Coin Years Destroyed (CYD) is defined as the 365 day rolling sum of Coin Days Destroyed (CDD), and shows the amount of coin days that have been destroyed over the past year. It is indicative of long-term holder behaviour. This version is supply-adjusted to account for the increasing baseline of the metric over time. This metric was first put forward by ARK Invest and further developed by Glassnode by adjusting for the circulating supply.

This is the Point-in-Time (PiT) variant of Supply-Adjusted CYD. 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.