Create IdentityVerifier.java

sidra_chain_integration/project/sidra_nexus/src/IdentityVerifier.java

@@ -0,0 +1,25 @@
+package com.sidra.nexus;
+
+import org.web3j.abi.datatypes.Address;
+import org.web3j.abi.datatypes.Uint256;
+import org.web3j.protocol.Web3j;
+import org.web3j.protocol.core.methods.response.TransactionReceipt;
+import org.web3j.protocol.http.HttpService;
+
+public class IdentityVerifier {
+    private Web3j web3j;
+
+    public IdentityVerifier() {
+        // Set up Web3j for blockchain interactions
+        web3j = Web3j.build(new HttpService("https://mainnet.infura.io/v3/YOUR_PROJECT_ID"));
+    }
+
+    public boolean verifyIdentity(String userId, String identityHash) {
+        // Verify identity using blockchain-based smart contract
+        Address contractAddress = new Address("0x..."); // Replace with your smart contract address
+        Uint256 identityHashUint = new Uint256(identityHash);
+
+        TransactionReceipt transactionReceipt = web3j.executeTransaction(contractAddress, "verifyIdentity", userId, identityHashUint);
+        return transactionReceipt.getStatus().equals("0x1"); // 0x1 indicates success
+    }
+}