> ## Documentation Index
> Fetch the complete documentation index at: https://docs.topsort.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Simplify third-party verification for banner ads

> A new JavaScript helper library handles verification tag insertion and consent gating, reducing custom storefront code.

export const ChangelogActions = () => {
  return <>
      <style>{`
        .changelog-actions {
          display: flex;
          justify-content: center;
          gap: 12px;
          margin-top: 2rem;
          padding-top: 1.5rem;
          border-top: 1px solid #e5e7eb;
        }
        
        [data-theme="dark"] .changelog-actions {
          border-top-color: #374151;
        }
        
        .changelog-btn {
          display: inline-flex;
          align-items: center;
          gap: 6px;
          padding: 8px 16px;
          border-radius: 9999px;
          border: 1px solid #d1d5db;
          background: transparent;
          color: #6b7280;
          font-size: 14px;
          cursor: pointer;
          transition: all 0.2s ease;
        }
        
        .changelog-btn:hover {
          border-color: #9ca3af;
          background: #f9fafb;
        }
        
        [data-theme="dark"] .changelog-btn {
          border-color: #4b5563;
          color: #9ca3af;
        }
        
        [data-theme="dark"] .changelog-btn:hover {
          border-color: #6b7280;
          background: #1f2937;
        }
      `}</style>
      <div className="changelog-actions">
        <button className="changelog-btn" onClick={() => {
    const btn = event.target.closest("button");
    btn.innerHTML = "❤️ Like";
    btn.style.borderColor = "#ec4899";
  }}>
          🤍 Like
        </button>
        <button className="changelog-btn" onClick={() => {
    const btn = event.target.closest("button");
    navigator.clipboard.writeText(window.location.href);
    const originalContent = btn.innerHTML;
    btn.innerHTML = "✓ Copied";
    btn.style.borderColor = "#22c55e";
    btn.style.color = "#22c55e";
    setTimeout(() => {
      btn.innerHTML = originalContent;
      btn.style.borderColor = "";
      btn.style.color = "";
    }, 2000);
  }}>
          ↗ Share
        </button>
      </div>
    </>;
};

<div style={{ display: "flex", gap: "8px", flexWrap: "wrap", marginBottom: "16px" }}>
  <Badge color="gray" size="sm" icon="calendar">September 22, 2026</Badge>
  <Badge color="blue" size="sm" icon="rectangle-ad">Ad Platform</Badge>
  <Badge color="green" size="sm" icon="sparkles">New Feature</Badge>
</div>

## What’s New

Marketplaces can now more easily support advertisers who use third-party providers to independently verify whether their banner ads rendered and were viewable. The new `@topsort/verification` JavaScript library inserts verification scripts into rendered banners after the shopper grants consent through the marketplace’s existing Consent Management Platform (CMP).

The library provides registration replacement, lifecycle cleanup, bounded diagnostics, and an optional React callback-ref helper. The initial release supports custom web banner renderers and IAS monitoring tags. Automatic Banners.js integration is not included in `0.1.0`.

Topsort already supports carrying third-party verification tags through JSON banner templates. This release simplifies the storefront implementation.

## Get started

Install `@topsort/verification` from npm. See [Third-party verification helper library](/en/ad-platform/banners/third-party-verification) for the supported boundary and setup instructions.

<ChangelogActions />