A Traceable Blockchain-Based Vaccination Record Storage and Sharing System

Algorithm 3

The smart contract Verify

	function Verify (string h, string r, string s) public return string result{
	u1 = h/s%n
	u2 = r/s%n
	(x, y) = u1 ∗   + u2 ∗ Q
	if x ==r{
	return “valid”
	}else{
	return “invalid”
	}
	}