce197f79a8f402f7541e265a91c24237eedaff54f50df54f6e","isrc":"NLA307700037","name":"Voor Haar","registered_at":"2026-06-08T13:32:45Z","spotify_id":"5oSNx87hsjk0Nz0pdQcdct","type":"track"}

Ik-Jij
type: MusicRecording
duration: PT3M55S
duration ms: 235146
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA308100032

Als Er Iemand Op De Wereld Is (Dan Ben Jij Het)
type: MusicRecording
duration: PT4M26S
duration ms: 266826
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA308400008

De Sneeuwman
type: MusicRecording
duration: PT4M6S
duration ms: 246600
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29

Elke Avond Als De Beeldbuis Is Gedoofd (Na De Televisie)
type: MusicRecording
duration: PT4M5S
duration ms: 245066
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
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isrc code: NLA308400004

Raden Maar - Live
type: MusicRecording
duration: PT4M3S
duration ms: 243373
explicit: false
by artist: Gerard Cox
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29

Geen Ja, Geen Nee - Live
type: MusicRecording
duration: PT2M32S
duration ms: 152333
explicit: false
by artist: Gerard Cox
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29

...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
type: MusicAlbum
date published: 1975-01-01
track: Wat Ziet U Er Slecht Uit - Live
  type: MusicRecording
  duration: PT8M59S
  duration ms: 539333
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
    type: MusicAlbum
    date published: 1975-01-01
  isrc code: NLE070500118
track: Niet Te Geloven - Live
  type: MusicRecording
  duration: PT3M45S
  duration ms: 225400
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
    type: MusicAlbum
    date published: 1975-01-01
  isrc code: NLE070500119
track: De Klop Op De Deur - Live
  type: MusicRecording
  duration: PT7M57S
  duration ms: 477426
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
    type: MusicAlbum
    date published: 1975-01-01
track: Het Schildpadje - Live
  type: MusicRecording
  duration: PT3M32S
  duration ms: 212666
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
    type: MusicAlbum
    date published: 1975-01-01
  isrc code: NLE070500121
track: Voor U, Mevrouw - Live
  type: MusicRecording
  duration: PT2M48S
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  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
    type: MusicAlbum
    date published: 1975-01-01
  isrc code: NLE070500122
track: Belgische Attache - Live
  type: MusicRecording
  duration: PT5M15S
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  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
    type: MusicAlbum
    date published: 1975-01-01
  isrc code: NLE070500123
track: Ik Mis... - Live
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  duration: PT3M23S
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  explicit: false
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
    type: MusicAlbum
    date published: 1975-01-01
track: M'n Beste Lou - Medley / Live
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  duration: PT13M20S
  duration ms: 800940
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (2 / Live)
    type: MusicAlbum
    date published: 1975-01-01
  isrc code: NLE070500125

...Wat Je Zegt..., Dat Ben Je Zelf (Live)
type: MusicAlbum
date published: 1974-01-01
track: Wat Je Zegt, Dat Ben Je Zelf - Live
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  duration: PT6M5S
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  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500110
track: Trosspelletje - Live
  type: MusicRecording
  duration: PT3M54S
  duration ms: 234666
  explicit: false
  by artist: Frans Halsema
  by artist: Gerard Cox
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLA300400334
track: Voor Een Briefkaart Op De Eerste Rang - Live
  type: MusicRecording
  duration: PT1M44S
  duration ms: 104933
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500111
track: Raden Maar - Live
  type: MusicRecording
  duration: PT4M3S
  duration ms: 243840
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500109
track: Geen Ja, Geen Nee - Live
  type: MusicRecording
  duration: PT2M30S
  duration ms: 150866
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500112
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T13:24:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x14b46a53ebe7970f34c8f61c9548a0f8a37034746f896551af0eacf82b7771d5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956349
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/35ekM28eOGLIeykM1tj6e4.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/35ekM28eOGLIeykM1tj6e4
  additional property: OTSTimestamp
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    value: 2026-07-02T11:34:59Z
  additional property: OTSCanonicalRecord
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b46a53ebe7970f34c8f61c9548a0f8a37034746f896551af0eacf82b7771d5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/35ekM28eOGLIeykM1tj6e4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/35ekM28eOGLIeykM1tj6e4.
    date published: 2026-07-02T11:34:59Z
    text: {"copyright_id":"0x14b46a53ebe7970f34c8f61c9548a0f8a37034746f896551af0eacf82b7771d5","isrc":"NLE070500112","name":"Geen Ja, Geen Nee - Live","registered_at":"2026-06-25T13:24:26Z","spotify_id":"35ekM28eOGLIeykM1tj6e4","type":"track"}
track: Hier Zit Ik Nu - Live
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  duration: PT2M53S
  duration ms: 173933
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500113
track: Een, Twee, Drie - Live
  type: MusicRecording
  duration: PT5M43S
  duration ms: 343760
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500114
track: De Laatste Getrouwen - Live
  type: MusicRecording
  duration: PT13M8S
  duration ms: 788173
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500115
track: Miriam - Live
  type: MusicRecording
  duration: PT2M51S
  duration ms: 171226
  explicit: false
  by artist: Frans Halsema
  by artist: Gerard Cox
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
track: De Tolk - Live
  type: MusicRecording
  duration: PT3M8S
  duration ms: 188600
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500116
track: Honderd Procent - Live
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  duration: PT9M32S
  duration ms: 572840
  explicit: false
  by artist: Gerard Cox
  by artist: Frans Halsema
  in album: ...Wat Je Zegt..., Dat Ben Je Zelf (Live)
    type: MusicAlbum
    date published: 1974-01-01
  isrc code: NLE070500117

Bedoelde Je Die, Bedoelde Je Die daar ?
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date published: 1970-01-01
track: Bedoelde Je Die, Bedoelde Je Die daar ?
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  duration: PT3M46S
  duration ms: 226266
  explicit: false
  by artist: Frans Halsema
  in album: Bedoelde Je Die, Bedoelde Je Die daar ?
    type: MusicAlbum
    date published: 1970-01-01
track: Bedoelde Je Die, Bedoelde Je Die daar ? (Instrumental)
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  duration: PT3M43S
  duration ms: 223626
  explicit: false
  by artist: Frans Halsema
  in album: Bedoelde Je Die, Bedoelde Je Die daar ?
    type: MusicAlbum
    date published: 1970-01-01

De Laatste Tango
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duration: PT3M12S
duration ms: 192826
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA306600116

Ik Ben Nou Nog Springlevend (Voor Ik Oud En Wijs Zal Zijn)
type: MusicRecording
duration: PT2M27S
duration ms: 147333
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA306900136
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T19:54:59+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x398efa397ff99f54076db5a0c205ebe80bb7eb95e158f16d5473d33d22e68ca4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956312
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/4vW7cOCf2czMn0IazFplP1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4vW7cOCf2czMn0IazFplP1
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x398efa397ff99f54076db5a0c205ebe80bb7eb95e158f16d5473d33d22e68ca4","isrc":"NLA306900136","name":"Ik Ben Nou Nog Springlevend (Voor Ik Oud En Wijs Zal Zijn)","registered_at":"2026-06-24T19:54:59Z","spotify_id":"4vW7cOCf2czMn0IazFplP1","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398efa397ff99f54076db5a0c205ebe80bb7eb95e158f16d5473d33d22e68ca4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4vW7cOCf2czMn0IazFplP1.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4vW7cOCf2czMn0IazFplP1.
  date published: 2026-07-02T05:09:12Z
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De Training
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duration: PT4M20S
duration ms: 260666
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLUM70600604

Sandra
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duration: PT2M57S
duration ms: 177800
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA306900138

Zeg Jules...
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duration: PT2M10S
duration ms: 130000
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA306900132
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2bbfeb18a7902857ccdb791c0ea40ca72cc85f3e65a52a281ed2b9b7e3266775
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/708sn1OAsULP6HoauPxmqc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/708sn1OAsULP6HoauPxmqc
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbfeb18a7902857ccdb791c0ea40ca72cc85f3e65a52a281ed2b9b7e3266775. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/708sn1OAsULP6HoauPxmqc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/708sn1OAsULP6HoauPxmqc.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x2bbfeb18a7902857ccdb791c0ea40ca72cc85f3e65a52a281ed2b9b7e3266775","isrc":"NLA306900132","name":"Zeg Jules...","registered_at":"2026-06-11T15:01:30Z","spotify_id":"708sn1OAsULP6HoauPxmqc","type":"track"}

M'n Vlaanderenland
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duration: PT2M2S
duration ms: 122813
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA306900013

Kinderen
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duration: PT2M13S
duration ms: 133666
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307100044

Op De Amsterdamse Wallen
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duration: PT2M1S
duration ms: 121840
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307100048

Kees
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duration: PT3M52S
duration ms: 232640
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307100045
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T09:50:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5MPqk6gIXz0G6xWSVVaBy5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5MPqk6gIXz0G6xWSVVaBy5
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bb61827d6919a1321734cf50b3f268f364cbc9de61717aaea451783562c2d4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5MPqk6gIXz0G6xWSVVaBy5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5MPqk6gIXz0G6xWSVVaBy5.
  date published: 2026-07-02T03:55:08Z

Vluchten Kan Niet Meer
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duration: PT3M41S
duration ms: 221160
explicit: false
by artist: Frans Halsema
by artist: Jenny Arean
in album: Favorieten Expres
  type: MusicAlbum
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isrc code: NLA307100005
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T19:41:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69e0b55a7ded0449e8f86110bf9fb1f341607095cdf3a8286a27cecd1c201071
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2FUwyzcd4IveujPTuygjRH.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2FUwyzcd4IveujPTuygjRH
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e0b55a7ded0449e8f86110bf9fb1f341607095cdf3a8286a27cecd1c201071. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2FUwyzcd4IveujPTuygjRH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2FUwyzcd4IveujPTuygjRH.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x69e0b55a7ded0449e8f86110bf9fb1f341607095cdf3a8286a27cecd1c201071","isrc":"NLA307100005","name":"Vluchten Kan Niet Meer","registered_at":"2026-06-10T19:41:28Z","spotify_id":"2FUwyzcd4IveujPTuygjRH","type":"track"}

Zondagmiddag Buitenveldert
type: MusicRecording
duration: PT2M22S
duration ms: 142213
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307100007

Er Komt Een Dag
type: MusicRecording
duration: PT2M36S
duration ms: 156306
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700041

Ik Mis
type: MusicRecording
duration: PT3M33S
duration ms: 213520
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700046

Zij Was Goed Voor Mij
type: MusicRecording
duration: PT3M12S
duration ms: 192880
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700040

Van Eeghenstraat
type: MusicRecording
duration: PT4M2S
duration ms: 242546
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700044

Voor Haar
type: MusicRecording
duration: PT2M51S
duration ms: 171653
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA307700037
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T13:32:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f591eb4275e7bce197f79a8f402f7541e265a91c24237eedaff54f50df54f6e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5oSNx87hsjk0Nz0pdQcdct.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5oSNx87hsjk0Nz0pdQcdct
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3f591eb4275e7bce197f79a8f402f7541e265a91c24237eedaff54f50df54f6e","isrc":"NLA307700037","name":"Voor Haar","registered_at":"2026-06-08T13:32:45Z","spotify_id":"5oSNx87hsjk0Nz0pdQcdct","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f591eb4275e7bce197f79a8f402f7541e265a91c24237eedaff54f50df54f6e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5oSNx87hsjk0Nz0pdQcdct.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5oSNx87hsjk0Nz0pdQcdct.
  date published: 2026-06-13T13:32:09Z
  text: {"copyright_id":"0x3f591eb4275e7bce197f79a8f402f7541e265a91c24237eedaff54f50df54f6e","isrc":"NLA307700037","name":"Voor Haar","registered_at":"2026-06-08T13:32:45Z","spotify_id":"5oSNx87hsjk0Nz0pdQcdct","type":"track"}

Ik-Jij
type: MusicRecording
duration: PT3M55S
duration ms: 235146
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA308100032

Als Er Iemand Op De Wereld Is (Dan Ben Jij Het)
type: MusicRecording
duration: PT4M26S
duration ms: 266826
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA308400008

De Sneeuwman
type: MusicRecording
duration: PT4M6S
duration ms: 246600
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29

Elke Avond Als De Beeldbuis Is Gedoofd (Na De Televisie)
type: MusicRecording
duration: PT4M5S
duration ms: 245066
explicit: false
by artist: Frans Halsema
in album: Favorieten Expres
  type: MusicAlbum
  date published: 2018-06-29
isrc code: NLA308400004