HackerNoon Projects of the Week: Safe Trade Services, PvNP and Real-Time Data Quality Monitor

Welcome to the latest HackerNoon Projects of the Week installment. Each week, we shine a light on standout projects from our Proof of Usefulness Hackathon—a contest built around the core question every builder should answer: Is my product actually useful in the real world?

For each edition, we’ll highlight projects that demonstrate clear usefulness, technical execution, and real-world impact; all backed by data and not witty buzzwords.

This week, we’re excited to share three projects that have proven their utility by solving concrete problems for real users: Safe Trade Services, PvNP, and Real-Time Data Quality Monitor.

Meet the Projects of the Week

Safe Trade Services

https://hackernoon.com/safe-trade-services-earns-a-43-proof-of-usefulness-score-by-building-identity-verification-for-p2p-transactions?embedable=true

Safe Trade Services is a solution to one of the core challenges in peer-to-peer transactions: trust. The project focuses on building an identity verification layer that helps users validate counterparties before completing transactions, reducing the risk of fraud and disputes in decentralized or informal marketplaces. By introducing structured verification into P2P exchanges, it aims to make transactions safer and more reliable, earning a Proof of Usefulness score of 43 for addressing a clear, real-world need around secure digital trade.

Proof of Usefulness Score: +43/1000

PvNP

https://hackernoon.com/pvnp-earns-a-21-proof-of-usefulness-score-by-building-an-interactive-tsp-solver-and-visualizer?embedable=true

PvNP is an early-stage educational tool designed to make complex optimization problems more intuitive through interaction. By building an interactive solver and visualizer for the Traveling Salesperson Problem, it helps users understand algorithmic behavior through real-time animations and step-by-step exploration, earning a Proof of Usefulness score of 21 for its focus on making abstract concepts more accessible to learners.

Proof of Usefulness Score: +21/1000

Real-Time Data Quality Monitor

https://hackernoon.com/real-time-data-quality-monitor-earns-a-54-proof-of-usefulness-score-by-building-an-open-source-data-observability-dashboard?embedable=true

Real-Time Data Quality Monitor is an open-source data observability tool designed to detect issues in data pipelines as they happen. Built using technologies like Kafka, dbt, and machine learning, it focuses on identifying anomalies, data drift, and pipeline failures in real time, helping teams maintain data reliability before issues cascade downstream. By combining monitoring with actionable insights, the project aims to improve trust in data systems and earned a Proof of Usefulness score of 54 for addressing a critical need in modern data engineering workflows.

Proof of Usefulness Score: +54/1000

Stop Building in the Dark - Get Scored!

The web is drowning in vaporware and empty promises. We created __Proof of Usefulness__to reward what actually matters: real user adoption, sustainable revenue, and technical stability.

Why submit?

1. Instant Validation:Get your Proof of Usefulness score (from -100 to +1000) the moment you submit.
2. The Prize Pool: Compete for $20K in cash and $130K+ in software credits from Bright Data, Neo4j, Storyblok, Algolia, and HackerNoon.
3. Built-in Distribution:Your submission becomes a HackerNoon story, putting your build in front of millions of monthly readers.
4. Rewards for All: Every qualifying participant unlocks a suite of software credits just for entering.

How to Enter:

1. Get Your Score: Head to www.proofofusefulness.comand submit your project details to generate your PoU Report Card.
2. Generate Your Draft:Click the button on your report page to convert your submission into a HackerNoon blog post draft.
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!

Thanks for building useful things!
P.S. Submissions roll monthly through June 2026. Get in early!