Open Source Blockchain Explorer https://www.demilked.com/author/crawford18sheehan/ A blockchain unconfirmed transaction refers to some transaction initiated by a person which is yet being confirmed and recorded around the blockchain by a validator or miner. It can be also referred to as a zero-affirmation transaction. These transactions stay in the mempool (memory pool) https://hedgedoc.k8s.eonerc.rwth-aachen.de/j3R-3tLTS2eUiwgXe35Vyg/