Kay.K
type: MusicGroup
popularity: 7
followers: 78
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa563840e0c4262ac21ff6ab0da5e47325bd22bbf76e6185b7f61d50aad3c9865
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0642583-a088-4926-8969-d20a3a11cf5e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0642583-a088-4926-8969-d20a3a11cf5e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b0642583-a088-4926-8969-d20a3a11cf5e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
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 0xa563840e0c4262ac21ff6ab0da5e47325bd22bbf76e6185b7f61d50aad3c9865. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0642583-a088-4926-8969-d20a3a11cf5e.json and https://artists.proofprofile.net/proofs/artist/b0642583-a088-4926-8969-d20a3a11cf5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
album: Bandyta bez tatuaży
  type: MusicAlbum
  date published: 2022-05-20
album: Flex
  type: MusicAlbum
  date published: 2023-06-09
album: WHERE U BEEN???
  type: MusicAlbum
  date published: 2024-04-19
album: OD ZAWSZE CHCIAŁEM UMIEĆ LATAĆ
  type: MusicAlbum
  date published: 2024-08-16
album: DESTINED4GREATNESS
  type: MusicAlbum
  date published: 2024-09-06
album: HUNGRY4theRACKS
  type: MusicAlbum
  date published: 2024-09-20
album: WITH ME
  type: MusicAlbum
  date published: 2024-12-30
album: POZNASZ MNIE PO KROKACH
  type: MusicAlbum
  date published: 2025-02-28
  track: POZNASZ MNIE PO KROKACH
    type: MusicRecording
    duration: PT1M54S
    duration ms: 114032
    explicit: false
    by artist: Kay.K
    in album: POZNASZ MNIE PO KROKACH
      type: MusicAlbum
      date published: 2025-02-28
    isrc code: PLC062510576
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T15:18:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa474fbbfd28e567d3891ccd97c283ff1af900d3b2760a6867eb17420bb1ef1ab
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958300
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958300
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062510576
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:14:30Z
    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 0xa474fbbfd28e567d3891ccd97c283ff1af900d3b2760a6867eb17420bb1ef1ab. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLC062510576.
      date published: 2026-07-16T16:14:30Z
    audio: POZNASZ MNIE PO KROKACH
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 174.989
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.68
      additional property: Energy
        type: PropertyValue
        value: 0.653
      additional property: Speechiness
        type: PropertyValue
        value: 0.169
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.185
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.407
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.943
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: OVER (alright)
  type: MusicAlbum
  date published: 2025-05-20
album: OVER EP
  type: MusicAlbum
  date published: 2025-05-23
album: JESTEM PONAD
  type: MusicAlbum
  date published: 2025-07-18
album: XYZ
  type: MusicAlbum
  date published: 2025-08-23