Greenpill Nigeria has one of the strongest public chapter footprints in the research artifact.
The Water Cup thread on the Regen Coordination Hub gives the program context. A public Hypercert records the Water Cup Mapping proof surface. A separate Awka Ethereum-at-10 event page shows the chapter presenting Water Cup alongside ReFi and public-goods education.
This story should render as a proof-backed field note, not as a claim that every downstream impact metric is already verified by the website.