Reviewed the market tape tonight, zeroing in on order book structure rather than sentiment. The BTC-USD pair tells an interesting story through its depth profile. Mid-price hovering around 95,298, with the spread razor-thin at just 4 dollars—that's legitimately tight liquidity. The bid side shows real layering: 95,293 anchors 1.0520 BTC, while 95,298 holds 0.4772 BTC. Ask side mirrors this structure nicely—0.4772 BTC stacked at 95,311, then smaller clips filling up beyond. This isn't random noise. When you see bids and asks perfectly mirroring each other like this, it signals genuine market-making activity and actual depth. Not just surface-level order placement. The 4-dollar spread on Bitcoin is what real liquidity looks like—tight, structured, and predictable.