Make A Blockchain Explorer https://www.hulkshare.com/sullivan77drake/ So, if there is a large number of transactions inside the mempool so you paid out a relatively very low transaction payment, your transaction can continue to be unconfirmed for an prolonged period of time because miners/validators will pick transactions with greater charges very first. https://thebookpage.com/story5970797/explorer-blockchain-ltc-blockchain-explorer-an-overview-https-cutt-ly-3rj9ygbc