Hi
please take this as constructive criticism and I am willing to help. I fell you motives and ideals are sound just the delivery mechanism is flawed
I think that having a way to offset carbon credits for mining coins is a great idea.
Although your tree project is ok I am concerned:
a. Is not acceptable as it is a secret location. It need to be audited and full disclosure.
b. Who gets the carbon income or offsets from planting the tree? The owner of the land?

You need to get professional ie Have a carbon offset scheme available to all coins, brokers, pools (option for the minor)

The income from this should go to either or
1. A credible public audited scheme, there are many
2. Use a scheme where you get a bigger bang for the buck. IE if I did it in Asia where i live I could get 10 tree planted for every one you do for the same cost
3. Use the money to support organisations that prevent rain forest destruction, IE buy them out.
4. The best scheme of all is to sponsor small solar lights for third world nations. They will stop burning fossil fuel for lighting.
It will also save lives and help people stop being slaves to big oil.
Here are some statistics.
a. !.6 billion people do not have electrical lighting
b. 70 billion liters of Kerosene get burned every year for lighting
c. 1.5 million deaths are attributable to this lighting and many are children under 5 years old
d. up to 30% of these people income is spent on lighting.
So you stop the burning of fossil fuels, save lives and and help these families to a better life. I can refer you to many of these organisations that are UN approved.

Kind Regards
Mark Dansie
Revolution Green