diff --git a/app/components/proposal-list/component.js b/app/components/proposal-list/component.js
index cef1dfa..aaafa49 100644
--- a/app/components/proposal-list/component.js
+++ b/app/components/proposal-list/component.js
@@ -3,6 +3,14 @@ import Ember from 'ember';
 export default Ember.Component.extend({
 
   tagName: 'ul',
-  classNames: ['proposal-list']
+  classNames: ['proposal-list'],
+
+  actions: {
+
+    confirm(proposalId) {
+      this.sendAction('confirmAction', proposalId);
+    }
+
+  }
 
 });
diff --git a/app/components/proposal-list/template.hbs b/app/components/proposal-list/template.hbs
index 39c3727..0418dfb 100644
--- a/app/components/proposal-list/template.hbs
+++ b/app/components/proposal-list/template.hbs
@@ -6,6 +6,6 @@
     to <span class="recipient" title="{{proposal.recipientAddress}}">{{proposal.recipientName}}</span>
     <span class="votes">({{proposal.votesCount}}/{{proposal.votesNeeded}} votes)</span>
 
-    <button {{action "confirm"}}>+1</button>
+    {{#unless proposal.executed}}<button {{action "confirm" proposal.id}}>+1</button>{{/unless}}
   </li>
 {{/each}}
diff --git a/app/controllers/index.js b/app/controllers/index.js
index 6661e2a..c8fab5c 100644
--- a/app/controllers/index.js
+++ b/app/controllers/index.js
@@ -36,7 +36,16 @@ export default Ember.Controller.extend({
   findContributorByAddress(address) {
     return this.get('model.contributors')
                .findBy('address', address);
+  },
+
+  actions: {
+
+    confirmProposal(proposalId) {
+      this.get('kredits').vote(proposalId).then(transactionId => {
+        window.confirm('Vote submitted to Ethereum blockhain: '+transactionId);
+      });
+    }
+
   }
 
-
 });
diff --git a/app/services/kredits.js b/app/services/kredits.js
index 7c8b80f..2042bd1 100644
--- a/app/services/kredits.js
+++ b/app/services/kredits.js
@@ -116,6 +116,17 @@ export default Ember.Service.extend({
     });
   },
 
+  vote(proposalId) {
+    Ember.Logger.debug('[kredits] vote for', proposalId);
+    return new Ember.RSVP.Promise((resolve, reject) => {
+      this.get('kreditsContract').vote(proposalId, (err, data) => {
+        if (err) { reject(err); }
+        Ember.Logger.debug('[kredits] vote response', data);
+        resolve(data);
+      });
+    });
+  },
+
   logKreditsContract: function() {
     Ember.Logger.debug('[kredits] kreditsContract', this.get('kreditsContract'));
   }.on('init')
diff --git a/app/templates/index.hbs b/app/templates/index.hbs
index 150f90b..16df444 100644
--- a/app/templates/index.hbs
+++ b/app/templates/index.hbs
@@ -20,7 +20,7 @@
         <h2>Open Proposals</h2>
       </header>
       <div class="content">
-        {{proposal-list proposals=proposalsOpen}}
+        {{proposal-list proposals=proposalsOpen confirmAction="confirmProposal"}}
       </div>
     </section>
   {{/if}}
@@ -30,7 +30,7 @@
       <h2>Closed Proposals</h2>
     </header>
     <div class="content">
-      {{proposal-list proposals=proposalsClosed}}
+      {{proposal-list proposals=proposalsClosed confirmAction="confirmProposal"}}
     </div>
   </section>