Block Explorer Logo https://www.instapaper.com/p/16800964 A blockchain unconfirmed transaction refers to a transaction initiated by a consumer that may be but to be confirmed and recorded to the blockchain by a validator or miner. It really is also known as a zero-confirmation transaction. These transactions remain in the mempool (memory pool) https://bookmarkstown.com/story20411153/explorer-blockchain-base-everything-about-blockchain-explorer-unconfirmed-transaction-https-cutt-ly-3rj9ygbc