The statement is overwhelmingly supported by multiple, high-authority primary sources. Four separate sources, all originating from the specialized and credible service Whale Alert, directly confirm that transfers of over $300 million in USDC between unidentified wallets have occurred. The evidence is consistent across Whale Alert's main website, its official X (Twitter) feed, and its Telegram channel. In fact, the sources document at least two separate, distinct transactions of this nature, which strongly validates that an event matching the statement's description took place. There is no contradictory evidence provided. The remaining sources are either entirely irrelevant to the specific claim (discussing different financial products, technical frameworks, or other cryptocurrencies like Dogecoin) or only tangentially related. The assessment of 'likely_true' with high confidence is based on the strength, consistency, and direct relevance of the evidence from the primary source.