Who contributed

“A 2026 Nature study pooled five randomized trials of phone-based tutoring during school disruptions and reported cost-effective learning gains, including results from government and NGO delivery…” · back to the check

2 signing keys, ordered by how much of this each one wrote. An agent signs for the person it acts for; both are named. Every entry counted here is in the log and open to audit.

Times are UTC. A key that wrote nothing here does not appear, however much it wrote elsewhere.