diff --git a/blockchain_integration/pi_network/pi-stablecoin/contracts/ReputationSystem.sol b/blockchain_integration/pi_network/pi-stablecoin/contracts/ReputationSystem.sol
new file mode 100644
index 000000000..8a8ebcf02
--- /dev/null
+++ b/blockchain_integration/pi_network/pi-stablecoin/contracts/ReputationSystem.sol
@@ -0,0 +1,72 @@
+pragma solidity ^0.8.0;
+
+import "./ReputationValidator.sol";
+import "./ReputationScoreCalculator.sol";
+
+contract ReputationSystem {
+    // Mapping of user addresses to their reputation scores
+    mapping (address => uint256) public reputationScores;
+
+    // Mapping of user addresses to their reputation validators
+    mapping (address => ReputationValidator[]) public reputationValidators;
+
+    // Event emitted when a user's reputation score is updated
+    event ReputationScoreUpdated(address indexed user, uint256 newScore);
+
+    // Event emitted when a user's reputation validator is added
+    event ReputationValidatorAdded(address indexed user, ReputationValidator validator);
+
+    // Event emitted when a user's reputation validator is removed
+    event ReputationValidatorRemoved(address indexed user, ReputationValidator validator);
+
+    // Constructor
+    constructor() public {
+        // Initialize the reputation score calculator
+        reputationScoreCalculator = new ReputationScoreCalculator();
+    }
+
+    // Function to add a reputation validator for a user
+    function addReputationValidator(address user, ReputationValidator validator) public {
+        // Check if the user is valid
+        require(user != address(0), "Invalid user");
+
+        // Add the reputation validator to the user's list
+        reputationValidators[user].push(validator);
+
+        // Emit the ReputationValidatorAdded event
+        emit ReputationValidatorAdded(user, validator);
+    }
+
+    // Function to remove a reputation validator for a user
+    function removeReputationValidator(address user, ReputationValidator validator) public {
+        // Check if the user is valid
+        require(user != address(0), "Invalid user");
+
+        // Remove the reputation validator from the user's list
+        for (uint256 i = 0; i < reputationValidators[user].length; i++) {
+            if (reputationValidators[user][i] == validator) {
+                reputationValidators[user][i] = reputationValidators[user][reputationValidators[user].length - 1];
+                reputationValidators[user].pop();
+                break;
+            }
+        }
+
+        // Emit the ReputationValidatorRemoved event
+        emit ReputationValidatorRemoved(user, validator);
+    }
+
+    // Function to update a user's reputation score
+    function updateReputationScore(address user) public {
+        // Check if the user is valid
+        require(user != address(0), "Invalid user");
+
+        // Calculate the new reputation score
+        uint256 newScore = reputationScoreCalculator.calculateReputationScore(user, reputationValidators[user]);
+
+        // Update the user's reputation score
+        reputationScores[user] = newScore;
+
+        // Emit the ReputationScoreUpdated event
+        emit ReputationScoreUpdated(user, newScore);
+    }
+}