diff --git a/.changeset/verify-status-apikey-quote.md b/.changeset/verify-status-apikey-quote.md
new file mode 100644
index 00000000000..6e1644e90f7
--- /dev/null
+++ b/.changeset/verify-status-apikey-quote.md
@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+checkVerificationStatus sends the explorer API key without a trailing double quote
diff --git a/packages/thirdweb/src/contract/verification/index.test.ts b/packages/thirdweb/src/contract/verification/index.test.ts
new file mode 100644
index 00000000000..4a92bd366a1
--- /dev/null
+++ b/packages/thirdweb/src/contract/verification/index.test.ts
@@ -0,0 +1,39 @@
+import { HttpResponse, http } from "msw";
+import { setupServer } from "msw/node";
+import { afterAll, afterEach, beforeAll, describe, expect, it } from "vitest";
+import { checkVerificationStatus } from "./index.js";
+
+const server = setupServer();
+
+describe("checkVerificationStatus", () => {
+  beforeAll(() => server.listen({ onUnhandledRequest: "error" }));
+  afterAll(() => server.close());
+  afterEach(() => server.resetHandlers());
+
+  it("sends the API key unchanged", async () => {
+    let apikey: string | null = null;
+    server.use(
+      http.get("https://api.etherscan.test/api", ({ request }) => {
+        apikey = new URL(request.url).searchParams.get("apikey");
+        return HttpResponse.json({
+          message: "OK",
+          result: "Pass - Verified",
+          status: "1",
+        });
+      }),
+    );
+
+    const result = await checkVerificationStatus({
+      explorerApiKey: "TEST_API_KEY",
+      explorerApiUrl: "https://api.etherscan.test/api",
+      guid: "test-guid",
+    });
+
+    expect(apikey).toBe("TEST_API_KEY");
+    expect(result).toEqual({
+      message: "OK",
+      result: "Pass - Verified",
+      status: "1",
+    });
+  }, 10_000);
+});
diff --git a/packages/thirdweb/src/contract/verification/index.ts b/packages/thirdweb/src/contract/verification/index.ts
index d6ae811eca6..b41d8c42dcf 100644
--- a/packages/thirdweb/src/contract/verification/index.ts
+++ b/packages/thirdweb/src/contract/verification/index.ts
@@ -209,7 +209,7 @@ type CheckVerificationStatusOptions = {
 export async function checkVerificationStatus(
   options: CheckVerificationStatusOptions,
 ): Promise<unknown> {
-  const endpoint = `${options.explorerApiUrl}?module=contract&action=checkverifystatus&guid=${options.guid}&apikey=${options.explorerApiKey}"`;
+  const endpoint = `${options.explorerApiUrl}?module=contract&action=checkverifystatus&guid=${options.guid}&apikey=${options.explorerApiKey}`;
   return new Promise((resolve, reject) => {
     const intervalId = setInterval(async () => {
       try {