Create index.js

index.js

@@ -0,0 +1,42 @@
+import express from 'express';
+import cors from 'cors';
+import * as  snarkjs from 'snarkjs';
+import fs from 'fs';
+
+const app = express();
+app.use(cors());
+app.use(express.json({ limit: '10mb' }));
+
+app.post('/verify', async (req, res) => {
+  try {
+    const { zkProof, publicSignals, walletPublicKey } = req.body;
+
+    console.log("Received ZK proof for verification");
+    console.log("Wallet:", walletPublicKey);
+
+    const vKey = JSON.parse(fs.readFileSync('verification_key.json', 'utf8'));
+    
+    console.log("Starting verification...");
+    const startTime = Date.now();
+    
+    const isValid = await snarkjs.groth16.verify(vKey, publicSignals, zkProof);
+    
+    const endTime = Date.now();
+    console.log(`Verification complete in ${endTime - startTime}ms:`, isValid);
+
+    res.json({
+      valid: isValid,
+      wallet: walletPublicKey,
+      verificationTime: endTime - startTime,
+      message: isValid ? "ZK proof verified!" : "Invalid proof"
+    });
+
+  } catch (error) {
+    console.error("Verification error:", error);
+    res.status(500).json({ valid: false, error: error.message });
+  }
+});
+
+app.listen(7860, () => {
+  console.log('ZK Verification server running on 7860');
+});