BTC's tight 4H compression near the lower mid-range, coupled with sharply declining 15M volume, indicates a temporary liquidity vacuum rather than a breakdown. Shorts are unlikely to push lower without volume confirmation. Expect a mean-reversion bounce toward the 50% range midpoint (77,460) and potential retest of the 77,600 local resistance as Asian session volume returns. Trade is valid only if price holds 77,350 intraday.