# TransactionSpentOutputs The spent outputs ([`Coin`](/documentation/BitcoinKernel/Coin) values) for a single transaction — the UTXOs that transaction’s inputs consumed. ``` final class TransactionSpentOutputs ``` ## Overview Carried inside a [`BlockSpentOutputs`](/documentation/BitcoinKernel/BlockSpentOutputs); obtained via [`transactionSpentOutputs(at:)`](/documentation/BitcoinKernel/BlockSpentOutputs/transactionSpentOutputs(at:)). The index aligns with the owning transaction’s [`input(at:)`](/documentation/BitcoinKernel/Transaction/input(at:)) list: coin `n` is what `input(at: n)` spent. Wraps the opaque `btck_TransactionSpentOutputs` type; `deinit` calls `btck_transaction_spent_outputs_destroy` when the last Swift reference drops.