The evidence strongly supports the truthfulness of the statement. The core of the claim originates from a primary source investigation by TRM Labs, a reputable blockchain intelligence firm specializing in this type of analysis. This primary source directly asserts that Iran's Revolutionary Guard Corps (IRGC) used two UK-registered companies to move over a billion dollars in cryptocurrency.This central finding is consistently corroborated by multiple secondary sources, including a crypto-focused media outlet (The Block), a major cryptocurrency data aggregator (CoinMarketCap), and a news report from the OECD. All of these sources accurately report the key elements of the TRM Labs investigation: the involvement of the IRGC, the sum of approximately $1 billion, and the use of exchanges registered in the UK.Furthermore, high-authority sources like the U.S. Department of the Treasury and another leading blockchain analysis firm, Chainalysis, provide crucial background context. While they do not confirm this specific incident, they establish a known pattern of behavior where Iran uses cryptocurrency for sanctions evasion and money laundering, which lends high plausibility to the specific claim made by TRM Labs.There is no conflicting or contradictory evidence among the provided sources. The only minor caveat is that the claim rests on the investigation of a single private firm, rather than an official government indictment or report. However, given the firm's expertise and the widespread, consistent reporting on its findings, the statement is assessed as highly likely to be true.