diff --git a/app/components/contributor-list/component.js b/app/components/contributor-list/component.js
index 4055ab0..851ef26 100644
--- a/app/components/contributor-list/component.js
+++ b/app/components/contributor-list/component.js
@@ -9,10 +9,10 @@ export default Component.extend({
   actions: {
 
     toggleContributorInfo(contributor) {
-      if (contributor.get('showMetadata')) {
+      if (contributor.showMetadata) {
         contributor.set('showMetadata', false);
       } else {
-        this.contributors.setEach('showMetadata', false);
+        this.contributorList.setEach('showMetadata', false);
         contributor.set('showMetadata', true);
       }
     }
diff --git a/app/components/contributor-list/template.hbs b/app/components/contributor-list/template.hbs
index 611b46c..765ebd9 100644
--- a/app/components/contributor-list/template.hbs
+++ b/app/components/contributor-list/template.hbs
@@ -1,6 +1,6 @@
 <tbody>
   {{#each contributorList as |c|}}
-    <tr role="button" class={{if (is-current-user c.contributor) "current-user"}} {{action "toggleContributorInfo" c.contributor}}>
+    <tr role="button" class={{if (is-current-user c.contributor) "current-user"}} {{action "toggleContributorInfo" c}}>
       <td class="person">
         {{user-avatar contributor=c.contributor}} {{c.contributor.name}}
       </td>
@@ -18,12 +18,16 @@
     <tr class="metadata {{if (is-current-user c.contributor) "current-user"}} {{if c.showMetadata "visible"}}">
       <td colspan="2">
         <ul>
-          <li><a href="https://testnet.etherscan.io/address/{{c.contributor.account}}">Inspect Ethereum transactions</a></li>
+          <li>
+            <a href="https://testnet.etherscan.io/address/{{c.contributor.account}}" target="_blank" rel="noopener">Inspect Ethereum transactions</a>
+          </li>
           {{#if c.contributor.ipfsHash}}
-            <li><a href="https://ipfs.io/ipfs/{{c.contributor.ipfsHash}}">Inspect IPFS profile</a></li>
+            <li>
+              <a href="https://ipfs.io/ipfs/{{c.contributor.ipfsHash}}" target="_blank" rel="noopener">Inspect IPFS profile</a>
+            </li>
           {{/if}}
         </ul>
-        {{#if c.contributor.showMetadata}}
+        {{#if c.showMetadata}}
           <pre>{{c.contributor.ipfsData}}</pre>
         {{/if}}
       </td>
diff --git a/app/services/kredits.js b/app/services/kredits.js
index 7062625..39e62af 100644
--- a/app/services/kredits.js
+++ b/app/services/kredits.js
@@ -3,6 +3,7 @@ import Kredits from 'npm:kredits-contracts';
 import RSVP from 'rsvp';
 
 import Service from '@ember/service';
+import EmberObject from '@ember/object';
 import { computed } from '@ember/object';
 import { alias, notEmpty } from '@ember/object/computed';
 import { isEmpty } from '@ember/utils';
@@ -50,12 +51,12 @@ export default Service.extend({
     return contributionsGrouped.map(c => {
       const amountUnconfirmed = c.items.mapBy('amount').reduce((a, b) => a + b);
       const contributor = this.contributors.findBy('id', c.value.toString());
-      return {
+      return EmberObject.create({
         contributor: contributor,
         amountUnconfirmed: amountUnconfirmed,
         amountConfirmed: contributor.totalKreditsEarned,
         amountTotal: contributor.totalKreditsEarned + amountUnconfirmed
-      }
+      })
     })
   }),