Explorer Metal Blockchain https://www.giveawayoftheday.com/forums/profile/1149873 A blockchain unconfirmed transaction refers to some transaction initiated by a person that is still to generally be confirmed and recorded on the blockchain by a validator or miner. It is also referred to as a zero-confirmation transaction. These transactions stay in the mempool (memory pool) https://www.demilked.com/author/jacksongormsen3/