Mariusz Praśniewski
type: MusicGroup
popularity: 4
followers: 87
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x44b38b09d96eff3d8c01214a7d56212db38347e630492662e3869fb37944a917
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953976
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953976
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2bd918ed-daa1-4b85-82bc-7d182cb69d2b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2bd918ed-daa1-4b85-82bc-7d182cb69d2b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2bd918ed-daa1-4b85-82bc-7d182cb69d2b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:55:36Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x44b38b09d96eff3d8c01214a7d56212db38347e630492662e3869fb37944a917","name":"Mariusz Praśniewski","registered_at":"2026-06-16T04:45:58Z","symbol":"NIM0941665","token_address":"0xe22d9e6a1f9c243363500114deb086d0470d95ff","type":"artist","uuid":"2bd918ed-daa1-4b85-82bc-7d182cb69d2b"}
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 0x44b38b09d96eff3d8c01214a7d56212db38347e630492662e3869fb37944a917. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bd918ed-daa1-4b85-82bc-7d182cb69d2b.json and https://artists.proofprofile.net/proofs/artist/2bd918ed-daa1-4b85-82bc-7d182cb69d2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T17:11:18Z
  text: {"copyright_id":"0x44b38b09d96eff3d8c01214a7d56212db38347e630492662e3869fb37944a917","name":"Mariusz Praśniewski","registered_at":"2026-06-16T04:45:58Z","symbol":"NIM0941665","token_address":"0xe22d9e6a1f9c243363500114deb086d0470d95ff","type":"artist","uuid":"2bd918ed-daa1-4b85-82bc-7d182cb69d2b"}
album: Tåge
  type: MusicAlbum
  date published: 2013-05-13