BTC 15-minute short-term surge up 0.64%: Escalation of the Iran–Iraq conflict is drawing safe-haven capital into the Strait of Hormuz

From 13:45 to 14:00 (UTC) on July 21, 2026, BTC surged by 0.64% within 15 minutes, trading in a range of 66,346.6–66,802.5 USDT, with an Ampl of 0.69%. Trading sentiment warmed noticeably, and the bid/ask depth ratio was 11.74, indicating an extreme bid advantage. BTC tapped into the intraday high zone, with a cumulative gain of about 3.98% over the past 24 hours.

The main driver behind this abnormal move is spillover from increased demand for risk avoidance triggered by a comprehensive escalation of the military conflict between the U.S. and Iran. After the U.S. carried out a new round of strikes on Iran’s missile systems, Iran’s Revolutionary Guard opened fire on oil tankers in the Strait of Hormuz and claimed it had hit two vessels. Both sides simultaneously struck each other’s military bases in Kuwait and Bahrain. With disruption risk looming over the world’s energy transportation chokepoint, gold held the $4,000 level, and oil prices jumped to above $91 during the day. As a beneficiary of the “digital gold” narrative, BTC also received inflows of risk-hedging funds.

Second, uncertainty around Trump’s trade policy of imposing a 50% tariff on Canada, along with macro dynamics driven by disagreements over the Fed’s July rate-hike outlook, together strengthened the market’s preference for allocating to non-sovereign assets. A New York Fed report shows the U.S. economy still has resilience, and expectations for at least one Fed rate hike within the year have warmed. However, current crypto-market pricing is dominated by risk-hedging logic and has not been suppressed by a stronger U.S. Dollar.

In the short term, watch for pullback risk: the 15-minute and 1-hour RSI are already in the overbought zone. ADX stands at 52.19 and 42.57, respectively, confirming strong short-term upward momentum, but there is pressure for a technical correction. Key support to watch is $66,267 (the low of the past 4 hours) and $64,076 (the 24-hour low). Overhead resistance to watch is $66,954 and the $68,000 psychological level. Going forward, continue monitoring developments in the U.S.–Iran conflict, the shipping situation in the Strait of Hormuz, and oil price trends. If geopolitical tensions ease or short-cycle overbought conditions correct, the short-term gains may be given back.