Metal Blockchain Explorer https://www.instapaper.com/p/16800477 So, if there is a large number of transactions within the mempool so you paid out a relatively very low transaction cost, your transaction can stay unconfirmed for an extended time frame due to the fact miners/validators will find transactions with better service fees to start https://mysocialname.com/story5265005/blockchain-explorer-usdt-trc20-not-known-facts-about-blockchain-explorer-address-https-cutt-ly-3rj9ygbc