The HackerNoon Newsletter: The Proof of Usefulness Algorithm: Is It Good? Do People Use It? (4/18/2026)

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18 Apr 2026

How are you, hacker?


🪐 What’s happening in tech today, April 18, 2026?


The HackerNoon Newsletter brings the HackerNoon homepage straight to your inbox. On this day, Osborne Computer introduced in 1983, and we present you with these top quality stories. From What Ghost Murmur Technology Actually Is (Its Not a Heartbeat Detector) to The Proof of Usefulness Algorithm: Is It Good? Do People Use It?, let’s dive right in.

What Ghost Murmur Technology Actually Is (Its Not a Heartbeat Detector)


By @misclassify [ 9 Min read ] The CIA says Ghost Murmur detected a heartbeat from 40 miles away. Physicists say the math is off by 2 quintillion. Heres what the tech actually does — and why Read More.

The Proof of Usefulness Algorithm: Is It Good? Do People Use It?


By @proofofusefulness [ 3 Min read ] A technical approach to answering two simple questions: Is it good? Do people use it? Read More.


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We hope you enjoy this worth of free reading material. Feel free to forward this email to a nerdy friend who'll love you for it.See you on Planet Internet! With love, The HackerNoon Team ✌️