http://uwb25d43nnzerbozmtviwn7unn7ku226tpsjyhy5n4st5cf3d4mtflqd.onion/posts/tamper/index.html
Verification that the random pattern hasn't changed can be done manually with what astronomers call a "blink comparison". This is used in astronomy to detect small changes in the night sky: you quickly flick between the original photo and the current one, which makes it easier to see any changes. Alternatively, if you have an Android smartphone (either GrapheneOS or a cheap one for intrusion detection ), you can use an app called Blink Comparison , which...