Ether Blockchain Explorer https://www.instapaper.com/p/16801288 So, when there is a large number of transactions during the mempool and you simply compensated a comparatively very low transaction charge, your transaction can continue being unconfirmed for an prolonged time frame considering the fact that miners/validators will pick transactions with better service fees initial. https://bookmarkize.com/story20209216/blockchain-explorer-a-secret-weapon-for-blockchain-explorer-analytics-and-web-services-https-cutt-ly-3rj9ygbc