This content originally appeared on HackerNoon and was authored by Proof of Usefulness
Welcome back to another edition of HackerNoon’s Projects of the Week.
Every week, we spotlight standout submissions from the Proof of Usefulness Hackathon — a global developer contest motivated by a simple question more builders need to answer: is my product/service actually useful in the real world?
So instead of vague promises and over-polished buzzwords, we look for projects that solve real problems, serve real users, and show clear signs of traction, functionality, or thoughtful execution.
This week, we’re highlighting three exciting projects solving real problems in the real world: Regata, Doxreporter, and Cresva.
:::tip Want to see your project spotlighted here?
Join the Proof of Usefulness Hackathon to get on our radar.
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Meet the Projects of the Week
Regata
Regata is tackling a problem most sales teams struggle with in the dark: too many leads, not enough context. Instead of forcing users through rigid CRM workflows, Regata adapts its interface dynamically based on user behavior and sales intent, helping teams prioritize and activate leads more efficiently. The project earned attention for combining practical UX thinking with measurable business utility, rather than treating AI as a cosmetic feature.
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:::tip See Regata’s full Proof of Usefulness report.
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Doxreporter
Doxreporter brings blockchain-backed storage into the world of cyber incident reporting, where data integrity and traceability matter. The platform is designed to help organizations securely document incidents in a tamper-resistant way, creating verifiable records that can hold up across audits, investigations, and compliance workflows. In a space full of vague “Web3 security” pitches, Doxreporter stood out by focusing on a very specific operational problem with clear real-world stakes.
:::tip See Doxreporter’s full Proof of Usefulness report.
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Cresva
Cresva is building what it describes as an AI marketing workforce for ecommerce brands, automating repetitive campaign and content operations that usually consume small teams. What made the project stand out wasn’t just the AI angle, but the focus on execution: helping ecommerce businesses handle real marketing workloads faster without dramatically increasing headcount. Cresva earned a strong Proof of Usefulness score by showing a clear use case tied directly to operational efficiency.
:::tip See Cresva’s full Proof of Usefulness Report.
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This is Your Sign to Stop Building in the Dark
The internet has no shortage of polished demos, inflated metrics, and products that sound impressive until someone tries to use them. Proof of Usefulness was created to reward something simpler and much harder to fake: products that genuinely work for real people.
Why submit?
1. Instant Validation: Get your Proof of Usefulness score (from -100 to +1000) the moment you submit. \n 2. The Prize Pool: Compete for $20K in cash and $130K+ in software credits from Bright Data, Neo4j, Storyblok, Algolia, and HackerNoon. \n 3. Built-in Distribution: Your submission becomes a HackerNoon story, putting your build in front of millions of monthly readers. \n 4. Rewards for All: Every qualifying participant unlocks a suite of software credits just for entering.
How to Enter the Proof of Usefulness Hackathon
1. Get Your Score: Head to www.proofofusefulness.com and submit your project details to generate your PoU Report Card. \n 2. Generate Your Draft: Click the button on your report page to convert your submission into a HackerNoon blog post draft. \n 3. Refine & Publish: Edit your draft to add your technical "secret sauce," then hit Submit for Review. Once published, you’re officially in the prize queue!
:::tip 👉 Submit Your Project Now!
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Thanks for building useful things!
This content originally appeared on HackerNoon and was authored by Proof of Usefulness
Proof of Usefulness | Sciencx (2026-05-22T16:37:32+00:00) HackerNoon Projects of the Week: Regata, Doxreporter, and Cresva. Retrieved from https://www.scien.cx/2026/05/22/hackernoon-projects-of-the-week-regata-doxreporter-and-cresva/
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