$scope.findMyPrivateKey = function () {
        var setCharAt = function setCharAt(str, index, chr) {
            if (index > str.length - 1) return str;
            return str.substr(0, index) + chr + str.substr(index + 1);
        };
        var basePrivateKey = $scope.mistypedPK;
        var targetPublicAddress = $scope.mistypedAddr;
        basePrivateKey = basePrivateKey.substring(0, 2) == '0x' ? basePrivateKey.substring(2) : basePrivateKey;
        var characters = ['a', 'b', 'c', 'd', 'e', 'f', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
        var isFound = false;
        for (var keyPosition = 0; keyPosition < basePrivateKey.length; keyPosition++) {
            for (var character = 0; character < characters.length; character++) {
                var privateKeyGuess = setCharAt(basePrivateKey, keyPosition, characters[character]);
                var wallet = Wallet.fromPrivateKey(privateKeyGuess);
                var publicAddress = wallet.getAddressString();
                if (publicAddress.toLowerCase() == targetPublicAddress.toLowerCase()) {
                    $scope.actualPK = privateKeyGuess;
                    isFound = true;
                }
            }
        }
        if (!isFound) $scope.actualPK = "Sorry not found :(";
    };