Coin age is typically measured as: [number of coins] x [length of holding]
• Ex. If you had 1 coin and held it for 8 hours, you would have a coin age of 8 hours
• Ex. If you had 10 coins and held them for 4 hours, the coin age would be 40 hours
Coin age is a unit of measurement often used by proof-of-stake networks to calculate the value of a node's holdings during a hashing period. It can also be used to help determine transaction legitimacy as older coins are less likely to be part of orphaned or fraudulent transactions.