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<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Blog on</title><link>/blog/</link><description>Recent content in Blog on</description><generator>Hugo -- gohugo.io</generator><language>en-US</language><atom:link href="/blog/index.xml" rel="self" type="application/rss+xml"/><item><title>PoW performance</title><link>/blog/pow-performance/</link><pubDate>Wed, 26 May 2021 00:00:00 +0000</pubDate><guid>/blog/pow-performance/</guid><description>mCaptcha uses a proof-of-work(PoW) mechanism to rate limit users or potential bots. In order for this to be effective, the PoW should be configured properly. The difficulty requirement can&amp;rsquo;t be too high, as it could cause accessibility issues on the client-side while at the same time, it shouldn&amp;rsquo;t be too low, as it wouldn&amp;rsquo;t offer proper protection against bots.
<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Blog on</title><link>/blog/</link><description>Recent content in Blog on</description><generator>Hugo -- gohugo.io</generator><language>en-US</language><atom:link href="/blog/index.xml" rel="self" type="application/rss+xml"/><item><title>PoW performance</title><link>/blog/pow-performance/</link><pubDate>Wed, 01 Sep 2021 00:00:00 +0000</pubDate><guid>/blog/pow-performance/</guid><description>mCaptcha uses a proof-of-work(PoW) mechanism to rate limit users or potential bots. In order for this to be effective, the PoW should be configured properly. The difficulty requirement can&amp;rsquo;t be too high, as it could cause accessibility issues on the client-side while at the same time, it shouldn&amp;rsquo;t be too low, as it wouldn&amp;rsquo;t offer proper protection against bots.
Malicious bots(the ones that wreak havoc), run native code which is capable of running in a multi-threaded context.</description></item><item><title>Say hello to mCaptcha</title><link>/blog/say-hello-to-mcaptcha/</link><pubDate>Wed, 26 May 2021 00:00:00 +0000</pubDate><guid>/blog/say-hello-to-mcaptcha/</guid><description>At mCaptcha, we believe in digital freedom and privacy and so we built an proof-of-work based CAPTCHA system that doesn&amp;rsquo;t track. Seriously, no tracking. But that isn&amp;rsquo;t the killer feature, our system doesn&amp;rsquo;t require the user to pick cars or ID sidewalks &amp;mdash; our system does it&amp;rsquo;s thing(usually at the click of a button) and gets out of the way.
How does it work? mCaptcha uses SHA256 based proof-of-work(PoW) to rate limit users.</description></item></channel></rss>

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<!doctype html><html lang=en-us><head><meta charset=utf-8><meta http-equiv=x-ua-compatible content="ie=edge"><meta name=viewport content="width=device-width,initial-scale=1,shrink-to-fit=no"><link rel=preload as=font href=/fonts/vendor/jost/jost-v4-latin-regular.woff2 type=font/woff2 crossorigin><link rel=preload as=font href=/fonts/vendor/jost/jost-v4-latin-700.woff2 type=font/woff2 crossorigin><link rel=stylesheet href=/main.d731b24f97a905b851b9151339aca0f6a9b1c45ed16584cee7a4113d98d2a3db570c096603fbf15fbe9bbf092715cc742abaea351b4767239dbfedfffc08ebdb.css integrity="sha512-1zGyT5epBbhRuRUTOayg9qmxxF7RZYTO56QRPZjSo9tXDAlmA/vxX76bvwknFcx0KrrqNRtHZyOdv+3//Ajr2w==" crossorigin=anonymous><noscript><style>img.lazyload{display:none}</style></noscript><meta name=robots content="index, follow"><meta name=googlebot content="index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1"><meta name=bingbot content="index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1"><title>PoW performance - mCaptcha</title><meta name=description content="PoW performance of native and WASM implementations. Does the native implementation have and edge over the WASM library?"><link rel=canonical href=/blog/pow-performance/><meta name=twitter:card content="summary_large_image"><meta name=twitter:image content="/blog/pow-performance/icon.png"><meta name=twitter:title content="PoW performance"><meta name=twitter:description content="PoW performance of native and WASM implementations. Does the native implementation have and edge over the WASM library?"><meta name=twitter:site content="@"><meta name=twitter:creator content="@"><meta property="og:title" content="PoW performance"><meta property="og:description" content="PoW performance of native and WASM implementations. Does the native implementation have and edge over the WASM library?"><meta property="og:type" content="article"><meta property="og:url" content="/blog/pow-performance/"><meta property="og:image" content="/blog/pow-performance/icon.png"><meta property="article:published_time" content="2021-05-26T00:00:00+00:00"><meta property="article:modified_time" content="2021-09-01T14:27:17+05:30"><meta property="og:site_name" content="mCaptcha"><meta property="article:publisher" content="https://www.facebook.com/"><meta property="article:author" content="https://www.facebook.com/"><meta property="og:locale" content="en_US"><script type=application/ld+json>{"@context":"http://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"\/"},{"@type":"ListItem","position":2,"name":"Blogpow Performance","item":"\/blogpow-performance\/"}]}</script><meta name=theme-color content="#fff"><link rel=apple-touch-icon sizes=180x180 href=/apple-touch-icon.png><link rel=icon type=image/png sizes=32x32 href=/favicon-32x32.png><link rel=icon type=image/png sizes=16x16 href=/favicon-16x16.png><link rel=manifest href=/site.webmanifest></head><body class="blog single"><div class="header-bar fixed-top"></div><header class="navbar fixed-top navbar-expand-md navbar-light"><div class=container><input class="menu-btn order-0" type=checkbox id=menu-btn>
<!doctype html><html lang=en-us><head><meta charset=utf-8><meta http-equiv=x-ua-compatible content="ie=edge"><meta name=viewport content="width=device-width,initial-scale=1,shrink-to-fit=no"><link rel=preload as=font href=/fonts/vendor/jost/jost-v4-latin-regular.woff2 type=font/woff2 crossorigin><link rel=preload as=font href=/fonts/vendor/jost/jost-v4-latin-700.woff2 type=font/woff2 crossorigin><link rel=stylesheet href=/main.d731b24f97a905b851b9151339aca0f6a9b1c45ed16584cee7a4113d98d2a3db570c096603fbf15fbe9bbf092715cc742abaea351b4767239dbfedfffc08ebdb.css integrity="sha512-1zGyT5epBbhRuRUTOayg9qmxxF7RZYTO56QRPZjSo9tXDAlmA/vxX76bvwknFcx0KrrqNRtHZyOdv+3//Ajr2w==" crossorigin=anonymous><noscript><style>img.lazyload{display:none}</style></noscript><meta name=robots content="index, follow"><meta name=googlebot content="index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1"><meta name=bingbot content="index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1"><title>PoW performance - mCaptcha</title><meta name=description content="PoW performance of native and WASM implementations. Does the native implementation have and edge over the WASM library?"><link rel=canonical href=/blog/pow-performance/><meta name=twitter:card content="summary_large_image"><meta name=twitter:image content="/blog/pow-performance/icon.png"><meta name=twitter:title content="PoW performance"><meta name=twitter:description content="PoW performance of native and WASM implementations. Does the native implementation have and edge over the WASM library?"><meta name=twitter:site content="@"><meta name=twitter:creator content="@"><meta property="og:title" content="PoW performance"><meta property="og:description" content="PoW performance of native and WASM implementations. Does the native implementation have and edge over the WASM library?"><meta property="og:type" content="article"><meta property="og:url" content="/blog/pow-performance/"><meta property="og:image" content="/blog/pow-performance/icon.png"><meta property="article:published_time" content="2021-09-01T00:00:00+00:00"><meta property="article:modified_time" content="2021-09-01T15:33:12+05:30"><meta property="og:site_name" content="mCaptcha"><meta property="article:publisher" content="https://www.facebook.com/"><meta property="article:author" content="https://www.facebook.com/"><meta property="og:locale" content="en_US"><script type=application/ld+json>{"@context":"http://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"\/"},{"@type":"ListItem","position":2,"name":"Blogpow Performance","item":"\/blogpow-performance\/"}]}</script><meta name=theme-color content="#fff"><link rel=apple-touch-icon sizes=180x180 href=/apple-touch-icon.png><link rel=icon type=image/png sizes=32x32 href=/favicon-32x32.png><link rel=icon type=image/png sizes=16x16 href=/favicon-16x16.png><link rel=manifest href=/site.webmanifest></head><body class="blog single"><div class="header-bar fixed-top"></div><header class="navbar fixed-top navbar-expand-md navbar-light"><div class=container><input class="menu-btn order-0" type=checkbox id=menu-btn>
<label class="menu-icon d-md-none" for=menu-btn><span class=navicon></span></label><a class="navbar-brand order-1 order-md-0 me-auto" href=/>mCaptcha</a>
<button id=mode class="btn btn-link order-2 order-md-4" type=button aria-label="Toggle mode">
<span class=toggle-dark><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-moon"><path d="M21 12.79A9 9 0 1111.21 3 7 7 0 0021 12.79z"/></svg></span><span class=toggle-light><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-sun"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg></span></button><ul class="navbar-nav social-nav order-3 order-md-5"><li class=nav-item><a class=nav-link href=https://github.com/mCaptcha><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-github"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37.0 00-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44.0 0020 4.77 5.07 5.07.0 0019.91 1S18.73.65 16 2.48a13.38 13.38.0 00-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07.0 005 4.77 5.44 5.44.0 003.5 8.55c0 5.42 3.3 6.61 6.44 7A3.37 3.37.0 009 18.13V22"/></svg><span class="ms-2 visually-hidden">GitHub</span></a></li></ul><div class="collapse navbar-collapse order-4 order-md-1"><ul class="navbar-nav main-nav me-auto order-5 order-md-2"><li class=nav-item><a class=nav-link href=/about/>About</a></li><li class="nav-item active"><a class=nav-link href=/blog/>Blog</a></li><li class=nav-item><a class=nav-link href=/community/>Community</a></li><li class=nav-item><a class=nav-link href=/contact/>Contact</a></li><li class=nav-item><a class=nav-link href=/docs/prologue/introduction/>Docs</a></li></ul><div class="break order-6 d-md-none"></div><form class="navbar-form flex-grow-1 order-7 order-md-3"><input id=userinput class="form-control is-search" type=search placeholder="Search docs..." aria-label="Search docs..." autocomplete=off><div id=suggestions class="shadow bg-white rounded"></div></form></div></div></header><div class="wrap container" role=document><div class=content><div class="row flex-xl-nowrap"><nav class="docs-toc d-none d-xl-block col-xl-3" aria-label="Secondary navigation"><div class=page-links><h3>On this page</h3><nav id=TableOfContents><ul><li><a href=#benchmark-tools>Benchmark tools</a></li><li><a href=#results>Results</a><ul><li><a href=#native>Native</a></li><li><a href=#browser>Browser</a></li><li><a href=#firefox>Firefox</a></li></ul></li><li><a href=#conclusion>Conclusion</a></li></ul></nav></div></nav><main class="docs-content col-lg-11 col-xl-9 mx-xl-auto"><article><div class=blog-header><h1>PoW performance</h1><p><small>Posted May 26, 2021 by <a class="stretched-link position-relative" href=/contributors/aravinth-manivannan/>Aravinth Manivannan</a>&nbsp;&dash;&nbsp;<strong>2&nbsp;min read</strong></small><p><p><small>Last Edited September 1, 2021</small><p></div><p class=lead>We are mCaptcha. We build kickass CAPTCHA systems that gives (DDoS) attackers a run for their money. And we do all of this without tracking your users. Oh and did I mention our UX is great?</p><p>mCaptcha uses a
<span class=toggle-dark><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-moon"><path d="M21 12.79A9 9 0 1111.21 3 7 7 0 0021 12.79z"/></svg></span><span class=toggle-light><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-sun"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg></span></button><ul class="navbar-nav social-nav order-3 order-md-5"><li class=nav-item><a class=nav-link href=https://github.com/mCaptcha><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-github"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37.0 00-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44.0 0020 4.77 5.07 5.07.0 0019.91 1S18.73.65 16 2.48a13.38 13.38.0 00-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07.0 005 4.77 5.44 5.44.0 003.5 8.55c0 5.42 3.3 6.61 6.44 7A3.37 3.37.0 009 18.13V22"/></svg><span class="ms-2 visually-hidden">GitHub</span></a></li></ul><div class="collapse navbar-collapse order-4 order-md-1"><ul class="navbar-nav main-nav me-auto order-5 order-md-2"><li class=nav-item><a class=nav-link href=/about/>About</a></li><li class="nav-item active"><a class=nav-link href=/blog/>Blog</a></li><li class=nav-item><a class=nav-link href=/community/>Community</a></li><li class=nav-item><a class=nav-link href=/contact/>Contact</a></li><li class=nav-item><a class=nav-link href=/docs/prologue/introduction/>Docs</a></li></ul><div class="break order-6 d-md-none"></div><form class="navbar-form flex-grow-1 order-7 order-md-3"><input id=userinput class="form-control is-search" type=search placeholder="Search docs..." aria-label="Search docs..." autocomplete=off><div id=suggestions class="shadow bg-white rounded"></div></form></div></div></header><div class="wrap container" role=document><div class=content><div class="row flex-xl-nowrap"><nav class="docs-toc d-none d-xl-block col-xl-3" aria-label="Secondary navigation"><div class=page-links><h3>On this page</h3><nav id=TableOfContents><ul><li><a href=#benchmark-tools>Benchmark tools</a></li><li><a href=#results>Results</a><ul><li><a href=#native>Native</a></li><li><a href=#browser>Browser</a></li><li><a href=#firefox>Firefox</a></li></ul></li><li><a href=#conclusion>Conclusion</a></li></ul></nav></div></nav><main class="docs-content col-lg-11 col-xl-9 mx-xl-auto"><article><div class=blog-header><h1>PoW performance</h1><p><small>Posted September 1, 2021 by <a class="stretched-link position-relative" href=/contributors/aravinth-manivannan/>Aravinth Manivannan</a>&nbsp;&dash;&nbsp;<strong>2&nbsp;min read</strong></small><p><p><small>Last Edited September 1, 2021</small><p></div><p class=lead>We are mCaptcha. We build kickass CAPTCHA systems that give (DDoS) attackers a run for their money. And we do all of this without tracking your users. Oh and did I mention our UX is great?</p><p>mCaptcha uses a
<a href=https://en.wikipedia.org/wiki/Proof_of_work>proof-of-work(PoW)</a> mechanism
to rate limit users or potential bots. In order for this to be
effective, the PoW should be configured properly. The difficulty

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<span class=toggle-dark><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-moon"><path d="M21 12.79A9 9 0 1111.21 3 7 7 0 0021 12.79z"/></svg></span><span class=toggle-light><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-sun"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg></span></button><ul class="navbar-nav social-nav order-3 order-md-5"><li class=nav-item><a class=nav-link href=https://github.com/mCaptcha><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentcolor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-github"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37.0 00-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44.0 0020 4.77 5.07 5.07.0 0019.91 1S18.73.65 16 2.48a13.38 13.38.0 00-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07.0 005 4.77 5.44 5.44.0 003.5 8.55c0 5.42 3.3 6.61 6.44 7A3.37 3.37.0 009 18.13V22"/></svg><span class="ms-2 visually-hidden">GitHub</span></a></li></ul><div class="collapse navbar-collapse order-4 order-md-1"><ul class="navbar-nav main-nav me-auto order-5 order-md-2"><li class=nav-item><a class=nav-link href=/about/>About</a></li><li class="nav-item active"><a class=nav-link href=/blog/>Blog</a></li><li class=nav-item><a class=nav-link href=/community/>Community</a></li><li class=nav-item><a class=nav-link href=/contact/>Contact</a></li><li class=nav-item><a class=nav-link href=/docs/prologue/introduction/>Docs</a></li></ul><div class="break order-6 d-md-none"></div><form class="navbar-form flex-grow-1 order-7 order-md-3"><input id=userinput class="form-control is-search" type=search placeholder="Search docs..." aria-label="Search docs..." autocomplete=off><div id=suggestions class="shadow bg-white rounded"></div></form></div></div></header><div class="wrap container" role=document><div class=content><div class="row flex-xl-nowrap"><nav class="docs-toc d-none d-xl-block col-xl-3" aria-label="Secondary navigation"><div class=page-links><h3>On this page</h3><nav id=TableOfContents><ul><li><a href=#how-does-it-work>How does it work?</a></li><li><a href=#okay-but-what-about-bad-actors>Okay, but what about bad actors?</a></li><li><a href=#why-use-mcaptcha>Why use mCaptcha?</a></li><li><a href=#how-to-migrate>How to migrate?</a></li><li><a href=#our-philosophy>Our Philosophy</a></li><li><a href=#resources>Resources</a></li></ul></nav></div></nav><main class="docs-content col-lg-11 col-xl-9 mx-xl-auto"><article><div class=blog-header><h1>Say hello to mCaptcha</h1><p><small>Posted May 26, 2021 by <a class="stretched-link position-relative" href=/contributors/aravinth-manivannan/>Aravinth Manivannan</a>&nbsp;&dash;&nbsp;<strong>2&nbsp;min read</strong></small><p><p><small>Last Edited May 27, 2021</small><p></div><p class=lead>We are mCaptcha. We build kickass CAPTCHA systems that gives (DDoS) attackers a run for their money. And we do all of this without tracking your users. Oh and did I mention our UX is great?</p><p>At mCaptcha, we believe in digital freedom and privacy and so we built an
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<a href=https://en.wikipedia.org/wiki/Proof_of_work>proof-of-work</a> based
CAPTCHA system that doesn&rsquo;t track. Seriously, no tracking. But that
isn&rsquo;t the killer feature, our system doesn&rsquo;t require the user to

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<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Aravinth Manivannan on</title><link>/contributors/aravinth-manivannan/</link><description>Recent content in Aravinth Manivannan on</description><generator>Hugo -- gohugo.io</generator><language>en-US</language><lastBuildDate>Wed, 26 May 2021 00:00:00 +0000</lastBuildDate><atom:link href="/contributors/aravinth-manivannan/index.xml" rel="self" type="application/rss+xml"/><item><title>PoW performance</title><link>/blog/pow-performance/</link><pubDate>Wed, 26 May 2021 00:00:00 +0000</pubDate><guid>/blog/pow-performance/</guid><description>mCaptcha uses a proof-of-work(PoW) mechanism to rate limit users or potential bots. In order for this to be effective, the PoW should be configured properly. The difficulty requirement can&amp;rsquo;t be too high, as it could cause accessibility issues on the client-side while at the same time, it shouldn&amp;rsquo;t be too low, as it wouldn&amp;rsquo;t offer proper protection against bots.
<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Aravinth Manivannan on</title><link>/contributors/aravinth-manivannan/</link><description>Recent content in Aravinth Manivannan on</description><generator>Hugo -- gohugo.io</generator><language>en-US</language><lastBuildDate>Wed, 26 May 2021 00:00:00 +0000</lastBuildDate><atom:link href="/contributors/aravinth-manivannan/index.xml" rel="self" type="application/rss+xml"/><item><title>PoW performance</title><link>/blog/pow-performance/</link><pubDate>Wed, 01 Sep 2021 00:00:00 +0000</pubDate><guid>/blog/pow-performance/</guid><description>mCaptcha uses a proof-of-work(PoW) mechanism to rate limit users or potential bots. In order for this to be effective, the PoW should be configured properly. The difficulty requirement can&amp;rsquo;t be too high, as it could cause accessibility issues on the client-side while at the same time, it shouldn&amp;rsquo;t be too low, as it wouldn&amp;rsquo;t offer proper protection against bots.
Malicious bots(the ones that wreak havoc), run native code which is capable of running in a multi-threaded context.</description></item><item><title>Say hello to mCaptcha</title><link>/blog/say-hello-to-mcaptcha/</link><pubDate>Wed, 26 May 2021 00:00:00 +0000</pubDate><guid>/blog/say-hello-to-mcaptcha/</guid><description>At mCaptcha, we believe in digital freedom and privacy and so we built an proof-of-work based CAPTCHA system that doesn&amp;rsquo;t track. Seriously, no tracking. But that isn&amp;rsquo;t the killer feature, our system doesn&amp;rsquo;t require the user to pick cars or ID sidewalks &amp;mdash; our system does it&amp;rsquo;s thing(usually at the click of a button) and gets out of the way.
How does it work? mCaptcha uses SHA256 based proof-of-work(PoW) to rate limit users.</description></item></channel></rss>

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