SALT LAKE CITY, 2016-Oct-07 — /EPR Retail News/ — Electronic Transaction Clearing, Inc. (ETC) has integrated with t0’s platform and will act as custodian of shares in a forthcoming blockchain preferred share offering from Overstock.com. Under the agreement, ETC will provide custodian services to securities broker-dealer Keystone Capital Corporation, which has licensed t0’s blockchain-based trading technology.“This is…