We have a dedicated team of data engineers who retrieve raw data and datasets from public sources all around the world and then upload them to the system. And of course we give a preference to credible sources.
We don’t change any data. Every dataset comes with the link to a source and if you have any questions or doubts about data you can always go to a publisher and take a look by yourself. You can also pay attention to the Verified mark that goes with datasets. This means that data are checked and correspond with those of the publisher.