Golem Jana Václavíka
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followers: 88
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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 → 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef028317f334a5326092d1cb6f95c41767d7cfc7b55713501795abd2e5074c3b. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d5bae69-3dc9-4543-9255-0712336cd50a.json and https://artists.proofprofile.net/proofs/artist/0d5bae69-3dc9-4543-9255-0712336cd50a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T06:40:11Z
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album: Praha Je Písnička 2
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  date published: 2018-11-09
  track: Pohled S Petřína
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  track: Staroměstské Uličky
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  track: Nad Prahou Tančily Hvězdičky
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  track: Když Nad Prahou Se Večer Uklání
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  track: Znám Jedno Město
  track: Jede Tramvaj Babička
  track: Jásejme, Pražané
  track: Cestu Znám
  track: Mám Tě Ráda
  track: Má Praho
  track: Proveďte Mě Prahou
  track: Karlínský Nábřeží
  track: Básník Nesmělý
  track: Město
  track: Báseň Skoro Na Rozloučenou
  track: Soumrak Je Hříšný Básník
  track: Letní Noc
  track: Na Václavském Náměstí
  track: Prahou Když Bloudím Sám
  track: O Praze Sním
  track: Kavárna Snů
  track: Mé Město Už Vstává
  track: Zlatou Uličkou
  track: Dovolená V Praze
  track: Sloky O Praze
album: Go-Go Golem
album: Kde Se Pára Vaří
album: Důvěrně Známý
album: Singly (1975-1988)
album: Gong Č. 7
album: Aerobic (Kondiční Gymnastika)
album: High Life Instrumental

Josef Zíma
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Praha Je Písnička 2
type: MusicAlbum
date published: 2018-11-09

Když Nad Prahou Se Večer Uklání
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Znám Jedno Město
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Jede Tramvaj Babička
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Jásejme, Pražané
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Cestu Znám
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Mám Tě Ráda
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Má Praho
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Proveďte Mě Prahou
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Karlínský Nábřeží
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Básník Nesmělý
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Město
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Báseň Skoro Na Rozloučenou
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Soumrak Je Hříšný Básník
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Letní Noc
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Na Václavském Náměstí
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Prahou Když Bloudím Sám
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O Praze Sním
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Kavárna Snů
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Mé Město Už Vstává
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Zlatou Uličkou
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Dovolená V Praze
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Sloky O Praze
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Go-Go Golem
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track: Go-Go Golem, Pt. 1
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track: Boogie Down
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track: Question Time
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track: Memphis, Tennessee
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track: Your Eyes
track: Club Tropicana
track: Go-Go Golem, Pt. 2
track: Puppet on a String
track: Getting Old
track: The Sparrows Are Flying
track: Wake Me up Before You Go
track: I.Q.
track: Kansas City
track: Go-Go Golem, Pt. 3

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Your Eyes
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Club Tropicana
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Go-Go Golem, Pt. 2
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Puppet on a String
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Getting Old
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The Sparrows Are Flying
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Wake Me up Before You Go
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I.Q.
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Kansas City
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Go-Go Golem, Pt. 3
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Kde Se Pára Vaří
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Schůzka Muzikantů
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Dům Č. 5
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Vím, Že Na To Nemám
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Vyprávěj
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Jen Tak Zapomenout
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duration ms: 215578
explicit: false
by artist: Golem Jana Václavíka
in album: Kde Se Pára Vaří
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audio: Jen Tak Zapomenout
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  additional property: Time Signature
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.072
  additional property: Acousticness
    type: PropertyValue
    value: 0.884
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0.215
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.147
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.512
  additional property: Key Name
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    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Důvěrně Známý
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date published: 1970-01-01
track: Když Si Dáme Rock'N'Roll
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  duration ms: 192624
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  by artist: Josef Laufer
  by artist: Golem Jana Václavíka
  in album: Důvěrně Známý
    type: MusicAlbum
    date published: 1970-01-01
  audio: Když Si Dáme Rock'N'Roll
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 172.413
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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      value: 0.287
    additional property: Valence (Positivity)
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      value: 0.623
    additional property: Loudness (dB)
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      value: -11.4
    additional property: Key Name
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track: Ať To Múzy Proberou
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  by artist: Golem Jana Václavíka
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    type: MusicAlbum
    date published: 1970-01-01
  audio: Ať To Múzy Proberou
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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      value: 9
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
      value: 0.683
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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      value: A
    additional property: Mode Name
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track: Málo Platný
  type: MusicRecording
  duration: PT2M56S
  duration ms: 176805
  explicit: false
  by artist: Josef Laufer
  by artist: Golem Jana Václavíka
  in album: Důvěrně Známý
    type: MusicAlbum
    date published: 1970-01-01
  audio: Málo Platný
    type: AudioObject
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
      type: PropertyValue
      value: 0.749
    additional property: Energy
      type: PropertyValue
      value: 0.476
    additional property: Speechiness
      type: PropertyValue
      value: 0.146
    additional property: Acousticness
      type: PropertyValue
      value: 0.548
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.004
    additional property: Liveness
      type: PropertyValue
      value: 0.3
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.844
    additional property: Loudness (dB)
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      value: -16.018
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
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      value: Major
track: Už Je To Pár Dní
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  duration: PT4M25S
  duration ms: 265437
  explicit: false
  by artist: Josef Laufer
  by artist: Golem Jana Václavíka
  in album: Důvěrně Známý
    type: MusicAlbum
    date published: 1970-01-01
  isrc code: CZA168300941
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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    value: https://blockstream.info/api/block/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168300941
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 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
  audio: Už Je To Pár Dní
track: Dívka Z Polesí
track: Sbohem, Lásko, Já Jedu Dál
track: Superman
track: Známej Klan
track: Zabloudil Bych Rád A Náhle
track: Jak Se Pluje Duhou
track: Lola
track: Důvěrně Známý

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19de2154bc0d2123c33f9ab28e8ac147ceeb28f51cb1c5bdbb16f7cfe77dbdf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168300941.
date published: 2026-07-08T03:22:41Z

Už Je To Pár Dní
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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  value: -15.755
additional property: Key Name
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additional property: Mode Name
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Dívka Z Polesí
type: MusicRecording
duration: PT2M52S
duration ms: 172013
explicit: false
by artist: Josef Laufer
by artist: Golem Jana Václavíka
in album: Důvěrně Známý
  type: MusicAlbum
  date published: 1970-01-01
audio: Dívka Z Polesí
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.765
  additional property: Energy
    type: PropertyValue
    value: 0.553
  additional property: Speechiness
    type: PropertyValue
    value: 0.179
  additional property: Acousticness
    type: PropertyValue
    value: 0.279
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.052
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.891
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.407
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
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Sbohem, Lásko, Já Jedu Dál
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duration: PT3M32S
duration ms: 212240
explicit: false
by artist: Josef Laufer
by artist: Golem Jana Václavíka
in album: Důvěrně Známý
  type: MusicAlbum
  date published: 1970-01-01
isrc code: CZA168300943
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T05:34:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xec1ce08fc4697d0b65bdabebbdb6adf6c6430045e1a6f1479637f523ff0d4451
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168300943
additional property: OTSTimestamp
  type: PropertyValue
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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 → block OTSBitcoinBlock must exist at that height 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 0xec1ce08fc4697d0b65bdabebbdb6adf6c6430045e1a6f1479637f523ff0d4451. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZA168300943.
  date published: 2026-06-13T15:41:10Z
audio: Sbohem, Lásko, Já Jedu Dál
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  additional property: Speechiness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.495
  additional property: Key Name
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Superman
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duration: PT4M0S
duration ms: 240866
explicit: false
by artist: Josef Laufer
by artist: Golem Jana Václavíka
in album: Důvěrně Známý
  type: MusicAlbum
  date published: 1970-01-01
isrc code: CZA168300944
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
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957122
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168300944
additional property: OTSTimestamp
  type: PropertyValue
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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 → block OTSBitcoinBlock must exist at that height 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 0x0d13e1701d687406896d9ed46b9ab91d066ea33e9d47a26cb74c21897d302ece. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168300944.
  date published: 2026-07-08T03:39:04Z
audio: Superman
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.661
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.39
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
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Známej Klan
type: MusicRecording
duration: PT3M57S
duration ms: 237564
explicit: false
by artist: Josef Laufer
by artist: Golem Jana Václavíka
in album: Důvěrně Známý
  type: MusicAlbum
  date published: 1970-01-01
audio: Známej Klan
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.732
  additional property: Energy
    type: PropertyValue
    value: 0.674
  additional property: Speechiness
    type: PropertyValue
    value: 0.087
  additional property: Acousticness
    type: PropertyValue
    value: 0.435
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0.156
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.852
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.501
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Zabloudil Bych Rád A Náhle
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duration: PT3M15S
duration ms: 195706
explicit: false
by artist: Josef Laufer
by artist: Golem Jana Václavíka
in album: Důvěrně Známý
  type: MusicAlbum
  date published: 1970-01-01
isrc code: CZA168300945
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:38:32+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
  value: https://blockstream.info/api/block/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168300945
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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 → block OTSBitcoinBlock must exist at that height 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 0xad568c0d5a6d3082c407e02613616f529b661ec030f7661febebff0b779e21fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CZA168300945.
  date published: 2026-07-08T03:53:27Z
audio: Zabloudil Bych Rád A Náhle
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  additional property: Musical Key
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  additional property: Danceability
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Jak Se Pluje Duhou
type: MusicRecording
duration: PT4M13S
duration ms: 253397
explicit: false
by artist: Josef Laufer
by artist: Golem Jana Václavíka
in album: Důvěrně Známý
  type: MusicAlbum
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audio: Jak Se Pluje Duhou
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.35
  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Lola
type: MusicRecording
duration: PT2M53S
duration ms: 173013
explicit: false
by artist: Josef Laufer
by artist: Golem Jana Václavíka
in album: Důvěrně Známý
  type: MusicAlbum
  date published: 1970-01-01
isrc code: CZA168300948
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168300948
additional property: OTSTimestamp
  type: PropertyValue
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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 → block OTSBitcoinBlock must exist at that height 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 0x65a17e24358f648dd62ca06dcebb6c1435077a369b1ff747d30c58e7f0b64328. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CZA168300948.
  date published: 2026-07-08T03:53:27Z
audio: Lola
  type: AudioObject
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.229
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0.046
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.968
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.893
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
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Důvěrně Známý
type: MusicRecording
duration: PT3M17S
duration ms: 197906
explicit: false
by artist: Josef Laufer
by artist: Golem Jana Václavíka
in album: Důvěrně Známý
  type: MusicAlbum
  date published: 1970-01-01
audio: Důvěrně Známý
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.278
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.81
  additional property: Energy
    type: PropertyValue
    value: 0.576
  additional property: Speechiness
    type: PropertyValue
    value: 0.11
  additional property: Acousticness
    type: PropertyValue
    value: 0.031
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.113
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.505
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.083
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Singly (1975-1988)
type: MusicAlbum
date published: 2019-08-09
track: Tři holky mám
  type: MusicRecording
  duration: PT2M33S
  duration ms: 153772
  explicit: false
  by artist: Josef Laufer
  in album: Singly (1975-1988)
    type: MusicAlbum
    date published: 2019-08-09
  audio: Tři holky mám
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.909
    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: 0.733
    additional property: Energy
      type: PropertyValue
      value: 0.707
    additional property: Speechiness
      type: PropertyValue
      value: 0.108
    additional property: Acousticness
      type: PropertyValue
      value: 0.284
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.002
    additional property: Liveness
      type: PropertyValue
      value: 0.09
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.923
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.326
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Juliána
  type: MusicRecording
  duration: PT3M44S
  duration ms: 224120
  explicit: false
  by artist: Josef Laufer
  by artist: Hana Buštíková
  by artist: Jana Giergielová
  in album: Singly (1975-1988)
    type: MusicAlbum
    date published: 2019-08-09
  isrc code: CZA167500025
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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    value: 2026-07-07T16:34:28+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x1d137d39738efbd32b532cef32ffcc96f54f19332659d70dc614379bb333b10a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167500025
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 → block OTSBitcoinBlock must exist at that height 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 0x1d137d39738efbd32b532cef32ffcc96f54f19332659d70dc614379bb333b10a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZA167500025.
    date published: 2026-07-08T08:56:20Z
  audio: Juliána
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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      value: 2
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
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      value: -14.692
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
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track: Nejhezčí dívka
  type: MusicRecording
  duration: PT2M39S
  duration ms: 159371
  explicit: false
  by artist: Josef Laufer
  in album: Singly (1975-1988)
    type: MusicAlbum
    date published: 2019-08-09
  audio: Nejhezčí dívka
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 203.814
    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: 0.405
    additional property: Energy
      type: PropertyValue
      value: 0.486
    additional property: Speechiness
      type: PropertyValue
      value: 0.058
    additional property: Acousticness
      type: PropertyValue
      value: 0.145
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.005
    additional property: Liveness
      type: PropertyValue
      value: 0.146
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.604
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.961
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Tak už jsem boty zul
  type: MusicRecording
  duration: PT3M26S
  duration ms: 206302
  explicit: false
  by artist: Josef Laufer
  in album: Singly (1975-1988)
  isrc code: CZA167700809
  audio: Tak už jsem boty zul
track: Veselka
track: Divoška
track: Ďábel diskoték
track: Pásek mi dej
track: Je mi sedmnáct
track: Roky pádí
track: Tango pro starou lady
track: Kalimero
track: Hudba to je můj pán
track: Rub a líc - polní tráva
track: Kouzelná show
track: Boogie
track: Málo platný
track: Sbohem, lásko, já jedu dál
track: Suverén
track: Co chtěl jsem, to mám
track: Honza majer
track: La bamba
track: Holka jako hrom

Singly (1975-1988)
type: MusicAlbum
date published: 2019-08-09

Tak už jsem boty zul
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 135.86
additional property: Musical Key
  type: PropertyValue
  value: 5
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.806
additional property: Energy
  type: PropertyValue
  value: 0.494
additional property: Speechiness
  type: PropertyValue
  value: 0.045
additional property: Acousticness
  type: PropertyValue
  value: 0.076
additional property: Instrumentalness
  type: PropertyValue
  value: 0.616
additional property: Liveness
  type: PropertyValue
  value: 0.064
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.966
additional property: Loudness (dB)
  type: PropertyValue
  value: -18.289
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Minor

Veselka
type: MusicRecording
duration: PT2M32S
duration ms: 152650
explicit: false
by artist: Josef Laufer
in album: Singly (1975-1988)
  type: MusicAlbum
  date published: 2019-08-09
audio: Veselka
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.685
  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: 0.685
  additional property: Energy
    type: PropertyValue
    value: 0.729
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.096
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.053
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.793
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.895
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Divoška
type: MusicRecording
duration: PT2M46S
duration ms: 166337
explicit: false
by artist: Josef Laufer
in album: Singly (1975-1988)
  type: MusicAlbum
  date published: 2019-08-09
audio: Divoška
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.821
  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: 0.812
  additional property: Energy
    type: PropertyValue
    value: 0.63
  additional property: Speechiness
    type: PropertyValue
    value: 0.09
  additional property: Acousticness
    type: PropertyValue
    value: 0.149
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.074
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.813
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.103
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ďábel diskoték
type: MusicRecording
duration: PT3M6S
duration ms: 186002
explicit: false
by artist: Josef Laufer
in album: Singly (1975-1988)
  type: MusicAlbum
  date published: 2019-08-09
isrc code: CZA167800606
audio: Ďábel diskoték
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.57
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.655
  additional property: Energy
    type: PropertyValue
    value: 0.699
  additional property: Speechiness
    type: PropertyValue
    value: 0.083
  additional property: Acousticness
    type: PropertyValue
    value: 0.052
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.962
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.667
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Pásek mi dej
type: MusicRecording
duration: PT3M22S
duration ms: 202508
explicit: false
by artist: Josef Laufer
in album: Singly (1975-1988)
  type: MusicAlbum
  date published: 2019-08-09
isrc code: CZA167900480
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T12:06:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x304f6883065918dc07a8220a112f791a59135f4c2a9229eb5d126db7825d6462
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167900480
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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 → block OTSBitcoinBlock must exist at that height 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 0x304f6883065918dc07a8220a112f791a59135f4c2a9229eb5d126db7825d6462. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CZA167900480.
  date published: 2026-07-02T03:55:08Z
audio: Pásek mi dej
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.613
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.099
  additional property: Acousticness
    type: PropertyValue
    value: 0.084
  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.756
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.867
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Je mi sedmnáct
type: MusicRecording
duration: PT4M10S
duration ms: 250215
explicit: false
by artist: Josef Laufer
in album: Singly (1975-1988)
  type: MusicAlbum
  date published: 2019-08-09
audio: Je mi sedmnáct
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.754
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.561
  additional property: Energy
    type: PropertyValue
    value: 0.607
  additional property: Speechiness
    type: PropertyValue
    value: 0.17
  additional property: Acousticness
    type: PropertyValue
    value: 0.306
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.031
  additional property: Liveness
    type: PropertyValue
    value: 0.113
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.714
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.43
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Roky pádí
type: MusicRecording
duration: PT3M4S
duration ms: 184920
explicit: false
by artist: Josef Laufer
in album: Singly (1975-1988)
  type: MusicAlbum
  date published: 2019-08-09
audio: Roky pádí
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.181
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.765
  additional property: Energy
    type: PropertyValue
    value: 0.518
  additional property: Speechiness
    type: PropertyValue
    value: 0.108
  additional property: Acousticness
    type: PropertyValue
    value: 0.051
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.797
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.857
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Tango pro starou lady
type: MusicRecording
duration: PT2M45S
duration ms: 165093
explicit: false
by artist: Josef Laufer
in album: Singly (1975-1988)
  type: MusicAlbum
  date published: 2019-08-09
isrc code: CZA167900717
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:08:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x625fc437f145914ff286b32cb3d4a63c88afea0a5631ac6a4d35505f2e570cb3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167900717
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 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 0x625fc437f145914ff286b32cb3d4a63c88afea0a5631ac6a4d35505f2e570cb3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167900717.
  date published: 2026-07-08T03:20:19Z
audio: Tango pro starou lady
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    type: PropertyValue
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.295
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Kalimero
type: MusicRecording
duration: PT4M37S
duration ms: 277427
explicit: false
by artist: Josef Laufer
by artist: Jiřina Bohdalová
by artist: Golem Jana Václavíka
by artist: Pražské smyčce Jana Hrábka
in album: Singly (1975-1988)
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Rub a líc - polní tráva
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Boogie
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Málo platný
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Sbohem, lásko, já jedu dál
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Suverén
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Co chtěl jsem, to mám
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Honza majer
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La bamba
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Holka jako hrom
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Gong Č. 7
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Nádherná Krásko
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Chvíli, Jen Chvíli
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Gloria
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Noc Plachých Milenců
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Úsměv Medový
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Posílám Barevnou Obálku
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Máš Se Vdát
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Asteria
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Balada Pro Adélku
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Aerobic (Kondiční Gymnastika)
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track: Riky Šejk
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track: Chariots Of Fire
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track: Talisman
track: Gracie
track: Bubnový Tanec I.
track: The Goldie Oldie Rock'n'roll
track: Aerobic Medley
track: Bubnový Tanec II.
track: Téma Snových Lásek

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Talisman
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Gracie
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Bubnový Tanec I.
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The Goldie Oldie Rock'n'roll
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Aerobic Medley
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Bubnový Tanec II.
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Téma Snových Lásek
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High Life Instrumental
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date published: 2013-11-18
track: Love's Theme
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track: Rilay Sheila
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track: Angel of Mine
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track: Deep Purple
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track: Endless Love
track: Beyond the Reef
track: Disillusionment
track: Twilight Time
track: Dance Little Bird
track: Bilitis
track: Hodinám, Které Přijdou
track: Chariots of Fire

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Endless Love
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Beyond the Reef
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by artist: Pavel Větrovec
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Disillusionment
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Twilight Time
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Dance Little Bird
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duration: PT2M31S
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by artist: Buřinky a Berušky Petra Dudeška
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Bilitis
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Hodinám, Které Přijdou
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Chariots of Fire
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duration: PT3M36S
duration ms: 216610
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by artist: Vladimir Popelka
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