Irena Urbańska
type: MusicGroup
genre: traditional music
popularity: 4
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x47e5c12cc1e9ef48e8cad8d73b8db07a5ecf3c2af71855bc4bbd8f65312e1400
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a41fde4-4e10-4d15-ac55-b813cafb8aa9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a41fde4-4e10-4d15-ac55-b813cafb8aa9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8a41fde4-4e10-4d15-ac55-b813cafb8aa9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x47e5c12cc1e9ef48e8cad8d73b8db07a5ecf3c2af71855bc4bbd8f65312e1400","name":"Irena Urbańska","registered_at":"2026-06-17T13:51:11Z","symbol":"NIM1415237","token_address":"0x013885ef33c417f92f5ba1c7251e14766cff5237","type":"artist","uuid":"8a41fde4-4e10-4d15-ac55-b813cafb8aa9"}
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 0x47e5c12cc1e9ef48e8cad8d73b8db07a5ecf3c2af71855bc4bbd8f65312e1400. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a41fde4-4e10-4d15-ac55-b813cafb8aa9.json and https://artists.proofprofile.net/proofs/artist/8a41fde4-4e10-4d15-ac55-b813cafb8aa9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x47e5c12cc1e9ef48e8cad8d73b8db07a5ecf3c2af71855bc4bbd8f65312e1400","name":"Irena Urbańska","registered_at":"2026-06-17T13:51:11Z","symbol":"NIM1415237","token_address":"0x013885ef33c417f92f5ba1c7251e14766cff5237","type":"artist","uuid":"8a41fde4-4e10-4d15-ac55-b813cafb8aa9"}
album: Kołysanki żydowskie
  type: MusicAlbum
  date published: 2015-12-15
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  type: MusicAlbum
  date published: 2016-01-07
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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