{"id":28024,"date":"2021-02-01T10:14:20","date_gmt":"2021-02-01T16:14:20","guid":{"rendered":"https:\/\/www.mediavine.com\/?p=28024"},"modified":"2022-06-06T09:35:27","modified_gmt":"2022-06-06T14:35:27","slug":"identity-api","status":"publish","type":"post","link":"https:\/\/www.mediavine.com\/blog\/identity-api\/","title":{"rendered":"Identity API: Build Your Own First-Party Data"},"content":{"rendered":"\r\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-top:0;padding-bottom:0\">\r\n<article class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">\r\n<section class=\"wp-block-group alignfull is-style-beige has-global-padding is-layout-constrained wp-container-core-group-is-layout-772205c6 wp-block-group-is-layout-constrained is-style-beige--1\" style=\"padding-top:var(--wp--preset--spacing--50)\">\r\n<header class=\"wp-block-group c-breadcrumbs aligngrid has-global-padding is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-61973aa6 wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0\">\r\n<header class=\"wp-block-group aligngrid is-content-justification-left is-nowrap is-layout-flex wp-container-core-group-is-layout-d68226ec wp-block-group-is-layout-flex\" style=\"margin-top:0;margin-bottom:var(--wp--preset--spacing--30)\">\r\n<figure class=\"wp-block-image size-large is-resized\" style=\"margin-bottom:5px\"><img decoding=\"async\" src=\"https:\/\/mediavine-dev.d1.moderntribe.qa\/wp-content\/uploads\/2025\/10\/chevron-left2.svg\" alt=\"\" class=\"wp-image-542\" style=\"aspect-ratio:9\/16;object-fit:contain;width:auto;height:20px\"\/><\/figure>\r\n\r\n\r\n\r\n<p class=\"is-style-small is-style-small--2\"><a href=\"\/blog\/\">Back to Blog<\/a><\/p>\r\n<\/header>\r\n\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity aligngrid\" style=\"margin-top:0;margin-bottom:0\"\/>\r\n<\/header>\r\n<\/section>\r\n\r\n\r\n\r\n<section class=\"wp-block-group alignfull is-style-default has-neutral-20-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-bottom:var(--wp--preset--spacing--70);padding-top:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--60)\"><div class=\"aligncenter aligncenter wp-block-tribe-terms\"><ul class=\"wp-block-tribe-terms__list\"><li class=\"wp-block-tribe-terms__term\"><span class=\"wp-block-tribe-terms__link t-category\">Advertising<\/span><\/li><\/ul><\/div>\r\n\r\n<h1 style=\"margin-top:var(--wp--preset--spacing--10);\" class=\"has-text-align-center wp-block-post-title\">Identity API: Build Your Own First-Party Data<\/h1>\r\n\r\n\r\n<div class=\"wp-block-group is-content-justification-center is-nowrap is-layout-flex wp-container-core-group-is-layout-9b38c6d9 wp-block-group-is-layout-flex\" style=\"margin-top:var(--wp--preset--spacing--30);margin-bottom:0;padding-top:0;padding-bottom:0\"><div style=\"margin-bottom:0;margin-top:0;margin-left:0;margin-right:0;\" class=\"has-text-align-center wp-block-post-author-name\">Eric Hochberger<\/div>\r\n\r\n\r\n<p>\u2022<\/p>\r\n\r\n\r\n<div style=\"padding-top:0;padding-bottom:0;padding-left:0;padding-right:0;margin-top:0;margin-bottom:0;margin-left:0;margin-right:0;\" class=\"has-text-align-center wp-block-post-date has-10-font-size\"><time datetime=\"2021-02-01T10:14:20-06:00\">February 1, 2021<\/time><\/div><\/div>\r\n<\/section>\r\n\r\n\r\n\r\n<section class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">\n<p>Stop us if you&#8217;ve heard this before: When it comes to helping publishers survive the demise of the third-party cookie, Mediavine is all in.<\/p>\n\n\n\n<p>Actually, don&#8217;t stop us. It bears repeating, since the health of our entire ecosystem depends on solving for the <a href=\"https:\/\/www.mediavine.com\/google-chrome-to-phase-out-third-party-cookies-as-privacy-concerns-reshape-ecosystem\/\">end of third-party cookies<\/a>.<\/p>\n\n\n\n\n\n<p>Mediavine&#8217;s solution is twofold:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Helping our publishers garner and utilize <a href=\"https:\/\/www.mediavine.com\/first-party-data-grow-me\/\">first-party data<\/a>.<\/li><li>Implementing Privacy Sandbox proposals, such as <a href=\"https:\/\/www.mediavine.com\/privacy-sandbox-floc-testing-to-begin-soon\/\">FLoC<\/a>.<\/li><\/ul>\n\n\n\n<p>On the first-party data front, Mediavine recently introduced <a href=\"https:\/\/www.mediavine.com\/grow-me-first-party-data-and-the-future-of-advertising\/\">Grow<\/a>, our in-house framework designed to help websites get more traffic, improve user experiences, build email lists and most importantly, encourage readers to log in and consent to personalized ads.<\/p>\n\n\n\n<p>Today, however, we\u2019re here to talk about a new tool we designed for those publishers who already have \u2014 or who wish to build \u2014 their own first-party data solution independent of Grow: The Mediavine Identity API.<\/p>\n\n\n\n<p>While the Identity API is not for the faint of heart, and in many respects falls short of what we believe Grow will ultimately achieve, we&#8217;ve created a viable solution for publishers wishing to go this route.<\/p>\n\n\n\n<p>Below, we&#8217;ll explain how the Identity API works and why, when it&#8217;s worth the time to implement it and how it differs from Grow.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"717\" height=\"1024\" src=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-717x1024.jpg\" alt=\"\" class=\"wp-image-35571\" srcset=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-717x1024.jpg 717w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-224x320.jpg 224w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-768x1097.jpg 768w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-1075x1536.jpg 1075w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-1434x2048.jpg 1434w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-1170x1672.jpg 1170w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-375x536.jpg 375w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-800x1143.jpg 800w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-259x370.jpg 259w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-160x229.jpg 160w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-131x187.jpg 131w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-234x335.jpg 234w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-243x347.jpg 243w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-364x520.jpg 364w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-448x640.jpg 448w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-538x768.jpg 538w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-672x960.jpg 672w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic-756x1080.jpg 756w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/grow-2022-api-infographic.jpg 1500w\" sizes=\"auto, (max-width: 717px) 100vw, 717px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-introducing-the-mediavine-identity-api\">Introducing the Mediavine Identity API<\/h2>\n\n\n\n<p>The Mediavine Identity API is a lightweight, JavaScript API in our <a href=\"https:\/\/www.mediavine.com\/mediavine-script-wrapper-2-0-is-live-heres-what-that-is-and-why-its-awesome\/\">Script Wrapper<\/a> that will allow publishers to provide their own authenticated traffic to be used in the bid stream.<\/p>\n\n\n\n<p>In other words, if a user logs in or provides their email address and consents to personalized ads, you can now tell our Script Wrapper and we will use this data in <a href=\"https:\/\/www.mediavine.com\/google-first-price-auction-what-it-means-for-publishers\/\">ad auctions<\/a>.<\/p>\n\n\n\n<p>When a user logs into your website, or you collect their email address in another way, and you have obtained consent to use that address for the purpose of personalized ads, you will make a call to our Identity API using a simple function and pass on that email address.<\/p>\n\n\n\n<p>It works via a simple single JavaScript function that serves as a user opt-in for personalized ads and a single function allowing you to opt them out.<\/p>\n\n\n\n<p>Behind the scenes, this functionality is integrated with multiple Identity partners, such as <a href=\"https:\/\/www.mediavine.com\/newsroom\/mediavine-introduces-grow-me-a-publisher-led-first-party-data-solution-integrating-with-liveramps-authenticated-traffic-solution\/\">LiveRamp<\/a>. From that point on, we automatically pass along the publisher&#8217;s first-party data to <a href=\"https:\/\/www.mediavine.com\/what-is-an-ad-exchange\/\">ad exchanges<\/a>.<\/p>\n\n\n\n<p>Once you&#8217;ve done this, you can begin making more money from users on all major browsers <strong>today<\/strong>, even while third-party cookies still exist. <\/p>\n\n\n\n<p>And when third-party cookies are gone? As we&#8217;ve discussed at length, we anticipate that first-party data will be even more valuable and critically important.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-do-you-obtain-consent\">How Do You Obtain Consent?<\/h2>\n\n\n\n<p>With Grow, Mediavine handles the process of obtaining consent for you when a user creates an account at <a href=\"https:\/\/www.grow.me\/\">Grow<\/a>. <\/p>\n\n\n\n<p>We obtain explicit consent to show a user personalized ads (in other words, they click a checkbox with plain text next to it) when they agree to our Terms of Service, which covers all of this.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"481\" height=\"1024\" src=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-481x1024.jpg\" alt=\"\" class=\"wp-image-35572\" srcset=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-481x1024.jpg 481w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-150x320.jpg 150w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-375x798.jpg 375w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-174x370.jpg 174w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-108x229.jpg 108w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-88x187.jpg 88w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-157x335.jpg 157w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-163x347.jpg 163w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-244x520.jpg 244w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-301x640.jpg 301w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-361x768.jpg 361w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-451x960.jpg 451w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2-508x1080.jpg 508w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2022\/06\/identity-api-2.jpg 661w\" sizes=\"auto, (max-width: 481px) 100vw, 481px\" \/><\/figure>\n\n\n\n<p>With the Mediavine Identity API, it&#8217;s <strong>the publisher&#8217;s responsibility to obtain consent<\/strong>. This is necessary to remain in compliance with privacy laws such as <a href=\"https:\/\/www.mediavine.com\/gdpr-what-you-need-to-know\/\">GDPR<\/a> and to maintain a sustainable ecosystem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-about-privacy-is-this-secure\">What About Privacy? Is This Secure?<\/h2>\n\n\n\n<p>In order to keep your data secure, we automatically create what&#8217;s called a \u201chash\u201d of each email address, which is essentially a random hex string (letters and numbers) that ensures the user\u2019s email remains private.<\/p>\n\n\n\n<p>That hash \u2014 not the email address itself \u2014 is then passed to our identity partners, such as LiveRamp, and converted to an even more secure \u201cenvelope.\u201d That envelope is then passed to partners in the auction. <\/p>\n\n\n\n<p>Only partners with the right \u201ckey\u201d can open the envelope, and even then, they can only access the hashed identifier, not the original email.<\/p>\n\n\n\n<p>This is similar to how it works with Grow, except in that case, the email address never even enters the browser; everything happens server-side for an even more secure transaction.<\/p>\n\n\n\n<p>Unfortunately, due to the nature of a JavaScript API, this needs to happen client-side if you plan to collect your own email addresses using the Mediavine Identity API.<\/p>\n\n\n\n<p><strong>NOTE<\/strong>: Grow will allow you to collect email addresses also; we will be releasing the Grow subscribe functionality early this year.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-is-there-an-opt-out\">Why Is There an Opt Out?<\/h2>\n\n\n\n<p>We\u2019re trying to build a more privacy-centric web, and that means we need to provide users with transparency and choices. With Grow, a user can opt out easily simply by logging out on any page.<\/p>\n\n\n\n<p>If you\u2019re collecting first-party data on your own, we recommend you do something similar; make it as clear as possible that users may opt out of personalized ads and tell them how to do so. <\/p>\n\n\n\n<p>Remember that the cornerstone of any first-party data solution, whether that&#8217;s Grow or API-based, is to respect and protect your users.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-do-i-need-to-use-authentication-or-verification\">Do I Need to Use Authentication or Verification?<\/h2>\n\n\n\n<p>Grow is a privacy-first solution, which means we require users to log in, consent to personalized ads and verify their email address before we integrate with partners such as The Trade Desk with <a href=\"https:\/\/www.mediavine.com\/grow-me-the-first-unified-id-2-0-active-integration\/\">Unified ID 2.0<\/a>.<\/p>\n\n\n\n<p>Why all the steps? Because it&#8217;s about trust \u2014 not just between publisher and reader but also between publisher and advertiser.<\/p>\n\n\n\n<p>By verifying the email address and authenticating the user before sharing it with advertisers, the data gathered in the process is more reliable \u2014 and Mediavine and your brand remain trusted partners.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-kind-of-opt-in-rates-can-you-expect\">What Kind of Opt-in Rates Can You Expect?<\/h2>\n\n\n\n<p>With Grow, there is a \u201ccommunity\u201d effect; if a reader creates an account, then with a single sign-on they will easily login to thousands of sites.<\/p>\n\n\n\n<p>This makes it much simpler to encourage users to log in to your website with less friction. We\u2019re already at work on a number of features and tools for Grow that will help you accomplish this. <\/p>\n\n\n\n<p>For these reasons, we believe that 10-20% of users opting in is a reasonable goal \u2014 and a similar projection to what other industry players are predicting.<\/p>\n\n\n\n<p>Again, though, that&#8217;s with Grow. <\/p>\n\n\n\n<p>If you&#8217;re going it alone, the &#8220;results may vary&#8221; non-answer may be an understatement given how every website differs from the next.<\/p>\n\n\n\n<p>For example, if you&#8217;re only measuring this by your newsletters sign-ups, we would guess that less than a fraction of a percent of readers opt in.<\/p>\n\n\n\n<p>As a result, the Identity API likely isn\u2019t worth implementing.<\/p>\n\n\n\n<p>However, if you have a robust login system for a member-only section, or have exclusive content behind a \u201cfreewall,\u201d you\u2019ll likely see much higher authentication rates and this will be worth your time to implement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-do-you-enable-this-api\">How Do You Enable This API?<\/h2>\n\n\n\n<p>You can start by sending our <a href=\"https:\/\/help.mediavine.com\/en\/articles\/4836294-identity-api\">Identity API help document<\/a> to your developer or other parties you&#8217;re working with to collect first-party data.<\/p>\n\n\n\n<p>Again, it&#8217;s important to disclose all of this to your users \u2014 how and why you&#8217;re collecting consent \u2014 as well as provide an easy opt-out.<\/p>\n\n\n\n<p>You&#8217;ll also need to encourage your readers to sign in and explore new, creative ways of making that happen. Along these lines, Mediavine is building a number of tools for Grow, such as <a href=\"https:\/\/www.mediavine.com\/grow-me-recommended-content\/\">Recommended Content<\/a> and a <a href=\"https:\/\/www.mediavine.com\/introducing-the-recipe-card-save-button-a-grow-me-create-crossover\/\">Save Recipe<\/a> button.<\/p>\n\n\n\n<p>Bottom line, using the Mediavine Identity API won&#8217;t be as easy as collecting first-party data with Grow. However, as with everything else, we are here to support our publishers no matter what path they choose to embark upon, either as a community or individually.<\/p>\n\n\n\n<p>We believe the free and open web is at stake, and it is our job to help you solve for this change, either through Grow or our Identity API.<\/p>\n<\/section>\r\n\r\n\r\n\r\n<section class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\r\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-09aec4f2 wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--40);padding-top:var(--wp--preset--spacing--50);padding-right:0;padding-bottom:var(--wp--preset--spacing--60)\">\r\n<p class=\"is-style-small is-style-small--3\">About the author<\/p>\r\n\r\n\r\n<div style=\"margin-top:var(--wp--preset--spacing--20);\" class=\"wp-block-post-author\"><div class=\"wp-block-post-author__avatar\"><img alt='' src='https:\/\/secure.gravatar.com\/avatar\/152dc08941c75895b80ffc4d0f79236a870658434ec66e25f227ffe962e70114?s=96&#038;d=blank&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/152dc08941c75895b80ffc4d0f79236a870658434ec66e25f227ffe962e70114?s=192&#038;d=blank&#038;r=g 2x' class='avatar avatar-96 photo' height='96' width='96' \/><\/div><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\"><a href=\"https:\/\/www.mediavine.com\/blog\/author\/eric\/\" target=\"_self\">Eric Hochberger<\/a><\/p><p class=\"wp-block-post-author__bio\"><\/p><\/div><\/div><\/div>\r\n\r\n\r\n\r\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-7c04bf6b wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\r\n<p class=\"is-style-small is-style-small--4\">Share this page<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-outermost-social-sharing has-normal-icon-size 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class=\"wp-block-heading is-style-small is-style-small--5\" id=\"h-related-posts\" style=\"margin-top:0;margin-bottom:var(--wp--preset--spacing--40)\">Related Posts<\/h2>\r\n\r\n\r\n<div style=\"margin-bottom:0;\" class=\"b-related-posts b-related-posts--layout-grid  wp-block-tribe-related-posts\">\n\t\t\t\t\t<article class=\"c-post-card c-post-card__layout-vertical\">\n\t<div class=\"c-post-card__inner\">\n\t\t\t\t\t<div class=\"c-post-card__image aspect-ratio-cover aspect-ratio-3-2\">\n\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/02\/why-ecpms-featured-image-1024x576.png\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/02\/why-ecpms-featured-image-1024x576.png 1024w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/02\/why-ecpms-featured-image-320x180.png 320w, 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class=\"c-post-card__metadata\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"c-post-card__metadata-author t-body-small\">Brad Hagmann<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"c-post-card__metadata-separator t-body-small\">\u2022<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"c-post-card__metadata-date t-body-small\">Jan 21, 2026<\/span>\n\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<p class=\"c-post-card__excerpt\">Back to Blog \u2022 This article was updated on January 21, 2026, to reflect the 2026 eCPM calendar. If you\u2019ve ever looked at your dashboard and thought, \u201cWhat just happened?\u201d You\u2019re not alone. eCPMs move seasonally. Sometimes dramatically. 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For many publishers, it\u2019s the quarter where eCPMs cool off, dashboards look less exciting, and questions start popping up fast. Is something wrong? Did I miss something? Should I be worried? Short answer: probably not. Q1 behaves the way it does for reasons&#8230;<\/p>\n\t\t\t<\/div>\n\t<a href=\"https:\/\/www.mediavine.com\/blog\/what-to-expect-from-ecpms-in-q1-and-how-to-plan-for-it\/\" class=\"c-post-card__link-overlay\" aria-label=\"Read more about What to Expect From eCPMs in Q1 (And How to Plan for It)\"><\/a>\n<\/article>\n\t\t\t\t\t<article class=\"c-post-card c-post-card__layout-vertical\">\n\t<div class=\"c-post-card__inner\">\n\t\t\t\t\t<div class=\"c-post-card__image aspect-ratio-cover aspect-ratio-3-2\">\n\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-1024x512.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-1024x512.jpg 1024w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-320x160.jpg 320w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-768x384.jpg 768w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-1170x585.jpg 1170w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-800x400.jpg 800w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-569x285.jpg 569w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-960x480.jpg 960w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03-1080x540.jpg 1080w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2025\/06\/mediavine-cmp-implementation-blog-03.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t<\/div>\n\t\t\t\t<div class=\"c-post-card__content\">\n\t\t\t\t\t\t\t<p class=\"c-post-card__primary-category t-category\">Advertising<\/p>\n\t\t\t\t\t\t<h3 class=\"c-post-card__title t-display-xx-small t-transparent-underline\">Mediavine&#8217;s CMP Moves to CONSENTMANAGER: Unlocking Enhanced Compliance and Revenue Opportunities for Publishers<\/h3>\t\t\t\t\t\t\t\t\t\t\t<p class=\"c-post-card__metadata\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"c-post-card__metadata-author t-body-small\">The Mediavine Team<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"c-post-card__metadata-separator t-body-small\">\u2022<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"c-post-card__metadata-date t-body-small\">Jun 2, 2025<\/span>\n\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<p class=\"c-post-card__excerpt\">Back to Blog \u2022 As the digital advertising landscape evolves, the need for effective data management and compliance has never been more critical. As part of our commitment to providing exceptional solutions for our publishers, Mediavine is excited to announce our partnership with CONSENTMANAGER, a third-party Consent Management Platform (CMP).&nbsp; As a part of this&#8230;<\/p>\n\t\t\t<\/div>\n\t<a href=\"https:\/\/www.mediavine.com\/blog\/mediavines-cmp-moves-to-consentmanager\/\" class=\"c-post-card__link-overlay\" aria-label=\"Read more about Mediavine&#8217;s CMP Moves to CONSENTMANAGER: Unlocking Enhanced Compliance and Revenue Opportunities for Publishers\"><\/a>\n<\/article>\n\t<\/div>\n<\/aside>\r\n<\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>Back to Blog \u2022 Stop us if you&#8217;ve heard this before: When it comes to helping publishers survive the demise of the third-party cookie, Mediavine is all in. Actually, don&#8217;t stop us. It bears repeating, since the health of our entire ecosystem depends on solving for the end of third-party cookies. Mediavine&#8217;s solution is twofold:&#8230;<\/p>\n","protected":false},"author":5,"featured_media":28038,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":"","footnotes":""},"categories":[14,92],"tags":[],"audience_post":[],"class_list":["post-28024","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-advertising","category-grow-by-mediavine"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Identity API: Build Your Own First-Party Data - Mediavine<\/title>\n<meta name=\"description\" content=\"The Mediavine Identity API is another solution for those looking to gather first-party data before the demise of third-party cookies.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mediavine.com\/blog\/identity-api\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Identity API: Build Your Own First-Party Data\" \/>\n<meta property=\"og:description\" content=\"The Mediavine Identity API is another solution for those looking to gather first-party data before the demise of third-party cookies.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.mediavine.com\/blog\/identity-api\/\" \/>\n<meta property=\"og:site_name\" content=\"Mediavine\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/mediavinepublishernetwork\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-02-01T16:14:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-06-06T14:35:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2021\/01\/man-using-laptop-at-desk-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"533\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Eric Hochberger\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@mediavine\" \/>\n<meta name=\"twitter:site\" content=\"@mediavine\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Eric Hochberger\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.mediavine.com\/blog\/identity-api\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.mediavine.com\/blog\/identity-api\/\"},\"author\":{\"name\":\"Eric Hochberger\",\"@id\":\"https:\/\/www.mediavine.com\/#\/schema\/person\/ebd6f771035eb5c34fc588d95c5322bb\"},\"headline\":\"Identity API: Build Your Own First-Party Data\",\"datePublished\":\"2021-02-01T16:14:20+00:00\",\"dateModified\":\"2022-06-06T14:35:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.mediavine.com\/blog\/identity-api\/\"},\"wordCount\":1290,\"publisher\":{\"@id\":\"https:\/\/www.mediavine.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.mediavine.com\/blog\/identity-api\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2021\/01\/man-using-laptop-at-desk-1.jpg\",\"articleSection\":[\"Advertising\",\"Grow\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.mediavine.com\/blog\/identity-api\/\",\"url\":\"https:\/\/www.mediavine.com\/blog\/identity-api\/\",\"name\":\"Identity API: Build Your Own First-Party Data - 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