The website https://pixelogic.app/every-5x5-nonogram contains every 5x5 Nonogram puzzle. When you solve one, it is solved for everybody. There are 24,976,511 in total, with less than 2 million solved right now. The project was started on the 30th of May. At the moment the solve rate is about 500-1000/minute, which converts to about two to four weeks to complete all Nonograms.

I will be using the UTC timezone for resolution. As the outcome is objective, I may bet on this market.

• Update 2025-07-07 (PST) (AI summary of creator comment): In response to a discussion about using bots, the creator has specified that doing so is permissible under the following condition:

  • The bot must be rate-limited to 1 solved nonogram per 5 seconds.