Explorer Blockchain Solana https://myspace.com/sullivan58moody So, if there is a lot of transactions while in the mempool and you simply paid a comparatively lower transaction rate, your transaction can stay unconfirmed for an extended timeframe because miners/validators will pick transactions with increased expenses first. These transactions stay in the mempool (memory https://onelifesocial.com/story5935397/blockchain-explorer-mempool-everything-about-blockchain-explorer-unconfirmed-transaction-https-cutt-ly-3rj9ygbc