The intended algorithm shift to improve the security of the ETC network has ensnared it. Switching to SHA 3 was recommended in the ECIP 1049 proposal. In the past, ETC has been subject to 51% attacks, rendering it vulnerable to new attacks. ETC : "In order for ETC to truly prosper, we need our own algorithm that is not based on ETH." ETH had a total of 745.38k active addresses at the time of writing, while ETC only had 35.94k.