1. Adding your desktop CMP tag

Go to https://www.quantcast.com/gdpr/consent-management-solution/
Sign up
Fill in the form:
Save your changes
After your site is added, generate the tag
Copy the tag and put it in the header section of html for your website, this allows you to gather users’ consent before any other tags are loaded.

2. Google ad requests integration

Adding Google as a Non-IAB vendor

After the Quantcast script is added to your webpage, the next step is to make Google capable of reading the consent the user has given. In order to manage that, you must add Google as a non-IAB Vendor. To accomplish that, you have to go to your Quantcast GDPR Vendors page and take the following steps.

Click on Non-IAB Vendors tab.
Click on add a vendor in order to set up a new vendor.
Fill in the fields with the data required to identify Google. Here is an example:
Vendor name: Google
Vendor Description: Add the purposes you want to provide that will appear on the CMP. Examples include those approved by Google here, such as 'Store and/or access information on a device (Purpose 1)', or 'Create a personalized ads profile (Purposes 3)'
Vendor Privacy Policy: https://policies.google.com/technologies/partner-sites
Click on save vendor in order to save the data.
Check the Non-IAB Vendor ID and keep it, because you will have to use it later.

Integrating consent with Google ads

To make Google capable of reading the user's consent and loading the ads, you will have to use the TCF Version 2 API and custom CMP commands for Quantcast:

useractioncomplete event to know when the consent is completely ready to be used
getNonIABVendorConsents command through __tcfapi in order to retrieve the consent for non-IAB vendors

Here is an example of a script that integrates consent with Google Ads. Click the image below to access the code.