I was wondering how can we build a transaction with a fixed amount of fees already FIXED.
Let's have this configuration 2 Inputs (X:0 = 520 BTC, X:1 = 102 BTC) => 1 RECEIVER (+510 BTC) Fees are: 0.001 BTC / byte
How can we build a transaction wheras we don't even know the signature size ? Can you show your steps please ?