Given a number of bytes and a fee rate in satoshis-per-kilobyte, return the
minimum required fee. This calculation is important for standardness in dust
threshold calculation.
Parameters
length: bigint
the number of bytes for which the fee is to be paid
Given a number of bytes and a fee rate in satoshis-per-kilobyte, return the minimum required fee. This calculation is important for standardness in dust threshold calculation.