The U.S. Securities and Exchange Commission has cracked the door to welcome crypto custody at a wide range of firms who've earned state charters as trust companies — a list that would include the trust affiliates of Coinbase, Kraken and other high-profile names in crypto. The SEC's Division of Investment Management issued a so-called no-action letter on Tuesday, a document that assures that the regulator doesn't intend to pursue any enforcement actions by those engaging in the specific activity — in this case, that SEC-registered advisers and funds can park digital assets in state trusts.