You use different CPUs and compare the result. Also, you can try this: https://www.crowdsupply.com/sutajio-kosagi/precursor https://www.crowdsupply.com/sutajio-

You use different CPUs and compare the result. Also, you can try this: https://www.crowdsupply.com/sutajio-kosagi/precursor https://www.crowdsupply.com/sutajio-kosagi/precursor This is called "security through compartmentalization", i.e., you don't trust one single entity. The only approach that works.