The evidence indicates that credible financial news outlets have referenced Google Trends data showing that worldwide searches for 'how to buy bitcoin' reached a five-year high. Among the provided materials, one report from a moderately authoritative financial source directly cites Google Trends as the data origin, which lends substantial support to the claim. Several social and community posts also echo this trend observation, though they are secondary or user-generated and thus less reliable. Other content mentioning 'how to buy bitcoin' lacks any direct trend analysis or data validation and does not contradict the central statement—it is simply irrelevant. Therefore, while the direct Google Trends data is not independently verified within the sources available, the consistent reporting from a reputable financial outlet and corroborating social signals make the statement more likely true than false. The confidence is medium because most sources are secondary or informal rather than direct Google data, but the overall pattern of evidence supports the truth of the claim.