Bitcoin Standard for Polish Central Bankers Over the past weeks, we have been delivering ‚The Bitcoin Standard’ by to Polish MPs and the President of Poland to help deepen the public conversation about Bitcoin. Today, we expanded the initiative by sending a copy of the book to every member of the Management Board of Narodowy Bank Polski (NBP) — Poland’s central bank. Each book was accompanied by an open letter encouraging NBP to launch a controlled, educational‑operational Bitcoin pilot.