The article described by the following json
{"title": "Poland signs contract to acquire Swedish submarines", "summary": "To strengthen its defence capabilities in the face of a growing Russian threat", "date": "Mon, 29 Jun 2026 16:14:14 +0200", "link": "https://www.ansa.it/nuova_europa/en/news/countries/poland/2026/06/29/poland-signs-contract-to-acquire-swedish-submarines_071d935f-30ac-4fdc-91ce-2d65f97456de.html"}
with the following SHA256 678f1fbdec490b36294cf6bcee33f11ffd75f68cc086e8595e2ae4d27010acca was timestamped in the Bitcoin blockchain using the Opentimestamps protocol.