The provided evidence strongly supports the core assertion of the statement, which is that Senator Lummis is actively involved with and discusses digital asset tax packages. Multiple sources, including a high-authority official Senate document and a Forbes article, confirm her central role in this policy area. Specifically, the evidence establishes her as the head of the Subcommittee on Digital Assets and confirms she has introduced legislation aimed at addressing crypto tax compliance burdens and creating tax exemptions. Her work on the Responsible Financial Innovation Act (RFIA) further solidifies her position as a key legislator on this topic. However, none of the provided primary sources explicitly mention the "Blockchain Policy Summit." Therefore, there is no direct evidence to confirm that she discussed these tax packages at that specific event. Despite the lack of confirmation for the venue, the assessment is "likely_true" with high confidence because the most substantial part of the claim—Senator Lummis's work on and discussion of digital asset tax policy—is overwhelmingly verified by credible sources. It is highly plausible that a leading senator on this subject would discuss her signature policy initiatives at a relevant summit. The high truth probability reflects the strong circumstantial evidence, while the small false probability accounts for the unverified location.