diff --git a/.env.example b/.env.example
index f702b46..d23cb2a 100644
--- a/.env.example
+++ b/.env.example
@@ -1,6 +1,3 @@
 # Multicorn API (for newsletter signup and other client-side API calls)
 # Default: https://api.multicorn.ai. Use http://localhost:8080 for local dev.
 NEXT_PUBLIC_API_URL=https://api.multicorn.ai
-
-# Plausible Analytics (privacy-friendly analytics)
-NEXT_PUBLIC_PLAUSIBLE_DOMAIN=multicorn.ai
diff --git a/app/layout.tsx b/app/layout.tsx
index 5560ea8..48057f0 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -59,6 +59,7 @@ export default function RootLayout({ children }: Readonly<{ children: React.Reac
         <PwaMetaTags />
         <ServiceWorkerRegistrar />
         <LaunchGate>{children}</LaunchGate>
+        {/* Domain is encoded in the proxy script URL - no data-domain attribute needed */}
         {process.env.NODE_ENV === 'production' && (
           <>
             <Script
diff --git a/app/shield/page.tsx b/app/shield/page.tsx
index 687ca09..ef5f852 100644
--- a/app/shield/page.tsx
+++ b/app/shield/page.tsx
@@ -367,7 +367,7 @@ export default function ShieldPage() {
               <TrackedCtaLink
                 href="https://app.multicorn.ai/signup"
                 className="inline-flex min-h-[44px] items-center rounded-lg bg-primary px-8 py-3 text-base font-semibold text-white shadow-sm transition-colors hover:bg-primary-dark focus:outline-none focus:ring-2 focus:ring-primary/20 focus:ring-offset-2"
-                eventName="signup_cta_click"
+                eventName="shield_signup_click"
                 eventProps={{ location: 'shield_hero' }}
               >
                 Start for free
@@ -800,7 +800,7 @@ export default function ShieldPage() {
               <TrackedCtaLink
                 href="https://app.multicorn.ai/signup"
                 className="inline-flex min-h-[44px] items-center rounded-lg bg-primary px-8 py-3 text-base font-semibold text-white shadow-sm transition-colors hover:bg-primary-dark focus:outline-none focus:ring-2 focus:ring-primary/20 focus:ring-offset-2"
-                eventName="signup_cta_click"
+                eventName="shield_signup_click"
                 eventProps={{ location: 'shield_bottom_cta' }}
               >
                 Start for free
diff --git a/components/CopyButton.tsx b/components/CopyButton.tsx
index 23f5716..493f940 100644
--- a/components/CopyButton.tsx
+++ b/components/CopyButton.tsx
@@ -1,19 +1,29 @@
 'use client'
 
 import { useState } from 'react'
+import { trackEvent } from '@/lib/plausible'
+
+interface AnalyticsEvent {
+  readonly event: string
+  readonly props?: Record<string, string>
+}
 
 interface CopyButtonProps {
   readonly text: string
   readonly label?: string
+  readonly analyticsEvent?: AnalyticsEvent
 }
 
-export function CopyButton({ text, label = 'Copy to clipboard' }: CopyButtonProps) {
+export function CopyButton({ text, label = 'Copy to clipboard', analyticsEvent }: CopyButtonProps) {
   const [copied, setCopied] = useState(false)
 
   async function handleCopy() {
     try {
       await navigator.clipboard.writeText(text)
       setCopied(true)
+      if (analyticsEvent) {
+        trackEvent(analyticsEvent.event, analyticsEvent.props)
+      }
       setTimeout(() => setCopied(false), 2000)
     } catch {
       setCopied(false)
diff --git a/components/EmailSignupForm.tsx b/components/EmailSignupForm.tsx
index 3b33cfb..130b032 100644
--- a/components/EmailSignupForm.tsx
+++ b/components/EmailSignupForm.tsx
@@ -88,7 +88,7 @@ export function EmailSignupForm({ source: sourceProp }: EmailSignupFormProps = {
       }
 
       setFormState(FORM_STATES.success)
-      trackEvent('email_signup')
+      trackEvent('newsletter_signup')
     } catch {
       setFormState(FORM_STATES.error)
       setSubmitError('Something went wrong. Please try again.')
diff --git a/lib/mdx-blog-components.tsx b/lib/mdx-blog-components.tsx
index 6c511d4..293cb88 100644
--- a/lib/mdx-blog-components.tsx
+++ b/lib/mdx-blog-components.tsx
@@ -26,7 +26,10 @@ export const blogComponents = {
       <div className="mb-6 overflow-hidden rounded-lg border border-border bg-text-primary">
         <div className="flex items-center justify-between border-b border-white/10 px-4 py-2">
           <span className="text-xs text-text-tertiary">{language || 'code'}</span>
-          <CopyButton text={codeText} />
+          <CopyButton
+            text={codeText}
+            analyticsEvent={{ event: 'prompt_copied', props: { category: 'code_block' } }}
+          />
         </div>
         <pre className="overflow-x-auto px-4 py-3">
           <code className="text-sm text-green">{codeText}</code>