Smart contracts are computer programs that run on blockchains and carry out agreements automatically, like a vending machine that releases a product once payment is made. Today they power cryptocurrency payments, online lending and exchange services, digital collectibles and more, often holding large sums of money directly.Smart contracts are computer programs that run on blockchains and carry out agreements automatically, like a vending machine that releases a product once payment is made. Today they power cryptocurrency payments, online lending and exchange services, digital collectibles and more, often holding large sums of money directly.Software[#item_full_content]