$BTC just crossed $81,000. This is a clean psychological level break — the kind that typically brings in momentum traders and rekindles retail interest.

What matters now isn't the number itself, but what happens in the next 24-48 hours. Does it hold above $80k on a daily close? Or does it spike and retrace like we've seen at previous resistance zones?

Historically, when $BTC breaks a major round number with conviction, it tends to run another 5-10% before cooling off. But if it's a fakeout, we'll see quick profit-taking and a pullback to the $78k-79k range.

Watch funding rates, open interest, and whether spot volume is actually supporting this move. A rally driven purely by perps usually doesn't last.