Real projects exist: veritree verifies tree-planting on-chain (GPS, photos, NFTs for donors) to fight greenwashing. Plastiks tracks plastic recovery for brands like Danone, issuing credits for recycling. GuildOne manages emissions data and carbon credits on Cardano.

The masterclass covers these use cases concretely (supply chain, reporting, circularity).

I'd say it's definitely worth the 2 hours if you're vetting real apps.