Bitcoin has run so hot on short-term charts that it just set a decade record — a warning sign for anyone buying at these prices.

• Bitcoin's 4-hour RSI, a gauge of how overheated a rally is, pushed to about 94.
• That is likely the highest reading in ten years, with nothing comparable back through 2020.
• Even readings near 91 are rare, and past visits to that zone tended to be followed by a cooldown.
• The signal points to short-term exhaustion after a fast run-up, not a change in the longer-term trend.

Outlook: A pullback or sideways stretch is the usual outcome after readings this stretched.