http://www.coindesk.com/why-mizuho-believes-bitcoin-still-has-a-future-in-banking/

>> The most advanced of these projects appears to be Mizuho’s work with Ripple to connect its global branches: 400 of which are in Japan and about 80 of which are elsewhere around the world.

コインデスクの記事によるとみずほ銀行はなんとRippleで世界中の支店を結ぶようです。日本の支店400と海外の80支店

みずほと東京三菱の日本のメガバンク2行はRippleに入れ込んでます