Another 12 banks have joined the blockchain consortium led by startup R3 CEV. The consortium now has 42 banks. The consortium is focused on establishing protocols and standards for using blockchain technologies in financial services. Nine banks collaborated (mid-September) to develop common standards of blockchain technology by backing a blockchain startup called R3 CEV. Thirteen more banks joined by the end of September. In October, three more banks joined the R3CEV collaboration, taking the total count to 25; in November, five more banks joined hands to make the total number of banks in the R3CEV collaboration to 30.

http://letstalkpayments.com/total-number-of-banks-in-the-r3-cev-blockchain-consortium-rises-to-42/