Blockchain Explorer Genesis Block https://output.jsbin.com/nisuteliyi/ So, if there is a lot of transactions during the mempool and you simply paid out a comparatively very low transaction cost, your transaction can continue to be unconfirmed for an extended time period because miners/validators will select transactions with better costs very first. It https://olivebookmarks.com/story20271870/blockchain-explorer-one-the-best-side-of-blockchain-explorer-btc-https-cutt-ly-3rj9ygbc