Čajkovski
type: MusicGroup
popularity: 20
followers: 6630
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5f91b46fe6b37e9462ae7dcfa859556549812eada6985f572c2504f4c14bab5b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953724
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953724
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8d63c3b6-868a-43e2-88d9-71dbca1722d0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8d63c3b6-868a-43e2-88d9-71dbca1722d0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8d63c3b6-868a-43e2-88d9-71dbca1722d0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:43:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5f91b46fe6b37e9462ae7dcfa859556549812eada6985f572c2504f4c14bab5b","name":"Čajkovski","registered_at":"2026-06-14T19:20:43Z","symbol":"NIM0551357","token_address":"0xd9e5b68f6e8e394a466b727de40c1deaf391f198","type":"artist","uuid":"8d63c3b6-868a-43e2-88d9-71dbca1722d0"}
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 0x5f91b46fe6b37e9462ae7dcfa859556549812eada6985f572c2504f4c14bab5b. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d63c3b6-868a-43e2-88d9-71dbca1722d0.json and https://artists.proofprofile.net/proofs/artist/8d63c3b6-868a-43e2-88d9-71dbca1722d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:43:13Z
  text: {"copyright_id":"0x5f91b46fe6b37e9462ae7dcfa859556549812eada6985f572c2504f4c14bab5b","name":"Čajkovski","registered_at":"2026-06-14T19:20:43Z","symbol":"NIM0551357","token_address":"0xd9e5b68f6e8e394a466b727de40c1deaf391f198","type":"artist","uuid":"8d63c3b6-868a-43e2-88d9-71dbca1722d0"}
album: Úplně nej
  type: MusicAlbum
  date published: 2017-11-09
album: Úplně nej
  type: MusicAlbum
  date published: 2017-11-09
album: Zamilovaná
  type: MusicAlbum
  date published: 2018-10-31
album: Zamilovaná
  type: MusicAlbum
  date published: 2018-10-31
album: Světla
  type: MusicAlbum
  date published: 2018-12-20
album: Světla
  type: MusicAlbum
  date published: 2018-12-20
album: Last
  type: MusicAlbum
  date published: 2019-03-29
  track: Nechci bejt zadanej
    type: MusicRecording
    duration: PT3M17S
    duration ms: 197114
    explicit: false
    by artist: Čajkovski
    in album: Last
      type: MusicAlbum
      date published: 2019-03-29
    isrc code: CZA231900150
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T19:39:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1794cd1b9e84bbbe2e186344ba6d00a47c255e353dba81377cfdd723a1ab7d65
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958931
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958931
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231900150
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:15:01Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x1794cd1b9e84bbbe2e186344ba6d00a47c255e353dba81377cfdd723a1ab7d65. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231900150.
      date published: 2026-07-20T21:15:01Z
    audio: Nechci bejt zadanej
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.668
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.819
      additional property: Energy
        type: PropertyValue
        value: 0.49
      additional property: Speechiness
        type: PropertyValue
        value: 0.187
      additional property: Acousticness
        type: PropertyValue
        value: 0.05
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.127
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.363
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.179
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Cukrová vata
  type: MusicAlbum
  date published: 2019-05-03
album: Nonstop vybitej
  type: MusicAlbum
  date published: 2019-05-24
album: Bordel v hlavě
  type: MusicAlbum
  date published: 2019-07-12
album: Broke Boy Story
  type: MusicAlbum
  date published: 2019-09-13
album: Broke Boy Stories
  type: MusicAlbum
  date published: 2019-12-12
  track: Broke Boy Story
    type: MusicRecording
    duration: PT2M40S
    duration ms: 160326
    explicit: false
    by artist: Čajkovski
    in album: Broke Boy Stories
      type: MusicAlbum
      date published: 2019-12-12
    isrc code: CZA231900418
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T09:30:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x85aa375776d6e2b4e27d162590d5674ab0959c503027b92f1c7097e9cbb67146
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958390
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958390
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231900418
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T09:35:49Z
    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 0x85aa375776d6e2b4e27d162590d5674ab0959c503027b92f1c7097e9cbb67146. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/CZA231900418.
      date published: 2026-07-17T09:35:49Z
    audio: Broke Boy Story
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.953
      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: Sorry bejby musím jít
album: Nejsem sám
album: Květy

Musical Key
type: PropertyValue
value: 8

Mode (Major/Minor)
type: PropertyValue
value: 0

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.806

Energy
type: PropertyValue
value: 0.428

Speechiness
type: PropertyValue
value: 0.087

Acousticness
type: PropertyValue
value: 0.66

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.123

Valence (Positivity)
type: PropertyValue
value: 0.379

Loudness (dB)
type: PropertyValue
value: -10.852

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Minor

Sorry bejby musím jít
type: MusicRecording
duration: PT3M46S
duration ms: 226000
explicit: true
by artist: Čajkovski
in album: Broke Boy Stories
  type: MusicAlbum
  date published: 2019-12-12
isrc code: CZA231900599
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T10:37:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4f5287dc9ff576b2564811bd98b9cadd278033ab0d70b1d3c88899a8b7df6994
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956822
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956822
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231900599
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T18:48:28Z
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 0x4f5287dc9ff576b2564811bd98b9cadd278033ab0d70b1d3c88899a8b7df6994. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CZA231900599.
  date published: 2026-07-05T18:48:28Z
audio: Sorry bejby musím jít
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.966
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.803
  additional property: Energy
    type: PropertyValue
    value: 0.494
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.274
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.089
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.109
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.767
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Nejsem sám
type: MusicAlbum
date published: 2020-02-24
track: Nejsem sám
  type: MusicRecording
  duration: PT3M15S
  duration ms: 195567
  explicit: false
  by artist: Čajkovski
  in album: Nejsem sám
    type: MusicAlbum
    date published: 2020-02-24
  isrc code: CZA232000111
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T20:16:24+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe994f030200fedf638fcf79978eb616e59eab2bc095e68e925ad69bd9f99adf0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956725
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956725
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA232000111
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:12:41Z
  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 → 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 0xe994f030200fedf638fcf79978eb616e59eab2bc095e68e925ad69bd9f99adf0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZA232000111.
    date published: 2026-07-05T01:12:41Z
  audio: Nejsem sám
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 107.943
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.702
    additional property: Energy
      type: PropertyValue
      value: 0.345
    additional property: Speechiness
      type: PropertyValue
      value: 0.068
    additional property: Acousticness
      type: PropertyValue
      value: 0.746
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.085
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.146
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.97
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Květy
type: MusicAlbum
date published: 2021-05-28
track: Poslední tanec
  type: MusicRecording
  duration: PT2M48S
  duration ms: 168200
  explicit: true
  by artist: Čajkovski
  in album: Květy
    type: MusicAlbum
    date published: 2021-05-28
  isrc code: CZA232100359
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T00:03:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1fba61f3da45ed23e1cf768886fc8626049d6fe88bc2948647eecf08fa414fcd
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956856
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956856
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA232100359
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:25:57Z
  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 0x1fba61f3da45ed23e1cf768886fc8626049d6fe88bc2948647eecf08fa414fcd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA232100359.
    date published: 2026-07-06T01:25:57Z
  audio: Poslední tanec
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 160.063
    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: 0.62
    additional property: Energy
      type: PropertyValue
      value: 0.526
    additional property: Speechiness
      type: PropertyValue
      value: 0.162
    additional property: Acousticness
      type: PropertyValue
      value: 0.597
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.112
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.131
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.709
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major