Kayak
type: MusicGroup
genre: art rock
genre: nederpop
genre: progressive rock
genre: symphonic rock
description: thumb|Kayak paddlers in Pakistan snow training at Hanna Lake thumb|right|Inuk seal hunter in a kayak, armed with a harpoon|alt=Man sitting with legs covered in a boat that tapers to a point at each en
popularity: 34
followers: 18041
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additional property: CopyrightChainExplorerURL
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additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T21:20:00Z
album: See See The Sun
  type: MusicAlbum
  date published: 1973
  track: Lyrics
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    by artist: Kayak
    in album: See See The Sun
      type: MusicAlbum
      date published: 1973
    genre: art rock
    genre: nederpop
    genre: progressive rock
    genre: symphonic rock
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb74243bcff06d86021f7a368e245ac82641227c65b93439de254b123b9976f. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/NLA271190001.
      date published: 2026-07-12T03:18:52Z
    audio: Lyrics
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  track: Mammoth
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      type: MusicAlbum
      date published: 1973
    genre: art rock
    genre: nederpop
    genre: progressive rock
    genre: symphonic rock
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-14T20:39:42Z
    audio: Mammoth
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  track: See See The Sun
album: Kayak
album: Royal Bed Bouncer
album: Royal Bed Bouncer (Remastered)
album: The Last Encore (Re-Issue)
album: The Last Encore
album: Starlight Dancer
album: Phantom Of The Night
album: Phantom Of The Night (Remastered)
album: Phantom of the Night
album: Merlin
album: Eyewitness
album: Eye Witness
album: Periscope Life (Re-Issue)
album: Close To The Fire
album: Close to the Fire
album: Chance for a live time
album: Night Vision
album: 3 Originals
album: Merlin - Bard of the Unseen
album: Merlin: Bard Of The Unseen
album: Merlin - Bard Of The Unseen
album: Nostradamus - The Fate of Man
album: Nostradamus: The Fate Of Man
album: Kayakoustic
album: KAYAKoustic (Live at Theater 'T Kielzog, Hoogezand-Sappemeer, 23/11/2006)
album: Coming Up for Air
album: Coming Up For Air
album: Anniversary Concert (Live at Paradiso, Amsterdam, 07/10/2008)
album: Letters from Utopia
album: Phantom of the Night (Very Best of Kayak)
album: Phantom Of The Night - The Very Best Of
album: Anywhere But Here
album: Life Is Good
album: Life is good
album: Kayak - The Singles
album: Kayak: Singles, Vol. 2
album: Special 40th Anniversary Release
album: Cleopatra (The Crown of Isis)
album: Cleopatra The Crown Of Isis
album: Golden Years Of Dutch Pop Music
album: Nostradamus The Fate Of man
album: KAYAKoustic - Live
album: Letters From Utopia
album: The Anniversary Concert - Live in Paradiso
album: Ten Best
album: Live Legends In Concert Vol. 32
album: Feathers and Tar
album: La Peregrina
album: All That I Want
album: Seventeen
album: Mystery
album: Waiting
album: Out of This World
album: Out Of This World
album: Looking Down from My Window
album: Back to Shore - The 2022 Farewell Tour
track: Ruthless Queen - Remastered 2017
track: Periscope Life

Ruthless Queen - Remastered 2017
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duration: PT4M51S
duration ms: 291840
explicit: false
by artist: Kayak
in album: Best 70's Hits
  type: MusicAlbum
  date published: 2021-02-19
isrc code: NLUM71700250
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Ruthless Queen - Remastered 2017
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Periscope Life
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duration: PT3M31S
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explicit: false
by artist: Kayak
in album: Nederpop Hits uit de 80's
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  date published: 2013-04-05
isrc code: NLS241103986
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:04:01Z
audio: Periscope Life
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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See See The Sun
type: MusicRecording
duration: PT4M11S
duration ms: 251680
explicit: false
by artist: Kayak
in album: See See The Sun
  type: MusicAlbum
  date published: 1973
genre: art rock
genre: nederpop
genre: progressive rock
genre: symphonic rock
isrc code: NLA270400019
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additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-18T02:58:58Z
audio: See See The Sun
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Kayak
type: MusicAlbum
date published: 1974
track: They Get To Know Me
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c82bc61963942561be03bbda40a31a563c235d9721141492e8e43ceae837bb4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:20Z), 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/NLA271200183.
    date published: 2026-07-19T18:04:20Z
  audio: They Get To Know Me
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 178.598
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.165
    additional property: Energy
      type: PropertyValue
      value: 0.395
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.131
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.017
    additional property: Liveness
      type: PropertyValue
      value: 0.34
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.068
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.952
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Mireille
  type: MusicRecording
  duration: PT2M12S
  duration ms: 132066
  explicit: false
  by artist: Kayak
  in album: Kayak
    type: MusicAlbum
    date published: 1974
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLA271200186
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T02:46:57+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x07b8fe067aad3ea55f721b9796af0101ea731ce419a746431fed5bc49a4fdb3d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957644
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957644
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA271200186
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T03:18:52Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b8fe067aad3ea55f721b9796af0101ea731ce419a746431fed5bc49a4fdb3d. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/NLA271200186.
    date published: 2026-07-12T03:18:52Z
  audio: Mireille
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 171.616
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.252
    additional property: Energy
      type: PropertyValue
      value: 0.076
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.136
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.906
    additional property: Liveness
      type: PropertyValue
      value: 0.098
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.04
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.791
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major

Royal Bed Bouncer
type: MusicAlbum
date published: 1975-01-04

Royal Bed Bouncer (Remastered)
type: MusicAlbum
date published: 1975-10-11

The Last Encore (Re-Issue)
type: MusicAlbum
date published: 1976

The Last Encore
type: MusicAlbum
date published: 1976
track: Nothingness
  type: MusicRecording
  duration: PT3M56S
  duration ms: 236266
  explicit: false
  by artist: Kayak
  in album: The Last Encore
    type: MusicAlbum
    date published: 1976
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLA307600070
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T13:25:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x493480424577d1efcced86831647e06ec2b12349b6160ad10ef273722402a044
  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/NLA307600070
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T16:27:43Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493480424577d1efcced86831647e06ec2b12349b6160ad10ef273722402a044. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:43Z), 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/NLA307600070.
    date published: 2026-07-19T16:27:43Z
  audio: Nothingness
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 88.796
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.161
    additional property: Energy
      type: PropertyValue
      value: 0.246
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.604
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.348
    additional property: Liveness
      type: PropertyValue
      value: 0.09
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.067
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.02
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Starlight Dancer
type: MusicAlbum
date published: 1977-01-01
track: Want You To Be Mine
  type: MusicRecording
  duration: PT3M38S
  duration ms: 218306
  explicit: false
  by artist: Kayak
  in album: Starlight Dancer
    type: MusicAlbum
    date published: 1977-01-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLA307700092
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T22:57:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb2335aa7a44eef6f3da7e6b8f6e5425c83569f036a6ebc7b03df12bb89fa3034
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958341
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958341
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA307700092
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T01:08:10Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2335aa7a44eef6f3da7e6b8f6e5425c83569f036a6ebc7b03df12bb89fa3034. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/NLA307700092.
    date published: 2026-07-17T01:08:10Z
  audio: Want You To Be Mine
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 111.893
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.713
    additional property: Energy
      type: PropertyValue
      value: 0.403
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.024
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.004
    additional property: Liveness
      type: PropertyValue
      value: 0.379
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.729
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.258
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Irene
  type: MusicRecording
  duration: PT4M25S
  duration ms: 265173
  explicit: false
  by artist: Kayak
  in album: Starlight Dancer
    type: MusicAlbum
    date published: 1977-01-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLA307700094
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T04:28:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5dfc51f1acbb08174de80e76dc9caec7673f9a96fc26fce96ed48fff9e6fc8c5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956772
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956772
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA307700094
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T10:01:46Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfc51f1acbb08174de80e76dc9caec7673f9a96fc26fce96ed48fff9e6fc8c5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA307700094.
    date published: 2026-07-05T10:01:46Z
  audio: Irene
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.465
    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: 0.435
    additional property: Energy
      type: PropertyValue
      value: 0.406
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.013
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.836
    additional property: Liveness
      type: PropertyValue
      value: 0.153
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.144
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.716
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Phantom Of The Night
type: MusicAlbum
date published: 1978

Phantom Of The Night (Remastered)
type: MusicAlbum
date published: 1978-01-01
track: Keep The Change
  type: MusicRecording
  duration: PT3M40S
  duration ms: 220466
  explicit: false
  by artist: Kayak
  in album: Phantom Of The Night (Remastered)
    type: MusicAlbum
    date published: 1978-01-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLUM71700249
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T17:31:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6601ccbe109e6b0825fcbc9e9402a939819f51011d1aae8fce68f4fe55b6d767
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958761
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958761
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM71700249
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T20:34:22Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6601ccbe109e6b0825fcbc9e9402a939819f51011d1aae8fce68f4fe55b6d767. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:34:22Z), 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/NLUM71700249.
    date published: 2026-07-19T20:34:22Z
  audio: Keep The Change
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.036
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.652
    additional property: Energy
      type: PropertyValue
      value: 0.594
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.222
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.217
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.932
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.717
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: First Signs Of Spring
  type: MusicRecording
  duration: PT3M45S
  duration ms: 225120
  explicit: false
  by artist: Kayak
  in album: Phantom Of The Night (Remastered)
    type: MusicAlbum
    date published: 1978-01-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLUM71700492
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T11:43:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xca9df26eb979575e199bef5ff98456c98611116561a55fc70b2d862591d1ccd9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958157
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958157
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM71700492
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T14:45:44Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9df26eb979575e199bef5ff98456c98611116561a55fc70b2d862591d1ccd9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:44Z), 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/NLUM71700492.
    date published: 2026-07-15T14:45:44Z
  audio: First Signs Of Spring
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 91.881
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.22
    additional property: Energy
      type: PropertyValue
      value: 0.152
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.849
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.161
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.183
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.325
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Daphne
  type: MusicRecording
  duration: PT5M12S
  duration ms: 312733
  explicit: false
  by artist: Kayak
  in album: Phantom Of The Night (Remastered)
    type: MusicAlbum
    date published: 1978-01-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLUM71700252
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T06:11:05+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Daphne
track: Phantom Of The Night

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xe3450a9ff1a75f9a0c5b66e2822ab61e31bd171300402c09886875fd3783bfd6

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958251

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958251

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM71700252

OTSTimestamp
type: PropertyValue
value: 2026-07-16T06:29:25Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3450a9ff1a75f9a0c5b66e2822ab61e31bd171300402c09886875fd3783bfd6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NLUM71700252.
date published: 2026-07-16T06:29:25Z

Daphne
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 124.363
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: 0.274
additional property: Energy
  type: PropertyValue
  value: 0.397
additional property: Speechiness
  type: PropertyValue
  value: 0.033
additional property: Acousticness
  type: PropertyValue
  value: 0.32
additional property: Instrumentalness
  type: PropertyValue
  value: 0.051
additional property: Liveness
  type: PropertyValue
  value: 0.105
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.143
additional property: Loudness (dB)
  type: PropertyValue
  value: -12.003
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

Phantom Of The Night
type: MusicRecording
duration: PT4M59S
duration ms: 299760
explicit: false
by artist: Kayak
in album: Phantom Of The Night (Remastered)
  type: MusicAlbum
  date published: 1978-01-01
genre: art rock
genre: nederpop
genre: progressive rock
genre: symphonic rock
isrc code: NLUM71700256
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-18T17:52:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x67b0b2642c491318d88779704a5db26378e377803e0db6cb3c90f77cef6df823
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958594
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958594
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM71700256
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-18T18:05:01Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b0b2642c491318d88779704a5db26378e377803e0db6cb3c90f77cef6df823. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NLUM71700256.
  date published: 2026-07-18T18:05:01Z
audio: Phantom Of The Night
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.585
  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: 0.338
  additional property: Energy
    type: PropertyValue
    value: 0.325
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.142
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.111
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.879
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Phantom of the Night
type: MusicAlbum
date published: 1978-10-16

Merlin
type: MusicAlbum
date published: 1981

Merlin
type: MusicAlbum
date published: 1981

Eyewitness
type: MusicAlbum
date published: 1981-01-01

Eye Witness
type: MusicAlbum
date published: 1981-01-01

Merlin
type: MusicAlbum
date published: 1981-01-01

Eyewitness
type: MusicAlbum
date published: 1981-06-01
track: Irene
  type: MusicRecording
  duration: PT3M13S
  duration ms: 193493
  explicit: false
  by artist: Kayak
  in album: Eyewitness
    type: MusicAlbum
    date published: 1981-06-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLW241100018
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T22:34:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x89ad13f61744681a277d106bd34f64689ca9e3994cbb38a84a2403fa15bd96a5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956639
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956639
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW241100018
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T11:19:20Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ad13f61744681a277d106bd34f64689ca9e3994cbb38a84a2403fa15bd96a5. 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/NLW241100018.
    date published: 2026-07-04T11:19:20Z
  audio: Irene
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 119.809
    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: 0.525
    additional property: Energy
      type: PropertyValue
      value: 0.306
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.089
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.714
    additional property: Liveness
      type: PropertyValue
      value: 0.133
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.068
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.332
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Eyewitness
type: MusicAlbum
date published: 1981-12-22

Periscope Life (Re-Issue)
type: MusicAlbum
date published: 1993-01-01
track: Sad To Say Farewell
  type: MusicRecording
  duration: PT4M30S
  duration ms: 270266
  explicit: false
  by artist: Kayak
  in album: Periscope Life (Re-Issue)
    type: MusicAlbum
    date published: 1993-01-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLA308000066
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T15:26:57+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x876abf2b4059a85250467b3a8f46f9a2a39558f8f40c7732ddbedb2e24143cf7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956826
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA308000066
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T19:27:56Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876abf2b4059a85250467b3a8f46f9a2a39558f8f40c7732ddbedb2e24143cf7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA308000066.
    date published: 2026-07-05T19:27:56Z
  audio: Sad To Say Farewell
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 119.624
    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: 0.33
    additional property: Energy
      type: PropertyValue
      value: 0.36
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.496
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.126
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.257
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.673
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major

Close To The Fire
type: MusicAlbum
date published: 2000

Close to the Fire
type: MusicAlbum
date published: 2000-01-01

Close To The Fire
type: MusicAlbum
date published: 2000-05-24
track: Frozen Flame
  type: MusicRecording
  duration: PT6M36S
  duration ms: 396706
  explicit: false
  by artist: Kayak
  in album: Close To The Fire
    type: MusicAlbum
    date published: 2000-05-24
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLW240600006
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T04:28:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x91463d164a82812fa9c710032e9d08a3c9484eb4380d3b918a10529be08ca059
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956891
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956891
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW240600006
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T07:16:32Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91463d164a82812fa9c710032e9d08a3c9484eb4380d3b918a10529be08ca059. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW240600006.
    date published: 2026-07-06T07:16:32Z
  audio: Frozen Flame
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.984
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.432
    additional property: Energy
      type: PropertyValue
      value: 0.318
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.511
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.215
    additional property: Liveness
      type: PropertyValue
      value: 0.122
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.04
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.34
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Crusader
  type: MusicRecording
  duration: PT4M40S
  duration ms: 280626
  explicit: false
  by artist: Kayak
  in album: Close To The Fire
    type: MusicAlbum
    date published: 2000-05-24
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLW240600003
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T21:26:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8511234157a2a66609fa76537241e932813c57db1d9f9abd3130794f95b1bff5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956738
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956738
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW240600003
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T04:47:21Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8511234157a2a66609fa76537241e932813c57db1d9f9abd3130794f95b1bff5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW240600003.
    date published: 2026-07-05T04:47:21Z
  audio: Crusader
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 93.024
    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: 0.391
    additional property: Energy
      type: PropertyValue
      value: 0.597
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.339
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.023
    additional property: Liveness
      type: PropertyValue
      value: 0.13
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.132
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.018
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major

Close to the Fire
type: MusicAlbum
date published: 2000-12-20

Chance for a live time
type: MusicAlbum
date published: 2001-01-01

Night Vision
type: MusicAlbum
date published: 2001-01-01

Night Vision
type: MusicAlbum
date published: 2001-06-01

Merlin
type: MusicAlbum
date published: 2001-12-01
track: Tintagel
  type: MusicRecording
  duration: PT2M41S
  duration ms: 161000
  explicit: false
  by artist: Kayak
  in album: Merlin
    type: MusicAlbum
    date published: 2001-12-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLW241100002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T19:26:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8b45dc201aa3d93f1bce7aa2944df868b0c98a91f1986585a0940017c7e71f32
  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/NLW241100002
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b45dc201aa3d93f1bce7aa2944df868b0c98a91f1986585a0940017c7e71f32. 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/NLW241100002.
    date published: 2026-07-03T19:59:51Z
  audio: Tintagel
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 115.915
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.424
    additional property: Energy
      type: PropertyValue
      value: 0.2
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.866
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.145
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.286
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.76
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: The King's Enchanter
  type: MusicRecording
  duration: PT2M41S
  duration ms: 161000
  explicit: false
  by artist: Kayak
  in album: Merlin
    type: MusicAlbum
    date published: 2001-12-01
  genre: art rock
  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
  isrc code: NLW241100004
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T13:08:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbb3569053b555c251148927f064b4236e6cd5b5a506f43d809dbfa42756f4cef
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-15T13:14:32Z
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  subject of: OpenTimestamps Proof of Existence
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track: Seagull

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value: https://explorer.copyrightchains.com/tx/0xc6ad767c0eef41ceabbaaf4e5f2394071b1cc29b729138395e4b8f3e1f134829

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ad767c0eef41ceabbaaf4e5f2394071b1cc29b729138395e4b8f3e1f134829. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/NLW241100005.
date published: 2026-07-12T04:18:57Z

Niniane (Lady of the Lake)
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Seagull
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genre: art rock
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subject of: OpenTimestamps Proof of Existence
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Night Vision
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date published: 2001-12-20

3 Originals
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date published: 2003

Merlin - Bard of the Unseen
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Merlin: Bard Of The Unseen
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date published: 2003-02-22

Merlin - Bard Of The Unseen
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date published: 2003-03-01

Nostradamus - The Fate of Man
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date published: 2005-01-01

Nostradamus - The Fate of Man
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date published: 2005-03-27

Nostradamus: The Fate Of Man
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date published: 2005-04-14

Chance for a live time
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date published: 2007

Kayakoustic
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date published: 2007-01-01

KAYAKoustic (Live at Theater 'T Kielzog, Hoogezand-Sappemeer, 23/11/2006)
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date published: 2007-06-01

Kayakoustic
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date published: 2007-12-22

Coming Up for Air
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date published: 2008-01-01

Coming Up For Air
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Coming Up For Air
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Anniversary Concert (Live at Paradiso, Amsterdam, 07/10/2008)
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Coming Up for Air
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date published: 2008-12-20

Letters from Utopia
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Phantom of the Night (Very Best of Kayak)
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date published: 2009-01-01

Phantom Of The Night - The Very Best Of
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date published: 2009-01-01

Phantom Of The Night - The Very Best Of
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Letters from Utopia
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Letters from Utopia
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Anywhere But Here
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Phantom of the Night (Very Best of Kayak)
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date published: 2011-02-07

Merlin - Bard of the Unseen
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Night Vision
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Life Is Good
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Life is good
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date published: 2011-09-07

Anywhere But Here
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Anywhere But Here
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Kayak - The Singles
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date published: 2011-12-09

Kayak - The Singles
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date published: 2011-12-09

Anywhere But Here
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Kayak: Singles, Vol. 2
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Kayak: Singles, Vol. 2
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date published: 2012-03-27

Special 40th Anniversary Release
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Special 40th Anniversary Release
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Cleopatra (The Crown of Isis)
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Eyewitness
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date published: 2014-02-21

Cleopatra The Crown Of Isis
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date published: 2014-10-31

Golden Years Of Dutch Pop Music
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Nostradamus The Fate Of man
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KAYAKoustic - Live
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Letters From Utopia
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The Anniversary Concert - Live in Paradiso
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Cleopatra (The Crown of Isis)
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Ten Best
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Ten Best
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Live Legends In Concert Vol. 32
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Live Legends In Concert Vol. 32
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Cleopatra The Crown Of Isis
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Feathers and Tar
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La Peregrina
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All That I Want
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Seventeen
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  subject of: OpenTimestamps Proof of Existence
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Mystery
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Waiting
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Out of This World
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Out Of This World
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date published: 2021-05-07

Looking Down from My Window
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date published: 2025-01-20
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    date published: 2025-01-20
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  genre: nederpop
  genre: progressive rock
  genre: symphonic rock
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Back to Shore - The 2022 Farewell Tour
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date published: 2025-02-28
track: Daphne - Live
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    date published: 2025-02-28
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  genre: progressive rock
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track: Mammoth - Live
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