A momentum gauge on Bitcoin is about to trigger a buy signal that has mostly paid off in the past, which is good news for holders.

• A 10-day momentum reading on Bitcoin is about to push above 80 for the first time in a long while.
• That has only happened 19 times in Bitcoin's history, and the signal is days away from confirming.
• One month after those past signals, Bitcoin was higher 79% of the time.
• The same pattern was also checked over one to three months out, so the bullish tilt is not just a one-month quirk.

Outlook: If the signal confirms as expected, history points to Bitcoin trading higher a month from now.