What the chart shows
The chart shows Bitcoin’s monthly price. Purple verticals mark halvings and green verticals mark the midpoints of completed cycles. Dashed lines estimate the next halving and the midpoint of the open cycle.
How to interpret it
Overlaying halvings and cycle midpoints on price helps compare Bitcoin across four-year eras. A midpoint is half of the calendar interval between adjacent halvings; the open-cycle estimate moves together with the expected next-halving date.