Cloudflare, a tech company, launched Project Jengo to challenge the validity of patents held by Blackbird Tech, a notorious patent troll. The project offered a $50,000 bounty for prior art that proves Blackbird's patents are invalid or overbroad. Since its inception, Project Jengo has received more than 230 submissions and awarded the first round of the bounty to 15 recipients totaling $7,500. The project is now focusing on challenging other Blackbird patents and encouraging participants to continue their search for prior art.