The evidence strongly supports the statement that Coinbase has engaged in lobbying activities directed at the U.S. Congress concerning stablecoin rewards. The assessment is based on a convergence of high-authority and high-relevance sources.First, multiple sources establish that stablecoin rewards are a significant and active topic of legislative debate within the U.S. Congress. A primary source from a crypto industry VP of Government Affairs confirms this is an 'active debate' in Congress. This is further corroborated by a news article stating the issue is a key point in bipartisan Senate talks, and a financial journalist who identifies it as a major discussion among government officials. This context confirms that the issue is a target for lobbying efforts.The most direct evidence linking Coinbase to these activities comes from a highly relevant news article that explicitly names Coinbase's Chief Policy Officer, Faryar Shirzad, and references his public statements on the topic of stablecoin rewards. The public advocacy of a company's Chief Policy Officer on a specific legislative matter is a form of lobbying. This source directly connects a key Coinbase executive to the specific issue in question within a policy context.The remaining sources are either too general, failing to mention Coinbase or the specific topic of rewards, or have low authority. However, crucially, none of the provided sources contradict the statement. The consistent narrative across the most credible and relevant sources builds a strong, affirmative case.