Hejvl
type: MusicGroup
popularity: 4
followers: 262
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a65c8237352809fffc90e8d0684eac16cc5843106fa18ed40cf59236655b491
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95df5f66-a7e6-4731-af08-f2ae9905ff1f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95df5f66-a7e6-4731-af08-f2ae9905ff1f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/95df5f66-a7e6-4731-af08-f2ae9905ff1f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
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 0x5a65c8237352809fffc90e8d0684eac16cc5843106fa18ed40cf59236655b491. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95df5f66-a7e6-4731-af08-f2ae9905ff1f.json and https://artists.proofprofile.net/proofs/artist/95df5f66-a7e6-4731-af08-f2ae9905ff1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: Ice Cold
  type: MusicAlbum
  date published: 2022-08-02
album: Fajn
  type: MusicAlbum
  date published: 2022-08-24
album: Youngsta
  type: MusicAlbum
  date published: 2022-09-21
album: Youngsta REMIX
  type: MusicAlbum
  date published: 2022-10-26
album: Flip
  type: MusicAlbum
  date published: 2022-12-08
album: Switch
  type: MusicAlbum
  date published: 2023-02-13
album: WAKE UP
  type: MusicAlbum
  date published: 2023-05-17
album: V Hajzlu
  type: MusicAlbum
  date published: 2023-06-26
album: FRESH
  type: MusicAlbum
  date published: 2023-12-08
album: ROSOMÁK
  type: MusicAlbum
  date published: 2023-12-28
  track: ROSOMÁK
    type: MusicRecording
    duration: PT1M45S
    duration ms: 105000
    explicit: true
    by artist: Hejvl
    in album: ROSOMÁK
      type: MusicAlbum
      date published: 2023-12-28
    isrc code: QZWFR2300726
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T09:48:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8ab39aa75316df9ec18df9abd8fd7506c9b2b9afc96bf52b05efff87168393e2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958543
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958543
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFR2300726
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T11:58:44Z
    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 0x8ab39aa75316df9ec18df9abd8fd7506c9b2b9afc96bf52b05efff87168393e2. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFR2300726.
      date published: 2026-07-18T11:58:44Z
    audio: ROSOMÁK
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.999
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.815
      additional property: Energy
        type: PropertyValue
        value: 0.72
      additional property: Speechiness
        type: PropertyValue
        value: 0.059
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.102
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.552
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.388
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Ze Života Peklo
  type: MusicAlbum
  date published: 2024-01-13
album: 20k Freestyle
  type: MusicAlbum
  date published: 2024-03-22
album: Blunt
  type: MusicAlbum
  date published: 2024-07-19
album: BAG
  type: MusicAlbum
  date published: 2025-04-18
album: BIG SMOKE
  type: MusicAlbum
  date published: 2025-06-13
  track: BIG SMOKE
    type: MusicRecording
    duration: PT3M25S
    duration ms: 205308
    explicit: true
    by artist: Hejvl
    in album: BIG SMOKE
      type: MusicAlbum
      date published: 2025-06-13
    isrc code: QZTB22558666
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T11:01:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x787a33764644ce84fcf839dac685b56033450c5ce266a7b7e668e6abcc97417c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958867
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958867
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB22558666
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T14:02:11Z
    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 0x787a33764644ce84fcf839dac685b56033450c5ce266a7b7e668e6abcc97417c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:11Z), 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/QZTB22558666.
      date published: 2026-07-20T14:02:11Z
    audio: BIG SMOKE
album: BIG SMOKE (Erbyzz Remix)
album: BISCUIT

BIG SMOKE
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 140.075
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: 0.818
additional property: Energy
  type: PropertyValue
  value: 0.752
additional property: Speechiness
  type: PropertyValue
  value: 0.276
additional property: Acousticness
  type: PropertyValue
  value: 0.049
additional property: Instrumentalness
  type: PropertyValue
  value: 0.003
additional property: Liveness
  type: PropertyValue
  value: 0.141
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.803
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.182
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Major

BIG SMOKE (Erbyzz Remix)
type: MusicAlbum
date published: 2025-06-27

BISCUIT
type: MusicAlbum
date published: 2025-10-31