diff --git a/app/models/contributor.js b/app/models/contributor.js
index 76baf08..8e9f39e 100644
--- a/app/models/contributor.js
+++ b/app/models/contributor.js
@@ -1,14 +1,12 @@
 import EmberObject from '@ember/object';
-import bignumber from 'kredits-web/utils/cps/bignumber';
-import kreditsValue from 'kredits-web/utils/cps/kredits';
 
 export default EmberObject.extend({
   // Contract
-  id: bignumber('idRaw', 'toString'),
+  id: null,
   account: null,
-  balance: kreditsValue('balanceRaw'),
-  totalKreditsEarned: bignumber('totalKreditsEarnedRaw', 'toNumber'),
-  contributionsCount: bignumber('contributionsCountRaw', 'toNumber'),
+  balance: 0,
+  totalKreditsEarned: 0,
+  contributionsCount: 0,
   isCore: false,
   ipfsHash: null,
 
@@ -20,6 +18,5 @@ export default EmberObject.extend({
   github_uid: null,
   wiki_username: null,
   zoom_display_name: null,
-  ipfsData: ''
 
 });
diff --git a/app/services/kredits.js b/app/services/kredits.js
index 5ed3942..06d8d3f 100644
--- a/app/services/kredits.js
+++ b/app/services/kredits.js
@@ -9,6 +9,7 @@ import { alias, notEmpty } from '@ember/object/computed';
 import { isEmpty, isPresent } from '@ember/utils';
 
 import groupBy from 'kredits-web/utils/group-by';
+import processContributorData from 'kredits-web/utils/process-contributor-data';
 import formatKredits from 'kredits-web/utils/format-kredits';
 
 import config from 'kredits-web/config/environment';
@@ -208,8 +209,8 @@ export default Service.extend({
   getContributors () {
     return this.kredits.Contributor.all()
       .then(contributors => {
-        return contributors.map(contributor => {
-          return Contributor.create(contributor);
+        return contributors.map(data => {
+          return Contributor.create(processContributorData(data));
         });
       });
   },
diff --git a/app/utils/process-contributor-data.js b/app/utils/process-contributor-data.js
new file mode 100644
index 0000000..7066f93
--- /dev/null
+++ b/app/utils/process-contributor-data.js
@@ -0,0 +1,19 @@
+export default function processContributorData(data) {
+  const processed = {
+    id: data.id.toString(),
+    balance: data.balanceInt,
+    totalKreditsEarned: data.totalKreditsEarned,
+    contributionsCount: data.contributionsCount.toNumber()
+  }
+
+  const otherProperties = [
+    'account', 'accounts', 'ipfsHash', 'isCore', 'kind', 'name', 'url',
+    'github_username', 'github_uid', 'wiki_username', 'zoom_display_name'
+  ];
+
+  otherProperties.forEach(prop => {
+    processed[prop] = data[prop];
+  });
+
+  return processed;
+}
diff --git a/tests/fixtures/contributor-data.js b/tests/fixtures/contributor-data.js
new file mode 100644
index 0000000..5d7477c
--- /dev/null
+++ b/tests/fixtures/contributor-data.js
@@ -0,0 +1,64 @@
+export default {
+  "0": 1,
+  "1": "0x7E8f313C56F809188313aa274Fa67EE58c31515d",
+  "2": "0x99b8afd7b266e19990924a8be9099e81054b70c36b20937228a77a5cf75723b8",
+  "3": 18,
+  "4": 32,
+  "5": true,
+  "6": {
+    "_hex": "0x09979c0838e8fc880000"
+  },
+  "7": 53500,
+  "8": {
+    "_hex": "0x49"
+  },
+  "9": true,
+  "id": 1,
+  "account": "0x7E8f313C56F809188313aa274Fa67EE58c31515d",
+  "hashDigest": "0x99b8afd7b266e19990924a8be9099e81054b70c36b20937228a77a5cf75723b8",
+  "hashFunction": 18,
+  "hashSize": 32,
+  "isCore": true,
+  "balance": {
+    "_hex": "0x09979c0838e8fc880000"
+  },
+  "totalKreditsEarned": 53500,
+  "contributionsCount": {
+    "_hex": "0x49",
+    "toNumber": function() { return 73; }
+  },
+  "exists": true,
+  "balanceInt": 45298,
+  "ipfsHash": "QmYgiRd1FZ7JjDGBwkmLQNF6XQuyF8AWoFDRvUWhhmxiEj",
+  "name": "Bumi",
+  "kind": "person",
+  "url": "https://michaelbumann.com",
+  "accounts": [
+    {
+      "site": "github.com",
+      "uid": 318,
+      "username": "bumi",
+      "url": "https://github.com/bumi"
+    },
+    {
+      "site": "gitea.kosmos.org",
+      "username": "bumi",
+      "url": "https://gitea.kosmos.org/bumi"
+    },
+    {
+      "site": "wiki.kosmos.org",
+      "username": "Bumi",
+      "url": "https://wiki.kosmos.org/User:Bumi"
+    },
+    {
+      "site": "zoom.us",
+      "username": "bumi"
+    }
+  ],
+  "github_uid": 318,
+  "github_username": "bumi",
+  "gitea_username": "bumi",
+  "wiki_username": "Bumi",
+  "zoom_display_name": "bumi",
+  "ipfsData": "{\n  \"@context\": \"https://schema.kosmos.org\",\n  \"@type\": \"Contributor\",\n  \"kind\": \"person\",\n  \"name\": \"Bumi\",\n  \"accounts\": [\n    {\n      \"site\": \"github.com\",\n      \"uid\": 318,\n      \"username\": \"bumi\",\n      \"url\": \"https://github.com/bumi\"\n    },\n    {\n      \"site\": \"gitea.kosmos.org\",\n      \"username\": \"bumi\",\n      \"url\": \"https://gitea.kosmos.org/bumi\"\n    },\n    {\n      \"site\": \"wiki.kosmos.org\",\n      \"username\": \"Bumi\",\n      \"url\": \"https://wiki.kosmos.org/User:Bumi\"\n    },\n    {\n      \"site\": \"zoom.us\",\n      \"username\": \"bumi\"\n    }\n  ],\n  \"url\": \"https://michaelbumann.com\"\n}"
+}
diff --git a/tests/fixtures/contributors.js b/tests/fixtures/contributors.js
index 97c0fac..8c8f0ea 100644
--- a/tests/fixtures/contributors.js
+++ b/tests/fixtures/contributors.js
@@ -3,9 +3,9 @@ import Contributor from 'kredits-web/models/contributor';
 const contributors = [];
 
 const data = [
-  { id: 1, name: 'Bumi', totalKreditsEarned: 11500, github_uid: 318 },
-  { id: 2, name: 'Râu Cao', totalKreditsEarned: 3000, github_uid: 842 },
-  { id: 3, name: 'Manuel', totalKreditsEarned: 0, github_uid: 54812 }
+  { id: '1', name: 'Bumi', totalKreditsEarned: 11500, github_uid: 318 },
+  { id: '2', name: 'Râu Cao', totalKreditsEarned: 3000, github_uid: 842 },
+  { id: '3', name: 'Manuel', totalKreditsEarned: 0, github_uid: 54812 }
 ];
 
 data.forEach(attrs => contributors.push(Contributor.create(attrs)));
diff --git a/tests/unit/utils/process-contributor-data-test.js b/tests/unit/utils/process-contributor-data-test.js
new file mode 100644
index 0000000..1d223fb
--- /dev/null
+++ b/tests/unit/utils/process-contributor-data-test.js
@@ -0,0 +1,31 @@
+import { module, test } from 'qunit';
+import processContributorData from 'kredits-web/utils/process-contributor-data';
+import testData from '../../fixtures/contributor-data';
+
+module('Unit | Utility | process-contributor-data', function() {
+
+  let result = processContributorData(testData);
+
+  test('formats the data correctly', function(assert) {
+    // TODO use integers everywhere for IDs
+    assert.ok(typeof result.id == 'string');
+    assert.ok(typeof result.balance == 'number');
+    assert.ok(typeof result.totalKreditsEarned == 'number');
+    assert.ok(typeof result.contributionsCount == 'number');
+  });
+
+  test('copies other properties', function(assert) {
+    [
+      'account', 'accounts', 'ipfsHash', 'isCore', 'kind', 'name', 'url',
+      'github_username', 'github_uid', 'wiki_username', 'zoom_display_name'
+    ].forEach(p => {
+      assert.ok(Object.prototype.hasOwnProperty.call(result, p), `copies property ${p}`);
+    })
+  });
+
+  test('does not copy unnecessary properties', function(assert) {
+    ['exists', '5'].forEach(p => {
+      assert.notOk(Object.prototype.hasOwnProperty.call(result, p));
+    })
+  });
+});