今天该怎么看：市场从昨天的谨慎乐观转向防御，整体加密市值一天跌了5.88%到2.64万亿美元，山寨币和小币种领跌，比特币本身相对抗跌，跌破7.9万美元附近但还算稳住。
核心证据是三个坏消息同时兑现：第一，比特币现货ETF连续第二天净流出（-1.2亿美元，上一天-4700万），说明机构资金没有跟上昨天那波反弹，不过要注意这是"流出后的第一个流出日的延续"，还没到危险级别，14天累计仍是+26.6亿美元净流入，中长期资金没有大幅撤离。第二，美国8月PPI（衡量企业出厂价格的通胀指标）同比涨5.4%，高于市场预期，加上布伦特原油突破每桶100美元、伊朗和美国在霍尔木兹海峡附近互有攻击、ECB意外加息到2.5%，这一连串消息让"通胀会持续更久、利率降不下来"的担忧同时发酵，纳斯达克和标普500也同步下跌1.2%和0.5%，说明这次不是加密币自己的问题，是整个风险资产在避险。第三，衍生品数据显示以太坊资金费率由正转负（做多的人要向做空的人付钱了），叠加以太坊未平仓合约（新增杠杆仓位规模）逆势上升1.25%，属于"新增空头进场"而不是恐慌性平仓，说明专业资金在主动看空，这是今天比较新的信号。
需要留意的反面信号：比特币交易所净流出的结构性趋势没变（过去7天净流出1.47万枚，代表币被转去冷钱包囤积），恐慌贪婪指数69分仍处于贪婪区间、且在过去一周65-74的区间里居中，说明散户情绪还没真正恐慌，市场还没到深度出清的阶段——这意味着如果坏消息持续，下跌可能还没走完。
接下来关注：一是23.5小时后美国8月CPI数据，如果延续PPI的偏热势头，可能进一步压制降息预期，加密市场大概率承压；二是CPI公布后有两天美股休市，流动性会变薄，波动可能放大；三是紧盯比特币ETF流出会不会连续第三天，如果转为流入，说明机构认为这只是情绪性调整；如果继续流出，则确认机构在这轮地缘+通胀双重压力下选择观望。
The verdict: sentiment has pivoted from yesterday's cautious optimism to a defensive posture. Total crypto market cap dropped 5.88% in 24 hours to $2.64T, with altcoins and small caps leading losses while bitcoin held up relatively well, slipping just below $79k but not breaking down further.
Three headwinds landed together. First, BTC spot ETFs posted a second straight day of net outflows (-$120M, following -$47M the prior day) — institutional demand hasn't caught up with yesterday's bounce, though the 14-day cumulative flow is still +$2.66B, so this isn't a mass institutional exit yet. Second, August PPI (a measure of producer-level inflation) came in hot at 5.4% year-over-year, above expectations, while Brent crude broke above $100 a barrel and reports emerged of US-Iran strikes near the Strait of Hormuz, and the ECB surprised markets with a rate hike to 2.5%. This combination reignited fears that inflation will stay elevated and rates won't come down soon — and it hit equities too, with the Nasdaq down 1.2% and the S&P 500 down 0.5%, confirming this is a broad risk-off move, not crypto-specific. Third, ETH funding flipped negative (longs now pay shorts to hold positions) while ETH open interest — the total value of leveraged positions — rose 1.25% even as price fell, signaling fresh short positioning rather than panic long liquidations. This is today's newest and most notable derivatives signal.
The counter-signal worth watching: bitcoin's structural exchange outflow trend is intact (14,724 BTC left exchanges over the past week, consistent with accumulation into cold storage), and the Fear & Greed index sits at 69 — still in Greed territory and mid-range for the past week (65-74) — meaning retail sentiment hasn't turned fearful yet. That's a mixed signal: if bad news keeps coming, this selloff may not be finished.
What to watch next: US August CPI data lands in about 23.5 hours — if it echoes the hot PPI print, it will further dent rate-cut hopes and likely keep crypto under pressure. Markets then close for two days after CPI, which can thin liquidity and amplify swings. And keep an eye on whether BTC ETF outflows extend to a third day — a reversal to inflows would suggest institutions see this as just a sentiment wobble, while continued outflows would confirm they're staying on the sidelines through this geopolitical-plus-inflation squeeze.
未来24小时最关键的是美国8月CPI数据（约23.5小时后公布）。如果CPI延续PPI的偏热势头，会进一步压低降息预期，加密市场大概率继续承压，比特币可能测试更低的位置；如果CPI温和，可能带来一波技术性反弹，但考虑到ETF连续流出、伊朗局势仍在升级，反弹的持续性存疑。另外CPI公布后美股将连休两天，市场流动性变薄，价格波动可能放大。同时紧盯比特币ETF流出是否会连续第三天——如果转为流入，说明机构认为这只是情绪性调整；如果继续流出，说明机构在地缘和通胀双重压力下选择观望，反弹基础会更脆弱。
The most important event in the next 24 hours is the US August CPI report, due in about 23.5 hours. If it echoes the hot PPI print, rate-cut expectations will get pushed out further and crypto likely stays under pressure, with bitcoin potentially testing lower levels. A soft CPI print could spark a technical bounce, but given the ongoing ETF outflows and escalating tensions near the Strait of Hormuz, any relief rally's durability is questionable. US markets will also be closed for two days after CPI, thinning liquidity and potentially amplifying moves. Watch closely whether BTC ETF outflows extend to a third day — a reversal to inflows would suggest institutions see this as a temporary sentiment dip, while continued outflows would confirm they're staying defensive through this combined geopolitical and inflation shock.