[Karrot_Kream]

Tax the source. Apply the tax to every coal mine, oil well, managed forest, or any other material that has embodied carbon. These companies will do what they always do, raise prices and pass them on. This trickle down effect should ideally work their way through the economy and incentivize using fewer carbon-emitting sources.

Of course there is the question about people that simply _store_ carbon, e.g. what if there's a coal mine where the buyers of the coal don't actually use the coal for its energy purposes but instead for, say, makeup creation, or wood for building? We would probably have to work out special licensing for non-usage purposes and that's where it would probably get tricky.