Noble Explorer Blockchain https://500px.com/p/enevoldsenepbhenderson So, when there is a large number of transactions from the mempool so you paid a comparatively small transaction rate, your transaction can continue being unconfirmed for an prolonged time frame given that miners/validators will choose transactions with higher service fees 1st. It is quite straightforward https://natural-bookmark.com/story20373026/blockchain-explorer-tools-the-best-side-of-blockchain-explorer-btc-https-cutt-ly-3rj9ygbc