Piotr Kosewski
type: MusicGroup
popularity: 5
followers: 43
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6cdd167aee68280dc5e92ff583df468b1df2410a5d831bf9aee77d3f935a00d2
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/b328c85a-fa90-4884-99a5-2023ad926180.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b328c85a-fa90-4884-99a5-2023ad926180.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b328c85a-fa90-4884-99a5-2023ad926180
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6cdd167aee68280dc5e92ff583df468b1df2410a5d831bf9aee77d3f935a00d2","name":"Piotr Kosewski","registered_at":"2026-06-20T13:18:04Z","symbol":"NIM1620033","token_address":"0x6275a49f216ae7d761732e17c2fdfdd07451d743","type":"artist","uuid":"b328c85a-fa90-4884-99a5-2023ad926180"}
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 0x6cdd167aee68280dc5e92ff583df468b1df2410a5d831bf9aee77d3f935a00d2. 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/b328c85a-fa90-4884-99a5-2023ad926180.json and https://artists.proofprofile.net/proofs/artist/b328c85a-fa90-4884-99a5-2023ad926180.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x6cdd167aee68280dc5e92ff583df468b1df2410a5d831bf9aee77d3f935a00d2","name":"Piotr Kosewski","registered_at":"2026-06-20T13:18:04Z","symbol":"NIM1620033","token_address":"0x6275a49f216ae7d761732e17c2fdfdd07451d743","type":"artist","uuid":"b328c85a-fa90-4884-99a5-2023ad926180"}
album: Ciemna dziś noc
  type: MusicAlbum
  date published: 2020
album: Piosenki na depresję
  type: MusicAlbum
  date published: 2020-03-15
album: Plecionka
  type: MusicAlbum
  date published: 2024-01-04
album: Brel. Młynarski
  type: MusicAlbum
  date published: 2025-01-31