Supply aged under 1 day
bitcoin that has sat still less than a day
The smallest band and the most volatile: coins that changed hands today. It swells on days the price moves hard and on days exchanges rebalance, and it empties again within a week.
DefinitionCirculating supply held in unspent outputs whose age falls less than a day. 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 circulating supply exactly, verified to machine precision.
LimitAlmost all of this is exchange churn and change rather than people buying and selling, so read it as a proxy for how busy today was, not for how many coins found new owners. Age is per output, not per owner: consolidating coins or receiving change resets the clock on bitcoin nobody sold.