Unspent Transaction Output Model

Transaction

An Unspent Transaction Output (UTXO) represents a verifiable, previously unspent portion of a cryptocurrency transaction, acting as a building block for subsequent transactions within a blockchain. It’s essentially a digital asset, a record of value held by an address, awaiting utilization in a new transaction. Unlike traditional banking systems with account balances, UTXOs provide a granular view of ownership, where each output is a discrete unit of value. This model is fundamental to Bitcoin and other UTXO-based cryptocurrencies, influencing transaction fee structures and privacy considerations.