https://www.youtube.com/watch?v=YV4vVryXD4w
- What is a UTXO? Stands for Unspent Transaction Output. The video uses the analogy of physical cash: if you have $100, it might be a single $100 bill or ten $10 bills. In Bitcoin, these distinct “bills” are your UTXOs.
- Why it matters for Fees: When you send a transaction, you are “melting down” these inputs. If you have to melt down 50 small UTXOs (dust) to pay for a coffee, the transaction data size is huge, and your network fee will be very high.
- Why it matters for Privacy: If you combine a UTXO from a private source (like a non-KYC exchange) with a UTXO from a public source (like a KYC exchange), you might accidentally link your identities.
- The Solution: The video demonstrates Coin Control in Trezor Suite, letting you choose exactly which “bills” to spend to optimize for lower fees or better privacy.