Block Explorer Immutable https://www.youtube.com/redirect?q=https://cryptoexplorerhub.com So, if there is a large number of transactions during the mempool and you simply paid out a comparatively reduced transaction fee, your transaction can continue to be unconfirmed for an extended time frame due to the fact miners/validators will find transactions with higher service fees https://hedgedoc.k8s.eonerc.rwth-aachen.de/kFtMQ9aTSTis_8Gbdx6V0Q/