What are TX fees?
Excuse me, could you please elaborate on the concept of TX fees within the realm of cryptocurrency transactions? Are these fees inherent to the process, and if so, what purpose do they serve? Are they variable or fixed, and are there any factors that influence their determination? Additionally, how do these fees impact the overall cost and efficiency of conducting transactions on various blockchain networks? I'm particularly interested in understanding the nuances and implications of TX fees for cryptocurrency users and investors.