diff --git a/src/components/common/__tests__/CopyField.clipboard.test.tsx b/src/components/common/__tests__/CopyField.clipboard.test.tsx
new file mode 100644
index 0000000..4b17468
--- /dev/null
+++ b/src/components/common/__tests__/CopyField.clipboard.test.tsx
@@ -0,0 +1,43 @@
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import CopyField from '../CopyField';
+
+const FULL_ADDRESS = 'GAAZI4TCR3TY5OJHCTJC2A4QSY6CJWJH5IAJTGKIN2ER7LBNVKOCCWNA';
+
+describe('CopyField — clipboard integration', () => {
+	beforeEach(() => {
+		Object.assign(navigator, {
+			clipboard: {
+				writeText: vi.fn().mockResolvedValue(undefined),
+			},
+		});
+	});
+
+	it('copies the full unmasked wallet address to the clipboard', async () => {
+		const user = userEvent.setup();
+		render(<CopyField value={FULL_ADDRESS} label="Wallet address" />);
+
+		await user.click(screen.getByRole('button', { name: /copy wallet address/i }));
+
+		expect(navigator.clipboard.writeText).toHaveBeenCalledOnce();
+		expect(navigator.clipboard.writeText).toHaveBeenCalledWith(FULL_ADDRESS);
+	});
+
+	it('does not copy a shortened or ellipsis form of the address', async () => {
+		const user = userEvent.setup();
+		render(<CopyField value={FULL_ADDRESS} label="Wallet address" />);
+
+		await user.click(screen.getByRole('button', { name: /copy wallet address/i }));
+
+		const copied = (navigator.clipboard.writeText as ReturnType<typeof vi.fn>).mock.calls[0][0] as string;
+		expect(copied).not.toContain('...');
+		expect(copied).toBe(FULL_ADDRESS);
+	});
+
+	it('passes the full value through the input display field', () => {
+		render(<CopyField value={FULL_ADDRESS} label="Wallet address" />);
+		const input = screen.getByRole('textbox', { name: /wallet address/i });
+		expect((input as HTMLInputElement).value).toBe(FULL_ADDRESS);
+	});
+});