Why is Bitcoin price down today despite falling exchange reserves?

Bitcoin slipped toward $83,100 in Tuesday’s Asian session as rising U.S. Treasury yields pressured risk assets and pulled BTC toward the lower edge of its recent range. The 10-year yield climbed to about 5.27% on Monday, its highest level since 2007, driven by oil price swings, inflation worries and expectations of more Federal Reserve tightening. BTC was last near $83,000–$84,000 after trading closer to $84,000 and after last week’s push toward $87,000. Several major coins fell as well: Zcash dropped about 12% to $1,380, Solana and Hyperliquid fell 3%–4%, and Dogecoin, BNB and XRP declined. Market focus is on the Aug PCE report due Sept. 30 at 8:30 a.m. ET. Traders cited technical weakness after four-hour momentum turned bearish.