2F%2Fcoinreport%2Enet%2Fbraintree-opens-pr=vate-beta-bitcoin-payments-us- merchants%2F> 3 EFTA_R1_01333403 EFTA02353159 Mobile payment processor Braintree ann=unced Thursday that it is opening up private beta access to allow US merch=nts to accept Bitcoin through v.zero. A PayPal subsidiary, Braintree deve