The assessment is "likely_true" based on a single, highly relevant source that corroborates the core details of the statement, despite a minor factual discrepancy and the source's low authority. A social media post directly reports on a transaction of 3,091 BTC valued at $278.84 million being moved between unknown wallets. These figures are extremely close to the statement's claim of "Over 3,100 Bitcoin" with a value of "$280 million." The substance of the claim—a very large transfer between unidentified parties—is directly supported.However, there is a slight inaccuracy: 3,091 BTC is not "over 3,100 BTC." This minor discrepancy prevents the statement from being assessed as definitively true. The low authority of the source (a social media account) also adds a layer of uncertainty, although such accounts often report on real blockchain events.Other provided sources are either irrelevant (e.g., currency converters, corporate financial reports, explorers for other blockchains) or discuss unrelated transactions. One source mentions a "$280 million" figure but in the completely different context of liquidated market positions, which does not contradict the claim about a wallet transfer.In conclusion, the available evidence strongly suggests that a transaction of approximately the stated size and nature did occur, making the statement substantially true, albeit with a minor imprecision in the reported number of Bitcoin.