Blockchain Block Example https://output.jsbin.com/kefuguxaze/ So, if there is a large number of transactions while in the mempool and you also paid a relatively very low transaction cost, your transaction can continue to be unconfirmed for an extended time period because miners/validators will find transactions with better costs first. In many https://adsbookmark.com/story20285709/blockchain-explorer-tool-the-ultimate-guide-to-explorer-blockchain-neo-https-cutt-ly-3rj9ygbc