Definition. 90D Coin Days Destroyed (CDD-90) is the 90-day rolling sum of Coin Days Destroyed (CDD), age-adjusted by normalizing for time to account for the increasing destructible-coin-age baseline as the network ages.

This is the Point-in-Time (PiT) variant of 90D Coin Days Destroyed (CDD-90). PiT metrics are strictly append-only and their history is immutable. The historic data does not necessarily reflect the best current knowledge, but the information at the time when a data point was first computed. PiT metrics are ideal candidates for applications in model backtesting and related quantitative purposes. Read our article on PiT metrics for more information.