Five European Union countries—Hungary, Poland, Romania, Sweden, and Bulgaria—are considering replicating the Czech Republic's $1 million Bitcoin experiment, according to John D’Agostino of Coinbase. The Czech National Bank initiated this test in October 2025, holding Bitcoin outside official reserves to bypass European Central Bank (ECB) oversight. This move comes as the ECB framework excludes Bitcoin from official reserves, imposing stricter regulations on eurozone banks under the ESCB Statute. The EU's Markets in Crypto-Assets Regulation and Countering the Financing of Terrorism measures may impact how these non-eurozone countries manage digital assets.