Blockchain Explorer Optimism https://500px.com/p/enevoldsenepbhenderson So, if there is numerous transactions from the mempool so you paid out a comparatively small transaction rate, your transaction can continue being unconfirmed for an extended time period since miners/validators will pick out transactions with increased charges first. The mempool in essence queues the transaction https://wiishlist.com/story20873052/explorer-blockchain-btc-the-fact-about-ltc-blockchain-explorer-that-no-one-is-suggesting-https-cutt-ly-3rj9ygbc