Xch Blockchain Explorer https://www.instapaper.com/p/16801185 So, when there is a lot of transactions inside the mempool and you compensated a relatively lower transaction payment, your transaction can remain unconfirmed for an prolonged stretch of time given that miners/validators will choose transactions with better costs initial. An unconfirmed transaction is any transaction https://travialist.com/story10781246/blockchain-explorer-mempool-ethereum-blockchain-explorer-fundamentals-explained-https-cutt-ly-3rj9ygbc