Karol Hadrych
type: MusicGroup
genre: disco polo
popularity: 8
followers: 226
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0fe346dc6ba36cdb59bf9721f44381483246d9e29fe5b9c78949a737dd63113f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f760f1a-6b8e-406d-add8-b5ef0f673b42.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f760f1a-6b8e-406d-add8-b5ef0f673b42.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3f760f1a-6b8e-406d-add8-b5ef0f673b42
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0fe346dc6ba36cdb59bf9721f44381483246d9e29fe5b9c78949a737dd63113f","name":"Karol Hadrych","registered_at":"2026-06-16T11:39:29Z","symbol":"NIM1040388","token_address":"0x4daf17bfdd24f6159ff34bb21a66eb3b4b28f634","type":"artist","uuid":"3f760f1a-6b8e-406d-add8-b5ef0f673b42"}
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 0x0fe346dc6ba36cdb59bf9721f44381483246d9e29fe5b9c78949a737dd63113f. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f760f1a-6b8e-406d-add8-b5ef0f673b42.json and https://artists.proofprofile.net/proofs/artist/3f760f1a-6b8e-406d-add8-b5ef0f673b42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0x0fe346dc6ba36cdb59bf9721f44381483246d9e29fe5b9c78949a737dd63113f","name":"Karol Hadrych","registered_at":"2026-06-16T11:39:29Z","symbol":"NIM1040388","token_address":"0x4daf17bfdd24f6159ff34bb21a66eb3b4b28f634","type":"artist","uuid":"3f760f1a-6b8e-406d-add8-b5ef0f673b42"}
album: Tylko Mnie Kochaj
  type: MusicAlbum
  date published: 2014
album: Powiedz Jeszcze Raz
  type: MusicAlbum
  date published: 2014
album: Lwica
  type: MusicAlbum
  date published: 2016-10-01