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"A security researcher said on Thursday he was the first to crack the code embedded in the seal of the U.S. Cyber Command (Cybercom), the group responsible for protecting the country's military networks from attack."

"A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution. Digital signatures provide part of the solution, but the main benefits are lost if a trusted third party is still required to prevent double-spending. We propose a solution to the double-spending problem using a peer-to-peer network."