Mateusz Zalewski
type: MusicGroup
popularity: 13
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x260535d5b8a6f8d92b95d2c6d5d5efe07d13eb06ea8f273a5680ac0dac2f7d34
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27d1ebdb-f7db-4a86-83ee-f9fe8a332c5a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27d1ebdb-f7db-4a86-83ee-f9fe8a332c5a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27d1ebdb-f7db-4a86-83ee-f9fe8a332c5a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x260535d5b8a6f8d92b95d2c6d5d5efe07d13eb06ea8f273a5680ac0dac2f7d34","name":"Mateusz Zalewski","registered_at":"2026-06-14T08:33:20Z","symbol":"NIM0396935","token_address":"0x7698b203c7ce99a1e572ef0a45a2daecb24cf4c5","type":"artist","uuid":"27d1ebdb-f7db-4a86-83ee-f9fe8a332c5a"}
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 0x260535d5b8a6f8d92b95d2c6d5d5efe07d13eb06ea8f273a5680ac0dac2f7d34. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27d1ebdb-f7db-4a86-83ee-f9fe8a332c5a.json and https://artists.proofprofile.net/proofs/artist/27d1ebdb-f7db-4a86-83ee-f9fe8a332c5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:37:06Z
  text: {"copyright_id":"0x260535d5b8a6f8d92b95d2c6d5d5efe07d13eb06ea8f273a5680ac0dac2f7d34","name":"Mateusz Zalewski","registered_at":"2026-06-14T08:33:20Z","symbol":"NIM0396935","token_address":"0x7698b203c7ce99a1e572ef0a45a2daecb24cf4c5","type":"artist","uuid":"27d1ebdb-f7db-4a86-83ee-f9fe8a332c5a"}
album: Waiting For You
  type: MusicAlbum
  date published: 2022-07-29
album: Piano Miniatures, Vol. 1
  type: MusicAlbum
  date published: 2022-11-16
album: Piano Miniatures, Vol. 2
  type: MusicAlbum
  date published: 2023-03-24