diff --git a/app/models/contributor.js b/app/models/contributor.js
index 7840199..ebe41ea 100644
--- a/app/models/contributor.js
+++ b/app/models/contributor.js
@@ -11,6 +11,20 @@ export default Ember.Object.extend({
 
   avatarURL: function() {
     return `https\:\/\/avatars2.githubusercontent.com/u/${this.get('github_uid')}?v=3&s=128`;
-  }.property('github_uid')
+  }.property('github_uid'),
+
+  serialize() {
+    return JSON.stringify({
+      profiles: {
+        'github.com': {
+          uid: this.get('github_uid'),
+          username: this.get('github_username'),
+        }
+        // 'wiki.kosmos.org': {
+        //   username: this.get('wiki_username')
+        // }
+      }
+    });
+  }
 
 });
diff --git a/app/services/ipfs.js b/app/services/ipfs.js
index e3f9f41..453a005 100644
--- a/app/services/ipfs.js
+++ b/app/services/ipfs.js
@@ -18,6 +18,7 @@ export default Ember.Service.extend({
   storeFile(content) {
     let ipfs = this.get('ipfs');
     return ipfs.add(new ipfs.Buffer(content)).then(res => {
+      Ember.Logger.debug('[ipfs] stored content in IPFS', content, res[0].hash);
       return res[0].hash;
     });
   },
diff --git a/app/services/kredits.js b/app/services/kredits.js
index 2f3d7d1..6479360 100644
--- a/app/services/kredits.js
+++ b/app/services/kredits.js
@@ -140,19 +140,23 @@ export default Ember.Service.extend({
 
   addContributor(address, name, ipfsHash, isCore, id) {
     Ember.Logger.debug('[kredits] add contributor', name, address);
+
+    let contributor = Contributor.create({
+      address: address,
+      github_username: name,
+      github_uid: id,
+      kredits: 0,
+      isCurrentUser: this.get('currentUserAccounts').includes(address)
+    });
+
     return new Ember.RSVP.Promise((resolve, reject) => {
-      this.get('kreditsContract').addContributor(address, name, ipfsHash, isCore, id, (err, data) => {
-        if (err) { reject(err); }
-        Ember.Logger.debug('[kredits] add contributor response', data);
-        let contributor = Contributor.create({
-          address: address,
-          github_username: name,
-          github_uid: id,
-          ipfsHash: ipfsHash,
-          kredits: 0,
-          isCurrentUser: this.get('currentUserAccounts').includes(address)
+      this.get('ipfs').storeFile(contributor.serialize()).then(ipfsHash => {
+        contributor.set('ipfsHash', ipfsHash);
+        this.get('kreditsContract').addContributor(address, name, ipfsHash, isCore, id, (err, data) => {
+          if (err) { reject(err); }
+          Ember.Logger.debug('[kredits] add contributor response', data);
+          resolve(contributor);
         });
-        resolve(contributor);
       });
     });
   },