The statement is assessed as likely true based on consistent and corroborating evidence from multiple high-authority sources. A major international news agency (Reuters), a primary source press release from Ripple, and several reputable industry-specific publications (CoinDesk, The Block, Banking Dive) all report that the U.S. Office of the Comptroller of the Currency (OCC) has granted approval to both Circle and Ripple for national bank charters. There is a slight nuance in the provided evidence that prevents a full 1.0 truth probability. The sources consistently clarify that the approval is "conditional" and that the charter is for a "national trust bank." The statement uses the term "secured" and describes the entities as "national digital currency banks." While receiving conditional approval is a critical step that could be described as having "secured" the charter, it is not yet final. Furthermore, while a "national trust bank" is the specific type of charter these crypto firms would seek to handle digital assets, the term "national digital currency bank" is a functional description rather than the precise legal one. Despite these minor semantic differences, the core assertion of the statement—that both Circle and Ripple have received federal approval to operate as nationally chartered banking institutions for digital assets—is strongly supported by all provided sources. There are no contradictions in the evidence.