Lengyel Johanna
type: MusicGroup
popularity: 8
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xab7897acf8fe68558b74e502a67f45215a724672a3aa3fbd85598a4b59f6c9d0
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/95aeda24-6092-45c6-9c59-5da662657f22.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95aeda24-6092-45c6-9c59-5da662657f22.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/95aeda24-6092-45c6-9c59-5da662657f22
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xab7897acf8fe68558b74e502a67f45215a724672a3aa3fbd85598a4b59f6c9d0","name":"Lengyel Johanna","registered_at":"2026-06-17T17:56:29Z","symbol":"NIM1473809","token_address":"0x36707a8c698251d79145c8af370554b07b10ea69","type":"artist","uuid":"95aeda24-6092-45c6-9c59-5da662657f22"}
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 0xab7897acf8fe68558b74e502a67f45215a724672a3aa3fbd85598a4b59f6c9d0. 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/95aeda24-6092-45c6-9c59-5da662657f22.json and https://artists.proofprofile.net/proofs/artist/95aeda24-6092-45c6-9c59-5da662657f22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xab7897acf8fe68558b74e502a67f45215a724672a3aa3fbd85598a4b59f6c9d0","name":"Lengyel Johanna","registered_at":"2026-06-17T17:56:29Z","symbol":"NIM1473809","token_address":"0x36707a8c698251d79145c8af370554b07b10ea69","type":"artist","uuid":"95aeda24-6092-45c6-9c59-5da662657f22"}
track: Csillagszórás
  type: MusicRecording
  duration: PT4M20S
  duration ms: 260079
  explicit: false
  by artist: Des Laszlo
  by artist: Geszti
  by artist: Lengyel Johanna
  by artist: Wunderlich József
  by artist: Brasch Bence
  by artist: Csiby Gergely
  by artist: Ember Márk
  by artist: Horváth Cintia
  by artist: Kanizsa Georgina
  by artist: Kovács Olivér
  by artist: Medveczky Balázs
  by artist: Nagy Bettina
  by artist: Nági
  by artist: Péterffy Lili
  by artist: Szántó Balázs
  by artist: Zabos Regina
  in album: Csillagszórás
    type: MusicAlbum
    date published: 2020-12-11
  isrc code: HUA182015201
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-10T21:17:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb90fb7edd8ee6a7310206d540c2722dbf209b3ae8a9cf6264df49f103976c251
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA182015201
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  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 0xb90fb7edd8ee6a7310206d540c2722dbf209b3ae8a9cf6264df49f103976c251. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUA182015201.
    date published: 2026-06-13T13:32:09Z
  audio: Csillagszórás
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 124.422
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.5
    additional property: Energy
      type: PropertyValue
      value: 0.572
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.838
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.116
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.242
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.118
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major