If a person uploads their KYC, they will enter a waiting period. After 1000 blocks, they can call the contract to activate their KYC. Additionally, implement a KYC invalidation mechanism through voting. If during this period they receive 1/3 of the votes against them, their KYC will be considered failed, and they will not be able to activate it.
For further actions, you may consider blocking this person and/or reporting abuse
KYC Mechanism Modification Proposal 3
Add a waiting period to the uploadKYC function
If a person uploads their KYC, they will enter a waiting period. After 1000 blocks, they can call the contract to activate their KYC. Additionally, implement a KYC invalidation mechanism through voting. If during this period they receive 1/3 of the votes against them, their KYC will be considered failed, and they will not be able to activate it.