Blockchain Explorer Example https://numberfields.asu.edu/NumberFields/show_user.php?userid=6213549 So, if there is a large number of transactions during the mempool so you paid a comparatively small transaction cost, your transaction can continue to be unconfirmed for an extended length of time due to the fact miners/validators will decide on transactions with larger fees to https://www.bitsdujour.com/profiles/dxNl6l