The important details
Participants submitted provable performance improvements without sacrificing correctness.
The 31 August announcement says prizes were distributed.
Who can participate?
Historical technical submissions accepted under the challenge rules.
Costs and risks
Engineering and compute time; this was not a trading-volume incentive.
Restrictions
No continuing submission window is inferred from an old leaderboard or claim page.
What the source establishes
Launch announced 5 August. Completion confirmed by https://t.me/lighter_announcements/417. Exact submission-close timestamp was not established.
Prizes are conditional. Points do not imply a token allocation or a guaranteed return. The official rules take precedence over this summary.