According to MEET.ONE, the pEOS team today announced a smart contract to announce the implementation of UTXO on EOS. Unspent Transaction Output (UTXO) is the transaction output that is not consumed. It was originally applied to Bitcoin, a data structure containing transaction data and execution code that can be easily understood as a token that has been received by an address but has not been consumed. The total balance of the wallet is calculated by tracking and adding all UTXOs available to the wallet. Users can't just consume a portion of UTXO, it is consumed as a whole.