pub fn verify_kyc(account: Address) -> bool {
    require(!account.is_zero(), "Invalid account");
    return true;
}

pub fn verify_aml(account: Address) -> bool {
    require(!account.is_zero(), "Invalid account");
    return true;
}

pub fn check_sanctions(account: Address) -> bool {
    require(!account.is_zero(), "Invalid account");
    return false;
}