HOUSTON, Nov. 11, 2020 /PRNewswire/ -- vChain Inc (www.vchain.us), the leading Open Source company for immutable ledger solutions, today announces the closing of the acquisition of Opvizor Inc, a U.S.
Payment services giant Mastercard is looking at the use of blockchain for keeping track of consumer payments, newly published patent filings suggest. A blockchain ledger can, in particular, be used to ...
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