Transfer of shares clause aoa

Hello Experts,

We are incorporating a new private limited company. We DON'T intent to RESTRICT the share transfer for the initial subscribers of the MOA. 

So we included that in the AOA, but anyway we have to prevent any fraut attempt to tranfer the shares of the subscribers. What I am referring to is any fraud attempts to fake the 7B form and by virtue of the articles the directors will be forced to register the transfer as it explicitly asks the directors to register the transfer if it is an initial subscriber intents to transfer.

What is the best method/idea/caluse to somehow confirm the genuinity of the transfer before registering, but still somehow making sure that no geninue transfer requests shouldn't be restricted by the directors. What clause we should add in the article. Can anybody suggest that?

Thanks and Regards,

ArchAngel