Spent Age Median
eCash
The median age of coin spent that day.
Why it matters
It describes the **typical unit** rather than the exception, and a single ten-year sleeper waking cannot move it.
How it is built
Aggregated per day directly from the chain's own ledger — measured, not estimated or interpolated.
What to watch
The widening gap between it and the mean is itself a signal: a thin layer of old-hand movement above a sea of daily churn.