diff --git a/index.js b/index.js
index 6ec1700..64e7152 100644
--- a/index.js
+++ b/index.js
@@ -71,3 +71,70 @@ async function initializeKredits () {
   return kredits;
 }
 
+async function generateContributionData(reviews, Contributor) {
+  const contributors = await Contributor.all();
+
+  const contributionData = {};
+
+  for (const [username, giteaReviews] of Object.entries(reviews.gitea)) {
+    const contributor = contributors.find(c => {
+      return c.gitea_username === username;
+    });
+
+    if (!contributor) {
+      console.log(`Could not find contributor for Gitea username ${username}`);
+      continue;
+    }
+
+    const urls = giteaReviews.map(review => review.pr.html_url);
+    const kreditsAmount = giteaReviews.reduce((amount, review) => {
+      return review.kredits + amount;
+    }, 0);
+
+    contributionData[contributor.name] = {
+      contributorId: contributor.id,
+      contributorIpfsHash: contributor.ipfsHash,
+      kind: 'dev',
+      amount: kreditsAmount,
+      description: 'PR reviews',
+      details: {
+        'pullRequests': urls
+      }
+    }
+  }
+
+  for (const [username, githubReviews] of Object.entries(reviews.github)) {
+    const contributor = contributors.find(c => {
+      return c.github_username === username;
+    });
+
+    if (!contributor) {
+      console.log(`Could not find contributor for Github username ${username}`);
+      continue;
+    }
+
+    const urls = githubReviews.map(review => review.pr.html_url);
+    const kreditsAmount = githubReviews.reduce((amount, review) => {
+      return review.kredits + amount;
+    }, 0);
+
+    if (typeof contributionData[contributor.name] !== 'undefined') {
+      contributionData[contributor.name].amount += kreditsAmount;
+      contributionData[contributor.name].details.pullRequests.push(...urls);
+    } else {
+      contributionData[contributor.name] = {
+        contributorId: contributor.id,
+        contributorIpfsHash: contributor.ipfsHash,
+        kind: 'dev',
+        amount: kreditsAmount,
+        description: 'PR reviews',
+        details: {
+          'pullRequests': urls
+        }
+      }
+    }
+  }
+
+  return contributionData;
+}
+