Companion

Default block targets for fee estimation (3, 6, 9, 12, 18, 24, 36, 48, 72, 96, 144 blocks).

Default maximum fee rate in sat/vB for reporting. Estimates above this value are returned as null. Rounded up from exp(10) ≈ 22026.47 so that estimates at the simulation ceiling (bucket 1000) pass the filter.

Default minimum fee rate in sat/vB. Set to 0.1 for Bitcoin Core 29.1/30.0+ nodes.

Default confidence levels for fee estimation (5%, 20%, 50%, 80%, 95%).

Largest supported block target, one week of blocks. Simulation cost grows linearly with the target, so this bound keeps a caller-supplied numOfBlocks from costing minutes of CPU.