Last night I borrowed a shared power bank. When scanning the code, it said "free," but after returning it, they charged me 39 directly.

I went to customer service, and they said: "The rules are written on the page."
I checked, and they were indeed there, but hidden in a bunch of fine print.
This is very typical——
Rules exist, but lack transparency; execution happens, but is beyond dispute.
Many on-chain projects are like this, appearing fair, but details are all black boxes.
But @Sign's approach is to write the rules directly into the system,
Who can participate, how it executes, all rely on credential verification, not on "interpretation rights."
$SIGN isn't doing something more complex, but more certain.
#Sign Geopolitical Infrastructure