Kuba Kotek
type: MusicGroup
popularity: 30
followers: 6876
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe51fcf03f121d7070b959023eeb2b5b105fedb010deda0e3f6c32617c3aec869
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/9514c8bc-4407-4d9c-8979-f6fb1500737e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9514c8bc-4407-4d9c-8979-f6fb1500737e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9514c8bc-4407-4d9c-8979-f6fb1500737e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe51fcf03f121d7070b959023eeb2b5b105fedb010deda0e3f6c32617c3aec869","name":"Kuba Kotek","registered_at":"2026-06-12T04:56:16Z","symbol":"NIM0193275","token_address":"0xed4532987e8399d24e90ddf4e8ed6b29c168b37b","type":"artist","uuid":"9514c8bc-4407-4d9c-8979-f6fb1500737e"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51fcf03f121d7070b959023eeb2b5b105fedb010deda0e3f6c32617c3aec869. 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/9514c8bc-4407-4d9c-8979-f6fb1500737e.json and https://artists.proofprofile.net/proofs/artist/9514c8bc-4407-4d9c-8979-f6fb1500737e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xe51fcf03f121d7070b959023eeb2b5b105fedb010deda0e3f6c32617c3aec869","name":"Kuba Kotek","registered_at":"2026-06-12T04:56:16Z","symbol":"NIM0193275","token_address":"0xed4532987e8399d24e90ddf4e8ed6b29c168b37b","type":"artist","uuid":"9514c8bc-4407-4d9c-8979-f6fb1500737e"}
album: Devil Knocking on the Door
  type: MusicAlbum
  date published: 2022-05-19
  track: Devil Knocking on the Door
    type: MusicRecording
    duration: PT4M14S
    duration ms: 254117
    explicit: true
    by artist: Kuba Kotek
    in album: Devil Knocking on the Door
      type: MusicAlbum
      date published: 2022-05-19
    isrc code: SGB502218426
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T13:20:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdb827ec191656e3b6845026f5dadda9e42437bdec1eb7700efe7f9e7763fa5d1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958558
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958558
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SGB502218426
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T13:44:16Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb827ec191656e3b6845026f5dadda9e42437bdec1eb7700efe7f9e7763fa5d1. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/SGB502218426.
      date published: 2026-07-18T13:44:16Z
    audio: Devil Knocking on the Door
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.1
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.739
      additional property: Energy
        type: PropertyValue
        value: 0.49
      additional property: Speechiness
        type: PropertyValue
        value: 0.132
      additional property: Acousticness
        type: PropertyValue
        value: 0.132
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.076
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.645
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.639
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Devil Knocking on the Door
  type: MusicAlbum
  date published: 2022-05-19
album: Devil Knocking on the Door
  type: MusicAlbum
  date published: 2022-05-20
album: Ale Haja!
  type: MusicAlbum
  date published: 2022-11-11
album: Ale Haja!
  type: MusicAlbum
  date published: 2022-11-11
album: Ale Haja! (Acoustic)
  type: MusicAlbum
  date published: 2023-05-05
  track: Ale Haja! - Acoustic
    type: MusicRecording
    duration: PT3M21S
    duration ms: 201325
    explicit: false
    by artist: Kuba Kotek
    in album: Ale Haja! (Acoustic)
      type: MusicAlbum
      date published: 2023-05-05
    isrc code: SGB502362463
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T15:46:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x45d3d1e40ee1d2e5ba9cee047ceb1d8626505c5229bcd13f8309b1e7f94ed094
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956728
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SGB502362463
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d3d1e40ee1d2e5ba9cee047ceb1d8626505c5229bcd13f8309b1e7f94ed094. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGB502362463.
      date published: 2026-07-05T01:43:49Z
    audio: Ale Haja! - Acoustic
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.532
      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: 0.752
      additional property: Energy
        type: PropertyValue
        value: 0.875
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      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
album: Marzenia Me
album: Ale Haja! (Remix)
album: Marzenia Me (Remix)
album: Lało

Acousticness
type: PropertyValue
value: 0.121

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.298

Valence (Positivity)
type: PropertyValue
value: 0.671

Loudness (dB)
type: PropertyValue
value: -5.025

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

Marzenia Me
type: MusicAlbum
date published: 2023-07-28

Ale Haja! (Remix)
type: MusicAlbum
date published: 2023-11-10
track: Ale Haja! - Remix
  type: MusicRecording
  duration: PT4M21S
  duration ms: 261066
  explicit: false
  by artist: Kuba Kotek
  in album: Ale Haja! (Remix)
    type: MusicAlbum
    date published: 2023-11-10
  isrc code: GXBAV2331044
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-14T22:23:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x646621b299a82e8c15183e2c26ea7c4ddb3445998059fac092ff65be5df3defd
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958074
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958074
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXBAV2331044
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-14T22:45:25Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646621b299a82e8c15183e2c26ea7c4ddb3445998059fac092ff65be5df3defd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXBAV2331044.
    date published: 2026-07-14T22:45:25Z
  audio: Ale Haja! - Remix
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 127.993
    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: 0.717
    additional property: Energy
      type: PropertyValue
      value: 0.874
    additional property: Speechiness
      type: PropertyValue
      value: 0.081
    additional property: Acousticness
      type: PropertyValue
      value: 0.002
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.015
    additional property: Liveness
      type: PropertyValue
      value: 0.364
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.179
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.236
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Marzenia Me (Remix)
type: MusicAlbum
date published: 2024-06-23

Lało
type: MusicAlbum
date published: 2024-11-22