Fee Estimation

The Bitcoin Core fee estimator minimum fee rate bucket was updated from 1 sat/vB to 0.1 sat/vB, which matches the node’s default minrelayfee. This means that for a given confirmation target, if a sub-1 sat/vB fee rate bucket is the minimum tracked with sufficient data, its average value will be returned as the fee rate estimate.
Note: Restarting a node with this change invalidates previously saved estimates in fee_estimates.dat, the fee estimator will start tracking fresh stats.