diff --git a/blockchain_development_integration/pi_network/smart_contracts/DecentralizedIdentity.sol b/blockchain_development_integration/pi_network/smart_contracts/DecentralizedIdentity.sol
new file mode 100644
index 000000000..4712384cb
--- /dev/null
+++ b/blockchain_development_integration/pi_network/smart_contracts/DecentralizedIdentity.sol
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract DecentralizedIdentity {
+    struct Identity {
+        string name;
+        string email;
+        string phone;
+        bool exists;
+    }
+
+    mapping(address => Identity) public identities;
+
+    function createIdentity(string memory name, string memory email, string memory phone) external {
+        require(!identities[msg.sender].exists, "Identity already exists");
+        identities[msg.sender] = Identity(name, email, phone, true);
+    }
+
+    function updateIdentity(string memory name, string memory email, string memory phone) external {
+        require(identities[msg.sender].exists, "Identity does not exist");
+        identities[msg.sender].name = name;
+        identities[msg.sender].email = email;
+        identities[msg.sender].phone = phone;
+    }
+
+    function getIdentity(address user) external view returns (string memory, string memory, string memory) {
+        require(identities[user].exists, "Identity does not exist");
+        Identity memory identity = identities[user];
+        return (identity.name, identity.email, identity.phone);
+    }
+}