Błażej Krajewski
type: MusicGroup
genre: comedy
popularity: 6
followers: 428
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2efe976ab02e7fd9b01352c3c0e14406e7c30b640775cf99021324877346f8c1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/afb32712-88ca-493e-a6ed-b47788dc1733.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/afb32712-88ca-493e-a6ed-b47788dc1733.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/afb32712-88ca-493e-a6ed-b47788dc1733
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2efe976ab02e7fd9b01352c3c0e14406e7c30b640775cf99021324877346f8c1","name":"Błażej Krajewski","registered_at":"2026-06-20T11:33:48Z","symbol":"NIM1602807","token_address":"0x2b9f2ce9b318baac5808dd98d6b5fa5a355d53b1","type":"artist","uuid":"afb32712-88ca-493e-a6ed-b47788dc1733"}
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 0x2efe976ab02e7fd9b01352c3c0e14406e7c30b640775cf99021324877346f8c1. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afb32712-88ca-493e-a6ed-b47788dc1733.json and https://artists.proofprofile.net/proofs/artist/afb32712-88ca-493e-a6ed-b47788dc1733.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x2efe976ab02e7fd9b01352c3c0e14406e7c30b640775cf99021324877346f8c1","name":"Błażej Krajewski","registered_at":"2026-06-20T11:33:48Z","symbol":"NIM1602807","token_address":"0x2b9f2ce9b318baac5808dd98d6b5fa5a355d53b1","type":"artist","uuid":"afb32712-88ca-493e-a6ed-b47788dc1733"}
album: Komedia Pomyłek
  type: MusicAlbum
  date published: 2020-12-07