Sojka & Pęczak
type: MusicGroup
popularity: 12
followers: 70
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd932134704f42152058d3fe41db5db666ee6eb38ebe625c04d6ae2d0e705c512
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953736
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953736
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9886fbaa-a00b-4e53-80e9-ae1f5f706a0f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9886fbaa-a00b-4e53-80e9-ae1f5f706a0f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9886fbaa-a00b-4e53-80e9-ae1f5f706a0f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T03:21:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd932134704f42152058d3fe41db5db666ee6eb38ebe625c04d6ae2d0e705c512","name":"Sojka & Pęczak","registered_at":"2026-06-14T20:33:13Z","symbol":"NIM0568625","token_address":"0xca81d17944e4ac975438fe97542c1b665bb7aa1e","type":"artist","uuid":"9886fbaa-a00b-4e53-80e9-ae1f5f706a0f"}
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 0xd932134704f42152058d3fe41db5db666ee6eb38ebe625c04d6ae2d0e705c512. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9886fbaa-a00b-4e53-80e9-ae1f5f706a0f.json and https://artists.proofprofile.net/proofs/artist/9886fbaa-a00b-4e53-80e9-ae1f5f706a0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T03:21:19Z
  text: {"copyright_id":"0xd932134704f42152058d3fe41db5db666ee6eb38ebe625c04d6ae2d0e705c512","name":"Sojka & Pęczak","registered_at":"2026-06-14T20:33:13Z","symbol":"NIM0568625","token_address":"0xca81d17944e4ac975438fe97542c1b665bb7aa1e","type":"artist","uuid":"9886fbaa-a00b-4e53-80e9-ae1f5f706a0f"}
album: Cudny świat
  type: MusicAlbum
  date published: 2024-04-05