Laďka Kozderková
type: MusicGroup
popularity: 13
followers: 1125
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d76fd0409c22b4ceabe86cb55ae416819b1358ab04fe42bac7ad4925e91fb7f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953633
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953633
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32e72b02-388f-4672-bf74-f7c6ae6d970e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32e72b02-388f-4672-bf74-f7c6ae6d970e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/32e72b02-388f-4672-bf74-f7c6ae6d970e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T12:47:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d76fd0409c22b4ceabe86cb55ae416819b1358ab04fe42bac7ad4925e91fb7f","name":"Laďka Kozderková","registered_at":"2026-06-14T09:47:48Z","symbol":"NIM0414684","token_address":"0xfb769dc6cb79d61fbc64e24075ae6d717063e940","type":"artist","uuid":"32e72b02-388f-4672-bf74-f7c6ae6d970e"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d76fd0409c22b4ceabe86cb55ae416819b1358ab04fe42bac7ad4925e91fb7f. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32e72b02-388f-4672-bf74-f7c6ae6d970e.json and https://artists.proofprofile.net/proofs/artist/32e72b02-388f-4672-bf74-f7c6ae6d970e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T12:47:11Z
  text: {"copyright_id":"0x9d76fd0409c22b4ceabe86cb55ae416819b1358ab04fe42bac7ad4925e91fb7f","name":"Laďka Kozderková","registered_at":"2026-06-14T09:47:48Z","symbol":"NIM0414684","token_address":"0xfb769dc6cb79d61fbc64e24075ae6d717063e940","type":"artist","uuid":"32e72b02-388f-4672-bf74-f7c6ae6d970e"}
album: Písničky Na Zábradlí
  type: MusicAlbum
  date published: 2013-08-26
album: Swing & Big Band - To Nejlepší
  type: MusicAlbum
  date published: 2019-02-22
album: Bratislavská Lyra Supraphon, Vol. 1 (1966-1968)
  type: MusicAlbum
  date published: 2015-10-30
album: Děčínská Kotva Supraphon 1
  type: MusicAlbum
  date published: 2014-01-15
album: Československý šanson
  type: MusicAlbum
  date published: 2024-10-18
album: 100 Let S Českou Písničkou Aneb Populární Interpreti Zpívají Dobové Šlágry
  type: MusicAlbum
  date published: 2018-08-31
album: Včera I Dnes (Melodie Jaroslava Maliny)
  type: MusicAlbum
  date published: 2015-08-20
album: Praha Vyhrává (Písničky Z Let 1935-1945)
  type: MusicAlbum
  date published: 1985
album: Praha Tančí (Písničky Z Let 1945-1955)
  type: MusicAlbum
  date published: 2013-05-25
album: Máme Rádi Zvířata (Malá Černá Kočička)
  type: MusicAlbum
  date published: 2015-12-11
album: Tam za tou duhou
  type: MusicAlbum
  date published: 2019-12-02
  track: Znám tu louku voňavou
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216026
    explicit: false
    by artist: Laďka Kozderková
    by artist: Waldemar Matuška
    in album: Tam za tou duhou
      type: MusicAlbum
      date published: 2019-12-02
    isrc code: CZUM71900315
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-18T04:14:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xea67381f6202bd2fb3e1f820b41c14ee71932e4a7cfe61f12fd0d1bb0b1a0d78
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956302
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956302
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900315
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:30:09Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea67381f6202bd2fb3e1f820b41c14ee71932e4a7cfe61f12fd0d1bb0b1a0d78. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900315.
      date published: 2026-07-02T03:30:09Z
    audio: Znám tu louku voňavou
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.607
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 6
      additional property: Danceability
        type: PropertyValue
        value: 0.249
      additional property: Energy
        type: PropertyValue
        value: 0.179
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.934
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.121
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.264
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.796
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Jarní víra
    type: MusicRecording
    duration: PT2M43S
    duration ms: 163986
    explicit: false
    by artist: Laďka Kozderková
    in album: Tam za tou duhou
      type: MusicAlbum
      date published: 2019-12-02
    isrc code: CZA166700274
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-22T06:27:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa4593ce83587dd2aca4a7085a6aee66863a3025b6266519bd9e29fdd6b46dbce
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA166700274
    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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4593ce83587dd2aca4a7085a6aee66863a3025b6266519bd9e29fdd6b46dbce. 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/CZA166700274.
      date published: 2026-07-02T03:55:08Z
    audio: Jarní víra
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.996
      additional property: Musical Key
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Píseň listonošky
album: Bratislavská Lyra Supraphon 2 (1969-1972)
album: Proč písně voní mi loukou (Singly Z Let 1970-1979)
album: Já Už Vím
album: Staropražské Písničky
album: Zlatý Palcát 1985
album: Zpívající Přístavy
album: Václav Hybš A Jeho Hosté
album: Don Špagát
album: To Je Ta Muzika
album: Zlatý palcát 1974

Musical Key
type: PropertyValue
value: 2

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 5

Danceability
type: PropertyValue
value: 0.286

Energy
type: PropertyValue
value: 0.387

Speechiness
type: PropertyValue
value: 0.03

Acousticness
type: PropertyValue
value: 0.823

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.192

Valence (Positivity)
type: PropertyValue
value: 0.511

Loudness (dB)
type: PropertyValue
value: -11.966

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Píseň listonošky
type: MusicRecording
duration: PT2M33S
duration ms: 153279
explicit: false
by artist: Laďka Kozderková
in album: Tam za tou duhou
  type: MusicAlbum
  date published: 2019-12-02
isrc code: CZUM71900340
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T19:22:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4070efad41be9b30ff99a683c694d9d83d14be7c91cefd26cfed0868d94efd2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900340
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4070efad41be9b30ff99a683c694d9d83d14be7c91cefd26cfed0868d94efd2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900340.
  date published: 2026-07-02T03:30:09Z
audio: Píseň listonošky
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.934
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.591
  additional property: Energy
    type: PropertyValue
    value: 0.679
  additional property: Speechiness
    type: PropertyValue
    value: 0.06
  additional property: Acousticness
    type: PropertyValue
    value: 0.017
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.808
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.54
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Bratislavská Lyra Supraphon 2 (1969-1972)
type: MusicAlbum
date published: 2015-11-13

Proč písně voní mi loukou (Singly Z Let 1970-1979)
type: MusicAlbum
date published: 2008-11-15

Já Už Vím
type: MusicAlbum
date published: 2011-11-11

Staropražské Písničky
type: MusicAlbum
date published: 2016-04-22

Zlatý Palcát 1985
type: MusicAlbum
date published: 2015-07-24
track: Vojak To Nemá Ľahké
  type: MusicRecording
  duration: PT2M29S
  duration ms: 149376
  explicit: false
  by artist: Viliam Caino
  in album: Zlatý Palcát 1985
    type: MusicAlbum
    date published: 2015-07-24
  isrc code: CZA160406834
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-21T10:09:24+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x556751818aac7d035a1f29f584e95c99ae13c3b71ea1ba347377e6fc225944c4
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA160406834
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556751818aac7d035a1f29f584e95c99ae13c3b71ea1ba347377e6fc225944c4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA160406834.
    date published: 2026-07-02T03:30:09Z
  audio: Vojak To Nemá Ľahké
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.466
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.558
    additional property: Energy
      type: PropertyValue
      value: 0.585
    additional property: Speechiness
      type: PropertyValue
      value: 0.06
    additional property: Acousticness
      type: PropertyValue
      value: 0.451
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.11
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.819
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.75
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

Zpívající Přístavy
type: MusicAlbum
date published: 2014-05-31

Václav Hybš A Jeho Hosté
type: MusicAlbum
date published: 2014-05-16

Don Špagát
type: MusicAlbum
date published: 2011-11-10

To Je Ta Muzika
type: MusicAlbum
date published: 1981

Zlatý palcát 1974
type: MusicAlbum
date published: 2021-02-12