Blockchain Explorer Referral Code https://www.instapaper.com/p/16800477 So, if there is a lot of transactions from the mempool and you simply paid a comparatively very low transaction charge, your transaction can continue to be unconfirmed for an prolonged period of time because miners/validators will decide on transactions with increased service fees first. https://bookmarkingdepot.com/story20462139/explorer-blockchain-ethereum-how-explorer-blockchain-btc-can-save-you-time-stress-and-money-https-cutt-ly-3rj9ygbc