Angular 2 http get array of objects

I'm currently practicing with Angular2 and Ionic2. I want to retrieve data from an API (For example: https://www.cryptocompare.com/api/data/coinlist/). To retrieve the data I've made a provider with a load method:

load() {
if (this.currencies) {
  // already loaded data
  console.log('already has data');
  return Promise.resolve(this.currencies);
}

var url = this.baseUrl + '/coinlist';

// don't have the data yet
return new Promise(resolve => {
  this.http.get(url)
    .map(res => res.json().Data)
    .subscribe(data => {
      this.currencies = data;
      resolve(this.currencies);
      console.log(this.currencies);
    });
}); 
}

And to show the data i've made the following template structure:

<ion-row *ngFor="let currency of currencies | orderBy : ['-Name'] | keys" (click)="itemTapped($event, currency)">
    <ion-col width-10>
    1
    </ion-col>
    <ion-col width-60>
    {{currency.Name}}
    </ion-col>
    <ion-col width-30>
    {{currency.FullName}}
    </ion-col>
  </ion-row>
  <ion-row>

Here I use a Pipe, as the response are Objects. However, I cant seem to make it work. Console.log shows me that the response are still objects with objects and I'm guessing that the problem lays there. (console.log is also shown twice in the console?)

Console: Console.log of this.currencies

For reference the Pipe class:

@Pipe({name: 'keys'})
export class KeysPipe implements PipeTransform {
  transform(value, args:string[]) : any {
    if (!value) {
      return value;
    } 
    let keys = [];
    for (let key in value) {
      keys.push({key: key, value: value[key]});
    }
    return keys;
  } 
}

The view shows an empty list and there are no errors outputted in the console. Does anyone know how to solve this? Many thanks