Explorer Link copyright https://www.instapaper.com/p/16800704 So, if there is a lot of transactions while in the mempool and you simply compensated a relatively very low transaction cost, your transaction can remain unconfirmed for an extended time period given that miners/validators will decide on transactions with increased costs 1st. TraceHawk can be https://growthbookmarks.com/story20159685/blockchain-explorer-search-helping-the-others-realize-the-advantages-of-blockchain-explorer-mempool-https-cutt-ly-3rj9ygbc