Australia’s main stock exchange has said it will use blockchain, the technology behind cryptocurrency bitcoin, to process its equities transactions in a shift touted as a world-first for a major financial institution.

S Australia’s main stock exchange 証券取引所
V [has said]

S it
V [will use]
O blockchain ブロックチェーン

補足
, the technology behind (cryptocurrency) bitcoin,
ビットコイン(仮想通貨)

V [to process]
O its equities transactions
株取引の処理のため

補足
[in] a shift
→どんな [touted] [as] a world-first 世界初
[for] a major financial institution.