David Kraus
type: MusicGroup
popularity: 29
followers: 1791
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdbf48ca8ea99f966286a8de57bfa80b86b988c7a335cf2e31d440d1b162f712e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b67ca4e-6918-4d18-bb7c-f73c1db2dd3a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b67ca4e-6918-4d18-bb7c-f73c1db2dd3a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b67ca4e-6918-4d18-bb7c-f73c1db2dd3a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdbf48ca8ea99f966286a8de57bfa80b86b988c7a335cf2e31d440d1b162f712e","name":"David Kraus","registered_at":"2026-06-11T14:57:07Z","symbol":"NIM0056005","token_address":"0x5a2f4ad2fe3cb90a3ff8d5510e3907a8b0bca6e7","type":"artist","uuid":"2b67ca4e-6918-4d18-bb7c-f73c1db2dd3a"}
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 0xdbf48ca8ea99f966286a8de57bfa80b86b988c7a335cf2e31d440d1b162f712e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b67ca4e-6918-4d18-bb7c-f73c1db2dd3a.json and https://artists.proofprofile.net/proofs/artist/2b67ca4e-6918-4d18-bb7c-f73c1db2dd3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xdbf48ca8ea99f966286a8de57bfa80b86b988c7a335cf2e31d440d1b162f712e","name":"David Kraus","registered_at":"2026-06-11T14:57:07Z","symbol":"NIM0056005","token_address":"0x5a2f4ad2fe3cb90a3ff8d5510e3907a8b0bca6e7","type":"artist","uuid":"2b67ca4e-6918-4d18-bb7c-f73c1db2dd3a"}
album: wwwdavidkraus.org
  type: MusicAlbum
  date published: 2002-04-15
  track: Zuzana
    type: MusicRecording
    duration: PT5M34S
    duration ms: 334800
    explicit: false
    by artist: David Kraus
    in album: wwwdavidkraus.org
      type: MusicAlbum
      date published: 2002-04-15
    isrc code: CZA140200088
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T06:27:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x43fe6bdf3e55a64eb37ee7b4e7764d743e375649c42613688b3a6ff2c8524863
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958256
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958256
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA140200088
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T07:22:18Z
    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 0x43fe6bdf3e55a64eb37ee7b4e7764d743e375649c42613688b3a6ff2c8524863. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CZA140200088.
      date published: 2026-07-16T07:22:18Z
    audio: Zuzana
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.095
      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: 0.71
      additional property: Energy
        type: PropertyValue
        value: 0.548
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.017
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.003
      additional property: Liveness
        type: PropertyValue
        value: 0.066
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.473
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.033
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Cukrarna
  type: MusicAlbum
  date published: 2011-09-15
album: Nádherná
  type: MusicAlbum
  date published: 2016-05-20
album: Pod Vodou Jsme Bílí (feat. The Gipsy Brothers)
  type: MusicAlbum
  date published: 2017-09-21
album: Touha
  type: MusicAlbum
  date published: 2022-09-12
track: Pouhý známý
  type: MusicRecording
  duration: PT3M44S
  duration ms: 224133
  explicit: false
  by artist: Jitka Zelenková
  by artist: David Kraus
  by artist: Lev Alexandrovič Rybalkin
  by artist: Ivan Korený
  by artist: František Raba
  by artist: Martin Linhart
  by artist: Unique Quartet
  in album: Best of
    type: MusicAlbum
    date published: 2020-05-29
  genre: classic-czech-pop
  isrc code: CZA161801072
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T03:42:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4436b3a9db4f4fe85c5a8e1a376c242eefd76622315d736c7137cfa2ec3657a3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161801072
  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 → 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 0x4436b3a9db4f4fe85c5a8e1a376c242eefd76622315d736c7137cfa2ec3657a3. 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/CZA161801072.
    date published: 2026-07-08T03:20:19Z
  audio: Pouhý známý
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 115.043
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.521
    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: Protože to nevzdám

Energy
type: PropertyValue
value: 0.5

Speechiness
type: PropertyValue
value: 0.03

Acousticness
type: PropertyValue
value: 0.533

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.138

Valence (Positivity)
type: PropertyValue
value: 0.368

Loudness (dB)
type: PropertyValue
value: -12.365

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Major

Protože to nevzdám
type: MusicRecording
duration: PT3M26S
duration ms: 206436
explicit: false
by artist: Olga Lounova
by artist: Anna Šulcová
by artist: Bára Basiková
by artist: David Kraus
by artist: Earth
by artist: Elis Mraz
by artist: Katarina Knechtova
by artist: Marta Kubišová
by artist: Petr Kolář
by artist: Poetika
by artist: Richard Krajčo
by artist: Sebastian
by artist: Tereza Mašková
by artist: Pavel Callta
in album: Protože to nevzdám
  type: MusicAlbum
  date published: 2019-09-25
isrc code: CZK101900022
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T13:20:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x45cdd3855a782070991d383da4e6913feadc5b5374ee54dd6ef5454f3ad36873
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZK101900022
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
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 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 0x45cdd3855a782070991d383da4e6913feadc5b5374ee54dd6ef5454f3ad36873. 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/CZK101900022.
  date published: 2026-06-13T15:41:10Z
audio: Protože to nevzdám
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 170.053
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.56
  additional property: Energy
    type: PropertyValue
    value: 0.719
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.005
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.178
  additional property: Loudness (dB)
    type: PropertyValue
    value: -5.983
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major