Extract signer public key from tx hash

src/app/api/registry/route.ts

@@ -145,7 +145,21 @@ export async function POST(request: NextRequest) {
       const body = await request.json();
       url = body.url;
       txHash = body.txHash;
-      senderPublicKey = body.senderPublicKey;
+
+      const tx = await connection.getParsedTransaction(txHash, 'confirmed');
+      if (!tx) {
+        console.error("Transaction not found.");
+        return NextResponse.json({
+          status: 'error',
+          message: 'Invalid tx hash'
+        }, { status: 400 });
+      }
+
+      const signerKeys = tx.transaction.message.accountKeys
+      .filter(k => k.signer)
+      .map(k => k.pubkey.toBase58());
+
+      senderPublicKey = signerKeys[0];
 
       if (!url || !txHash) {
         return NextResponse.json({

src/app/page.tsx

@@ -53,7 +53,7 @@ export default function Home() {
 
     try {
       // Create the Laconic Registry record (payment verification is done in the API)
-      const result = await createApplicationDeploymentRequest(url, hash, solanaWalletState.publicKey);
+      const result = await createApplicationDeploymentRequest(url, hash);
 
       if (result.status === 'success') {
         setRecordId(result.id);

src/services/registry.ts

@@ -3,7 +3,6 @@ import { CreateRecordResponse } from '../types';
 export const createApplicationDeploymentRequest = async (
   url: string,
   txHash: string,
-  senderPublicKey: string,
 ): Promise<CreateRecordResponse> => {
   try {
     console.log(`Creating deployment request for URL: ${url} with transaction: ${txHash} using ${process.env.NEXT_PUBLIC_SOLANA_TOKEN_SYMBOL} payment`);
@@ -14,7 +13,7 @@ export const createApplicationDeploymentRequest = async (
       headers: {
         'Content-Type': 'application/json',
       },
-      body: JSON.stringify({ url, txHash, senderPublicKey }),
+      body: JSON.stringify({ url, txHash }),
     });
 
     const result = await response.json();