What's this?

It's similar to coin-age but age is calculated using 30-day offset and 90-day upper limit.

Examples for 1 coin:

Parameter0 days10 days15 days30 days60 days90 days120 days200 days

How it's used in the Novacoin?

CoinDayWeight is a parameter of proofhash target in the Proof-of-Stake system.
 nBlockTarget = CoinDayWeight * nNetworkTarget
Proof hash must satisfy the nBlockTarget, so greater CoinDayWeight means higher probability for generation of Proof-of-Stake block.

BasisNetwork basicsClient softwareRelated pages