Wojciech Michniewski
type: MusicGroup
description: Wojciech Michniewski (4 April 1947 – 29 January 2026) was a Polish composer and conductor. Life and career Michniewski studied with Stanisław Wisłocki as well as Andrzej Dobrowolski at the State Musi
popularity: 3
followers: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe2738f6e12cd08e140fcb95945048b23aec7fc0987f2c4ad663db74e6c25aabf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d05423bb-4da7-424f-8dfc-cba3e94e23dc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d05423bb-4da7-424f-8dfc-cba3e94e23dc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d05423bb-4da7-424f-8dfc-cba3e94e23dc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe2738f6e12cd08e140fcb95945048b23aec7fc0987f2c4ad663db74e6c25aabf","name":"Wojciech Michniewski","registered_at":"2026-06-21T01:00:20Z","symbol":"NIM1767244","token_address":"0x8188654a56611fde9863de7770a43f041e87564c","type":"artist","uuid":"d05423bb-4da7-424f-8dfc-cba3e94e23dc"}
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 0xe2738f6e12cd08e140fcb95945048b23aec7fc0987f2c4ad663db74e6c25aabf. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d05423bb-4da7-424f-8dfc-cba3e94e23dc.json and https://artists.proofprofile.net/proofs/artist/d05423bb-4da7-424f-8dfc-cba3e94e23dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xe2738f6e12cd08e140fcb95945048b23aec7fc0987f2c4ad663db74e6c25aabf","name":"Wojciech Michniewski","registered_at":"2026-06-21T01:00:20Z","symbol":"NIM1767244","token_address":"0x8188654a56611fde9863de7770a43f041e87564c","type":"artist","uuid":"d05423bb-4da7-424f-8dfc-cba3e94e23dc"}