Xec Blockchain Explorer https://www.instapaper.com/p/16800964 So, when there is a large number of transactions while in the mempool and also you paid a relatively very low transaction price, your transaction can stay unconfirmed for an extended timeframe considering that miners/validators will pick transactions with greater fees initially. An unconfirmed transaction is https://socialupme.com/story5774271/blockchain-explorer-mempool-helping-the-others-realize-the-advantages-of-blockchain-explorer-mempool-https-cutt-ly-3rj9ygbc