Coin-days destroyed, coins aged under 1 day
dormant time given up by coins held less than a day
Coins that moved within a day of arriving destroy almost no stored time: this band is 92% of all bitcoin volume but only 1.2% of all coin-days destroyed. That gap is the whole argument for measuring holding time instead of volume.
DefinitionFor every coin spent whose age fell less than a day, its size in bitcoin times the days it had sat still. Age is real elapsed time off a monotonised block clock (the running maximum of block timestamps), not blocks divided by 144. The twelve bands sum to total coin-days destroyed exactly. This band is 1.2% of the all-time total.
LimitAge is per output, not per owner: consolidating coins or receiving change resets the clock on bitcoin nobody sold.