Olek Grotowski & Małgosia Zwierzchowska
type: MusicGroup
genre: sea shanties
popularity: 9
followers: 694
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2724792e2e2ac7458a00f0a2616f47975ec73260bfd451770771b080d1197002
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/48600d70-a289-404d-8ef6-4c3d72e2ea6c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/48600d70-a289-404d-8ef6-4c3d72e2ea6c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/48600d70-a289-404d-8ef6-4c3d72e2ea6c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2724792e2e2ac7458a00f0a2616f47975ec73260bfd451770771b080d1197002","name":"Olek Grotowski & Małgosia Zwierzchowska","registered_at":"2026-06-16T14:49:56Z","symbol":"NIM1085814","token_address":"0x04099f55c72f7148d8ae943de74519a00c48a92b","type":"artist","uuid":"48600d70-a289-404d-8ef6-4c3d72e2ea6c"}
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 0x2724792e2e2ac7458a00f0a2616f47975ec73260bfd451770771b080d1197002. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48600d70-a289-404d-8ef6-4c3d72e2ea6c.json and https://artists.proofprofile.net/proofs/artist/48600d70-a289-404d-8ef6-4c3d72e2ea6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x2724792e2e2ac7458a00f0a2616f47975ec73260bfd451770771b080d1197002","name":"Olek Grotowski & Małgosia Zwierzchowska","registered_at":"2026-06-16T14:49:56Z","symbol":"NIM1085814","token_address":"0x04099f55c72f7148d8ae943de74519a00c48a92b","type":"artist","uuid":"48600d70-a289-404d-8ef6-4c3d72e2ea6c"}
album: Największe hity
  type: MusicAlbum
  date published: 1997
album: Uśmiech Giocondy
  type: MusicAlbum
  date published: 2000-01-01
album: Transatlantyki
  type: MusicAlbum
  date published: 2014-05-07