Blockchain Explorer Design https://www.demilked.com/author/jacksongormsen3/ So, when there is a lot of transactions in the mempool and you simply paid a relatively reduced transaction rate, your transaction can continue to be unconfirmed for an prolonged length of time considering that miners/validators will select transactions with bigger costs initial. An unconfirmed transaction https://www.demilked.com/author/jacksongormsen3/