We are just before the implementation of crypto and CC gateways for our STO.
We have the KYC in place after the STO sale, by locking invested tokens before the KYC is passed.

We know we can protect ourselves from CC chargebacks by defining the token and delivery well in "terms of purchase". (we can prove we delivered what a buyer was purchasing).

How about if the buyer uses a stolen credit card, and a true owner of the credit card makes a chargeback? Is there any way to protect yourself from such chargebacks?

We think no one will accept a locking period of 6 months on invested tokens (the period in which an individual can make a chargeback).