copyright Blockchain Explorer https://myspace.com/gustafsonhein65 A blockchain unconfirmed transaction refers to the transaction initiated by a user that is definitely but 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 remain in the mempool (memory pool) http://pandora.nla.gov.au/external.html?link=https://cryptoexplorerhub.com