Gala Blockchain Explorer http://pandora.nla.gov.au/external.html?link=https://cryptoexplorerhub.com So, when there is a large number of transactions inside the mempool therefore you paid a relatively low transaction cost, your transaction can continue to be unconfirmed for an extended period of time since miners/validators will find transactions with better costs very first. In many b... https://www.instapaper.com/p/16800964