Bitcoin surged past $80,000 over the last 24 hours, sparking debate over whether the rally is sustainable or a local high. ^[1] On 2026-09-03, Bitcoin accelerated above $81,000 as easing rate fears and fresh institutional demand lifted the broader crypto market, with Ethereum, XRP and Solana gaining more than 5% and Zcash and Cardano climbing more than 10%. ^[2] On 2026-09-03, Federal Reserve Gov. Christopher Waller said he could support keeping interest rates unchanged this month if August inflation continues to cool, helping push market-implied odds of a September rate increase to roughly 50% from about 65% earlier in the day. ^[3] On 2026-09-03, US spot Bitcoin ETFs drew $730.9 million, their largest daily inflow since January, with BlackRock's IBIT accounting for roughly $454 million and products from Fidelity, Grayscale and others also attracting capital. ^[4] Alphractal reported that Bitcoin's 1-year active supply dropped to a low of 7.49 million, indicating investors are holding assets rather than moving them. ^[5] AMBCrypto analysis suggests the $76,000 level will remain a key test for Bitcoin to determine if the market will see another decline. ^[6] CryptoQuant data showed Bitcoin's exchange reserves fell to 2.70 million after peaking at 2.73 million on August 17, reducing available supply for sale. ^[7] Greeks.live said call gamma exposure has increasingly converged as traders sell calls above $80,000, while put gamma exposure remains minimal, potentially creating friction around heavily populated strikes. ^[8]