Pledge Collateral still the Major Headache for Miners Filecoin's main net is estimated to launch at Block 148,888, currently expected on October 15. As of today(10/13/2020 EST), we are 2 days before the main net launch of Filecoin. At the time of writing this article, the current Filecoin network(Space Race Network) is at the block height of 143,541…