Block Explorer Logo https://intensedebate.com/people/neergaard22nee So, if there is a large number of transactions in the mempool and also you paid a comparatively small transaction fee, your transaction can remain unconfirmed for an prolonged period of time since miners/validators will select transactions with higher fees first. The mempool in essence queues https://bookmarkedblog.com/story21405981/explorer-blockchain-usdt-5-essential-elements-for-ltc-blockchain-explorer-https-cutt-ly-3rj9ygbc