The assessment is primarily based on a single but highly relevant and authoritative source. The news snippet on the MEXC exchange's price page provides strong, direct evidence supporting the statement. It explicitly connects "BREV (Brevis)" under a "New Listings" section with an Upbit announcement about the specific trading pairs mentioned in the claim: KRW, BTC, and USDT. This source addresses all key components of the statement—the exchange (Upbit), the token (BREV), and the trading pairs.None of the other sources directly contradict this information. While they discuss Upbit listing different tokens (ZKSync, zkPass), they serve to confirm that Upbit's common practice for new listings includes offering KRW, BTC, and USDT pairs. This adds a layer of plausibility to the claim's structure. The absence of information about BREV in these other sources is not evidence against the claim, as they are focused on different assets. Given the strong, direct supportive evidence from a moderately authoritative source and the lack of any conflicting information, the statement is assessed as likely true with a high degree of confidence.