Jerzy Michalski
type: MusicGroup
description: Jerzy Michalski (9 April 1924 in Warsaw – 26 February 2007 in Warsaw) was a Polish historian, specializing in the 18th and 19th centuries. He was a professor of the Institute of History at the Polish
popularity: 10
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xba3746db3a5307835767f432d14af728624cff7f08497cfb1f0edb00df5b6ee8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f867a88c-b082-4621-9df4-29f6e88998ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f867a88c-b082-4621-9df4-29f6e88998ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f867a88c-b082-4621-9df4-29f6e88998ca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xba3746db3a5307835767f432d14af728624cff7f08497cfb1f0edb00df5b6ee8","name":"Jerzy Michalski","registered_at":"2026-06-21T16:25:30Z","symbol":"NIM1974048","token_address":"0xec5ab2fc6471fa9a3ede5e338a6dfea733484f33","type":"artist","uuid":"f867a88c-b082-4621-9df4-29f6e88998ca"}
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 0xba3746db3a5307835767f432d14af728624cff7f08497cfb1f0edb00df5b6ee8. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f867a88c-b082-4621-9df4-29f6e88998ca.json and https://artists.proofprofile.net/proofs/artist/f867a88c-b082-4621-9df4-29f6e88998ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xba3746db3a5307835767f432d14af728624cff7f08497cfb1f0edb00df5b6ee8","name":"Jerzy Michalski","registered_at":"2026-06-21T16:25:30Z","symbol":"NIM1974048","token_address":"0xec5ab2fc6471fa9a3ede5e338a6dfea733484f33","type":"artist","uuid":"f867a88c-b082-4621-9df4-29f6e88998ca"}