Xyo Blockchain Explorer https://intensedebate.com/people/mcculloughfour A blockchain unconfirmed transaction refers into a transaction initiated by a user that may be however to get confirmed and recorded around the blockchain by a validator or miner. It can be also called a zero-affirmation transaction. The mempool basically queues the transaction and broadcasts it https://k12.instructure.com/eportfolios/1098588/entries/3707785