Blockchain Explorer Optimism https://www.instapaper.com/p/16801288 A blockchain unconfirmed transaction refers to your transaction initiated by a user that is definitely but being confirmed and recorded within the blockchain by a validator or miner. It is actually often known as a zero-affirmation transaction. These transactions stay in the mempool (memory pool) until https://www.giveawayoftheday.com/forums/profile/1149873