The SEC's Division of Trading and Markets has issued a staff statement on custody of crypto-asset securities by broker-dealers, stating that the Division will not object to a broker-dealer being deemed to have "physical possession" of crypto-asset securities held for client accounts pursuant to Rule 15c3-3 (b) (1) if the broker-dealer takes the measures described below. Access rights and transfer capabilities of crypto-asset securities Evaluation of the characteristics of distributed ledger tech...