Bitcoin’s break above $80,000 has spread across the altcoin market, with 19 of the 20 largest liquid altcoins rising more than 12% between Aug. 18 and Aug. 25, according to Bitfinex. Bitcoin gained more than 29% from its range lows after breaking above $67,000 on Aug. 19, although the exchange identified $80,000 to $81,000 as a key resistance zone. The move was driven largely by aggressive spot demand, unlike the rally in May. U.S. spot Bitcoin ETFs recorded seven consecutive positive sessions and attracted $1.92 billion from Aug. 17-21, absorbing roughly 12 times the Bitcoin mined during that period. Ethereum ETFs posted their strongest weekly inflows since early October, while XRP ETFs had their best week in three months. Bitfinex placed Bitcoin’s near-term range at $77,100 to $81,000: sustained ETF inflows and spot buying could support a break above $81,000, while a fall below $77,100 would question the rally’s durability. The former $73,500 cost-basis resistance has become potential support, with further major breakeven levels near $86,500 and $94,000. Zcash rose more than 50%, XRP gained more than 45% and Aave advanced more than 40%. Hyperliquid reached a new all-time high, while Ethereum, Solana and Dogecoin rose between 20% and 30%. Tron, up 1%, was the only major altcoin to largely miss the move. TOTAL3 market capitalization, excluding Bitcoin and Ethereum, increased 21% to $791.5 billion, its highest level in 203 days, while the ETH/BTC ratio rose roughly 5% in its first sustained advance since spring.