Blockchain Explorer Stellar http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=3670142 So, if there is a large number of transactions in the mempool and you simply compensated a comparatively reduced transaction charge, your transaction can continue being unconfirmed for an extended period of time due to the fact miners/validators will pick transactions with better fees... https://bookmarkjourney.com/story20509655/blockchain-explorer-analytics-and-web-services-a-review-of-blockchain-explorer-usdt-https-cutt-ly-3rj9ygbc