Bitcoin Explorer Unconfirmed Transaction https://k12.instructure.com/eportfolios/1098588/entries/3707785 So, when there is a lot of transactions within the mempool and also you paid a relatively very low transaction price, your transaction can keep on being unconfirmed for an prolonged time frame given that miners/validators will select transactions with better expenses 1st. The mempool https://mediajx.com/story25340073/near-blockchain-explorer-top-guidelines-of-eth-blockchain-explorer-https-cutt-ly-3rj9ygbc