Bitcoin edged 0.4% lower to $79,259.3 by 09:52 ET (13:52 GMT) on Friday, staying close to the three-month high above $81,000 reached earlier in the week. The token was still up about 2% for the week after a sharp rebound fueled by optimism over U.S. regulatory progress, Treasury intervention in bond markets and a technology-stock rally following Nvidia's strong earnings. Risk appetite remained constrained by uncertainty surrounding the U.S.-Iran war and concerns about higher interest rates. Federal Reserve Chair Kevin Warsh was scheduled to speak later Friday at the Jackson Hole Economic Symposium, with investors watching for indications about the central bank's rate plans. Warsh has previously signaled the Fed's commitment to its 2% annual inflation target, while July PCE price index data (the Fed's preferred inflation gauge) showed inflation remaining above that level and prompted markets to modestly raise rate-hike bets. His remarks were also expected to draw scrutiny after Secretary Scott Bessent announced that the Treasury would double its bond buybacks. Ether rose 0.3% to $2,505.33, while XRP, Solana, Cardano and BNB fell. Dogecoin declined 1.4%, while $TRUMP gained more than 15%. Investing.com also promoted a limited-time 55% discount on InvestingPro subscriptions.