Piotr Lemańczyk
type: MusicGroup
popularity: 4
followers: 221
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86359adbe24e3a48103c44198b483a950a7e03089e3300fdf490c212ec30ba8b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953879
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953879
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/098dd2fc-6ed7-4333-a765-60a612683d04.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/098dd2fc-6ed7-4333-a765-60a612683d04.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/098dd2fc-6ed7-4333-a765-60a612683d04
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86359adbe24e3a48103c44198b483a950a7e03089e3300fdf490c212ec30ba8b","name":"Piotr Lemańczyk","registered_at":"2026-06-15T16:55:07Z","symbol":"NIM0772011","token_address":"0x462f0ff1c984b3b403797a06939f05a3708b0209","type":"artist","uuid":"098dd2fc-6ed7-4333-a765-60a612683d04"}
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 0x86359adbe24e3a48103c44198b483a950a7e03089e3300fdf490c212ec30ba8b. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/098dd2fc-6ed7-4333-a765-60a612683d04.json and https://artists.proofprofile.net/proofs/artist/098dd2fc-6ed7-4333-a765-60a612683d04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:57:35Z
  text: {"copyright_id":"0x86359adbe24e3a48103c44198b483a950a7e03089e3300fdf490c212ec30ba8b","name":"Piotr Lemańczyk","registered_at":"2026-06-15T16:55:07Z","symbol":"NIM0772011","token_address":"0x462f0ff1c984b3b403797a06939f05a3708b0209","type":"artist","uuid":"098dd2fc-6ed7-4333-a765-60a612683d04"}
album: Follow the Soul
  type: MusicAlbum
  date published: 2008-07-25
album: Naha People
  type: MusicAlbum
  date published: 2010-11-19
album: Orange Trane Acoustic Trio
  type: MusicAlbum
  date published: 2012-01-27
album: Guru (feat. David Kikoski)
  type: MusicAlbum
  date published: 2012-01-28
album: Piotr Lemańczyk - Orange Trane Acoustic Trio
  type: MusicAlbum
  date published: 2013-07-23
album: Village Time
  type: MusicAlbum
  date published: 2019-07-29