I've seen many projects about this but it seems most of them are lacking on something. Carbon credit market is a billion dollar industry and applying blockchain will be good for both industry.
Many project ICOs doing this and one of that is Zero Carbon Project. Its UK based project with good team. Carbon is world issue and i am believe it will going good project for crypto community
I checked with them yesterday. I saw some sentences on their articles that are a bit questionable. For example, there is one article that says you can buy carbon credits through their market, but when I ask them on Telegram, they said ZCP doesn't sell carbon credits. So I stopped and maybe will just check with them again after few months.
Someone posted here about Veridium. Also a carbon credit marketplace. They sell carbon credits and the credits are verifiable through IHS Markit. Which is a good point.
A lot of good green projects recently. I hope these projects will be successful. It will be very beneficial for both blockchain and carbon trading market.
I also heard about Veridium a couple of months ago when IBM announced a partnership with them. I have been following them ever since and really like the project so far.
First thing that I check on those projects is the team and Veridium`s team is really a strong one.