Doge Blockchain Explorer https://www.bitsdujour.com/profiles/dxNl6l So, when there is a large number of transactions while in the mempool so you paid out a comparatively low transaction cost, your transaction can stay unconfirmed for an prolonged time period since miners/validators will decide on transactions with bigger charges 1st. The mempool essentially queues https://socialbuzzmaster.com/story5858079/ltc-blockchain-explorer-top-explorer-blockchain-ethereum-secrets-https-cutt-ly-3rj9ygbc