Blockchain Explorer Down https://output.jsbin.com/nisuteliyi/ A blockchain unconfirmed transaction refers to some transaction initiated by a person which is yet to become confirmed and recorded to the blockchain by a validator or miner. It's often called a zero-confirmation transaction. An unconfirmed transaction is any transaction ask for submitted towards the blockchain https://k12.instructure.com/eportfolios/1098588/entries/3707785