BecomeMe

I beleive the way should work is that credits cant just be made up. In order for the polluter to buy a credit, a cleaner needs to do something to generate the credit (carbon capture/plant tree/etc). So cleaner companies are incentivised to expand their operations, and polluters are incentivised to limit their carbon pollution, so they dont have to spend money on carbon credits.

Of course, there are a heap on administrative and political issues, notably:

• cleaners can lie about how much they cleanup
• polluters can price their products a bit higher and juat not worry about it