blockchain

The technology that powers cryptocurrency can also be used to verify where trees were planted, their vital signs and their carbon offset — and that could make companies less likely to stretch the truth about their climate efforts.

Proponents of blockchain, the technology that powers cryptocurrency and NFTs, say it could also be useful in verifying that a climate promise actually came to fruition. Say a company promises to plant 10,000 trees: they want to make sure the trees are actually planted, that no one else is taking credit for them, and that the tree has a healthy...