# The proposed transaction will be spending a set of unspent TxOuts available in the blockchain. The full transactions containing these TxOuts will be serialized and included, as well. This so that the values of the TxIns can be verified before signing (the prev-tx-hash is part of the data being signed, but the value is not). By including the full tx, the signing party can verify that the tx matches the OutPoint hash, and then verify input values, all without any access to the blockchain.
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