The network has been under a spam attack since last night/this morning.
Link: http://www.newsbtc.com/2016/11/23/spamming-continues-on-bitcoin-network-delays-transactions/
Mempool is clogged up - higher than normal tx fees
the spam lobby is very powerful Link: http://www.newsbtc.com/2016/11/23/spamming-continues-on-bitcoin-network-delays-transactions/
Mempool is clogged up - higher than normal tx fees
Edit: in the 90's sha256 was used to curtail spam in the emails and that industry has adopted very well
