if you understand basic blockchain mechanics you mind understa | EthereumPay News

if you understand basic blockchain mechanics you mind understand this portion of our white paper:


ePay allows the contract to do in one transaction what would otherwise (in the general case) require two. The keyword performs marks the effects of the function; when calling the function, the caller first revokes any existing offers and subsequently offers to give exactly amount tokens to the spender; the call to onApprovalReceived will then perform the offered exchange.