Seems to me this would be susceptible to the cobra effect: > where people and/or the government can donate money to buy carbon from people... No matter what y

Seems to me this would be susceptible to the cobra effect: > where people and/or the government can donate money to buy carbon from people... No matter what you do with the carbon afterwards, this scheme means you first have to buy it and the other party can sell it. I think being able to sell carbon would create exactly the opposite incentive from what is needed - suddenly it becomes profitable to produce carbon and a profit risk to reduce emissions.