Bartosz Michałowski
type: MusicGroup
genre: choral
genre: requiem
popularity: 3
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9834b884e95ecb63b7416e82a6092a886b19fa82027235c173bceff9c96151a6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/060de9df-437a-4a4b-9e5f-690f82faf07f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/060de9df-437a-4a4b-9e5f-690f82faf07f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/060de9df-437a-4a4b-9e5f-690f82faf07f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9834b884e95ecb63b7416e82a6092a886b19fa82027235c173bceff9c96151a6","name":"Bartosz Michałowski","registered_at":"2026-06-15T15:33:41Z","symbol":"NIM0752561","token_address":"0x35f4e0967908c72150bb1631e9d3dc204d1696ff","type":"artist","uuid":"060de9df-437a-4a4b-9e5f-690f82faf07f"}
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 0x9834b884e95ecb63b7416e82a6092a886b19fa82027235c173bceff9c96151a6. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/060de9df-437a-4a4b-9e5f-690f82faf07f.json and https://artists.proofprofile.net/proofs/artist/060de9df-437a-4a4b-9e5f-690f82faf07f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0x9834b884e95ecb63b7416e82a6092a886b19fa82027235c173bceff9c96151a6","name":"Bartosz Michałowski","registered_at":"2026-06-15T15:33:41Z","symbol":"NIM0752561","token_address":"0x35f4e0967908c72150bb1631e9d3dc204d1696ff","type":"artist","uuid":"060de9df-437a-4a4b-9e5f-690f82faf07f"}
album: Rossini - Petite messe solennelle
  type: MusicAlbum
  date published: 2023-05-05
album: Wielkopolska 1918: Songs of the Wielkopolska Uprising
  type: MusicAlbum
  date published: 2019-06-07