a bit of blocky

DownUnderCTF 2023/blockchain/Eight Five Four Five/EightFiveFourFive.sol

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.19;
+
+contract EightFiveFourFive {
+    string private use_this;
+    bool public you_solved_it = false;
+
+    constructor(string memory some_string) {
+        use_this = some_string;
+    }
+
+    function readTheStringHere() external view returns (string memory) {
+        return use_this;
+    }
+
+    function solve_the_challenge(string memory answer) external {
+        you_solved_it = keccak256(bytes(answer)) == keccak256(bytes(use_this));
+    }
+
+    function isSolved() external view returns (bool) {
+        return you_solved_it;
+    }
+}