@return the transaction hash of this UTXO

@return the transaction hash of this UTXO

@return the transaction output corresponding to UTXO {@code utxo}, or null if {@code utxo} is not in the pool.

Handles each epoch by receiving an unordered array of proposed transactions, checking each transaction for correctness, returning a mutually valid arr

Simple implementation of a UTXO hashCode that respects equality of UTXOs // (i.e. utxo1.equals(utxo2) => utxo1.hashCode() == utxo2.hashCode())

Simple implementation of a UTXO hashCode that respects equality of UTXOs // (i.e. utxo1.equals(utxo2) => utxo1.hashCode() == utxo2.hashCode())

add {@code block} to the block chain if it is valid. @return true if the block is valid and has been added, false otherwise

process a {@code Transaction}

Removes the UTXO {@code utxo} from the pool

@return true is {@code signature} is a valid digital signature of {@code message} under the key {@code pubKey}. Internally, this uses RSA sign