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 entity-adjusted, meaning that transactions within addresses controlled by the same network participant are discarded (see this article for more information). This metric was first put forward by ARK Invest.

This is the Point-in-Time (PiT) variant of Entity-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.