Blockchain Info Json http://pandora.nla.gov.au/external.html?link=https://cryptoexplorerhub.com So, if there is a lot of transactions in the mempool and you paid out a comparatively very low transaction price, your transaction can remain unconfirmed for an prolonged timeframe given that miners/validators will decide on transactions with higher charges first. Some transactions are more... http://pandora.nla.gov.au/external.html?link=https://cryptoexplorerhub.com