How a Transaction is Built

A transaction spends inputs worth 60,000 sats and creates outputs worth 59,400 sats. What is the fee?

• 59,400 sats
• 600 sats
• It can't be known without a fee field

Why do wallets send change to a new address?

• Because an address can only receive once
• To make the transaction smaller
• So that observers can't easily tell which output is change and follow your coins