Michał Mierzejewski
type: MusicGroup
genre: symphonic rock
popularity: 3
followers: 126
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04232b7640b50a80aa83670f6099d99f51edcaaa3b62fcffc6af368edca8ab91
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a35771d2-2b58-4e7b-8678-8c2f1bd76446.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a35771d2-2b58-4e7b-8678-8c2f1bd76446.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a35771d2-2b58-4e7b-8678-8c2f1bd76446
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x04232b7640b50a80aa83670f6099d99f51edcaaa3b62fcffc6af368edca8ab91","name":"Michał Mierzejewski","registered_at":"2026-06-20T06:20:41Z","symbol":"NIM1538650","token_address":"0xf5619610366e9b1b3990000ece714da3fb4848dd","type":"artist","uuid":"a35771d2-2b58-4e7b-8678-8c2f1bd76446"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04232b7640b50a80aa83670f6099d99f51edcaaa3b62fcffc6af368edca8ab91. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a35771d2-2b58-4e7b-8678-8c2f1bd76446.json and https://artists.proofprofile.net/proofs/artist/a35771d2-2b58-4e7b-8678-8c2f1bd76446.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x04232b7640b50a80aa83670f6099d99f51edcaaa3b62fcffc6af368edca8ab91","name":"Michał Mierzejewski","registered_at":"2026-06-20T06:20:41Z","symbol":"NIM1538650","token_address":"0xf5619610366e9b1b3990000ece714da3fb4848dd","type":"artist","uuid":"a35771d2-2b58-4e7b-8678-8c2f1bd76446"}
album: Symphonic Theater of Dreams - a Symphonic Tribute to Dream Theater
  type: MusicAlbum
  date published: 2013-03-08
album: Uprising Legacy
  type: MusicAlbum
  date published: 2016-08-19
album: Faith in Yourself
  type: MusicAlbum
  date published: 2019-09-15