According to CoinMeta and 99bitcoins, today (August 28th), Federal Reserve Chairman Kevin Warsh will deliver his first major speech at Jackson Hole, and the market expects his remarks to have a significant impact on the price of Bitcoin. Bitcoin has risen from around $64,000 to $80,000 over the past week, and there is a high level of market attention to Warsh's speech. Currently, the market's expectations for a rate hike in September are 66.3% for a pause and 33.7% for a hike. If Warsh's speech leans towards a dovish stance, it may drive up Bitcoin prices; if it leans towards a hawkish stance, it could lead to a decline in Bitcoin prices. Analysts point out that Warsh's speech will determine whether the Federal Reserve will support the Treasury Department's expansion of its bond repurchase program, which is crucial for market sentiment.