Blockchain is known to most people only in the context of the cryptocurrency Bitcoin, not the digital self. However, it is still unknown to most that secure identity management can also be made possible with the help of blockchain. ZDNet reports on our secure and GDPR compliant blockchain solution ownid. This solution is characterized by its modular character, which makes it possible to integrate the solution into existing platforms and thus offers the customer an easy possibility of online identification. Data sovereignty remains in the hands of the end user, enabling data protection.