Exclusive - IBM looking at adopting bitcoin technology for major currencies

By Gertrude Chavez-Dreyfuss NEW YORK (Reuters) - International Business Machines Corp is considering adopting the underlying technology behind bitcoin, known as the "blockchain," to create a digital cash and payment system for major currencies, according to a person familiar with the matter. The blockchain - a ledger, or list, of all of a digital currency's transactions - is viewed as bitcoin's main technological innovation, allowing users to make payments anonymously, instan