BASEFEE (0x48) that returns the value of the base fee at the
On blockchains without EIP-1559, I would expect
BASEFEE to return 0. I expect most contracts using
BASEFEE to do
GASPRICE - BASEFEE, and I expect the constraint
BASEFEE <= GASPRICE to hold in such case.
An overview of EIP-3198: BASE FEE opcode with @rai.