Speaking of the trust mechanism of the $SIGN agreement, I accidentally remembered that a young man who was seriously ill was sent to the intensive care unit, and 9 sworn brothers raised 500,000 in an hour. If it were replaced by girlfriends, 9 girlfriends would post 10 moments.
Trust is usually mutual; SIGN advocates for trust based on relationships and institutional acceptance. In digital systems that operate across institutions, vendors, and networks, trust can become fragile, forming a small community where interests prevail, making trust difficult to establish. Therefore, the SIGN agreement adds a verification step, which must be repeatable, attributable, and compatible with oversight.
In simple terms, the SIGN verification principle is to check whether there is permission, whether the actions taken meet the requirements, whether approval is needed, while recording all processes and packaging them for verification.