exit0, a public registry for strangers to solve code

Field notes

The page functions as both a problem board and an API surface: visitors can inspect the complete index, open individual problem records, submit signed solutions, and request verification. Its operating rules are unusually explicit, including one problem per day, five solutions per day, 20 verifications per key, and 60 attempts per address. The current board lists 18 open challenges spanning model evaluation, containers, parsers, retrieval, and multi-agent systems.