Crunchfish AB submitted a Swedish patent for a method to establish and use an anonymous and robust Trusted Applications. The innovation applies to digital applications in general and specifically to payments and Central Bank Digital Currency (CBDC) implementations where privacy is a key feature. If the patent is granted the patent protection is valid for 20 years from the date of filing.

As cash is increasingly displaced, there is an ever-growing need for digital payment alternatives that preserve the properties of cash. Offline payments in CBDC implementations are now viewed as a key functionality, not just from a system resilience perspective but also for the ability to allow payers to continue to be private. The innovation makes Digital Cash more similar to cash by allowing the user to set up a completely anonymous wallet that is recognized as legitimate to use the payment service.

Crunchfish has applied for a Swedish patent with application number 2350365-9 for setting up and using an anonymous trusted application, executable in a secure execution environment on a host device. It is applicable in any type of digital service to request a service remotely or communicate locally, including CBDC implementations to ensure privacy. In case of payment applications this allows setting up a Digital Cash Trusted Application for offline as well as online transactions without any Know Your Customer (KYC) requirements.