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We no longer have to trust large companies to respect and protect our personal data. Push a new era forward by building Blockstack apps that Can't Be Evil. $15,000 in cash prizes, plus special experiences and swag are up for grabs!
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Decentralization and Digital Rights
Can't Be Evil
Join Blockstack in moving the internet forward! We're looking for developers & entrepreneurs that want to help end data breaches, predatory ad models, and the commoditization & abuse of individuals' digital identities. Enter the 'Can't Be Evil' contest by submitting an app that is private by default, leaves the user in full control of their data, and protects their fundamental digital rights. In other words, submit a Blockstack app and take your first steps into a growing ecosystem that is flipping the status quo on its head.
How It Works
Register on DevPost
Build a Blockstack App
Submit to App Mining
You can win in up to two categories with a single entry.
Most Creative Use of Lightning
Brought to you by Lightning Labs Co-founder and CEO Elizabeth Stark, this category is looking for the most creative use of Lightning in your dapps.
Most Useful Daily
Brought to you by dapp.com, the top dapp in this category will be determined by CEO Kyle Lu. His team will choose the app they find most useful on a daily basis.
Most Dappy
Judged by Brandon Kessler from Devpost, this award will go to the applications that best leverage and showcase the advantages of decentralized apps.
View prizes by category
(Most Creative Use Of)
(Most Useful Daily)
(Most Dappy)
2nd Prize
Most Creative Use of Lightning
3rd Prize
Most Creative Use of Lightning
2nd Prize
Most Useful Daily
3rd Prize
Most Useful Daily
2nd Prize
Most Dappy
3rd Prize
Most Dappy
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Elizabeth Stark, Co-Founder & CEO, Lightning Labs
Most Creative Use of Lightning
Elizabeth is a huge fan of open source, decentralized protocols. She taught at Stanford and Yale where her students studied peer-to-peer technology, privacy, open source software, and memes. She has been an active contributor to the bitcoin community, an advisor to startups in areas ranging from cryptocurrency to decentralized technology to AI, and is a fellow at Coin Center. She has a law degree from Harvard and is an avid listener of electronic music.
Kyle Lu, Founder & CEO, Dapp.com
Most Useful Daily
Kyle is a serial entrepreneur specialized in technology transformation, innovation and ecosystem expansion.Kyle is the founder and CEO of Dapp.com, the largest Dapp Store to allow discovery and use decentralized apps. He was the former partner and VP global ecosystem for Achain. He had incubated over 10 dapps and took Achain from a Chinese project to a global blockchain with a top 80 market cap. Being an evangelist for dapps, Kyle is also an author for Hackernoon, Good Audience etc. and a regular speaker for dapps market analysis and blockchain adoption.
Brandon Kessler, CEO, Devpost
Most Dappy
Brandon Kessler is the founder and CEO of Devpost, which powers most of the worlds hackathons, and whose mission is to inspire the world's software developers. Prior to that, Kessler founded independent record label Messenger Records which was repeatedly singled out for its early embrace of the internet and its creative use of grassroots promotions.
Email [email protected] if you don't see an answer you need!
Am I eligible?
You must build and submit a new Blockstack application to be eligible. If you've never registered your app for App Mining powered by Blockstack and App.co, you're likely eligible to compete. To win, you must submit your application to the App Mining program. Please see the full eligibility requirements here.
What's the deal with the early deadline?
If you submit by June 5th at 11:45pm EST, we'll automatically give you a $500 cash bonus. You will still be able to continue working on your app until the final June 30th deadline as well! If you've attended an MLH hackathon where Blockstack was a sponsor, you are only eligible for the bonus associated with that event.

The $500 bonus will paid upon final entry submission.
Can I win in multiple categories?
Yes, you can win any place (1st, 2nd, 3rd) in up to two of the three categories. For example, you could win 1st prize for 'Most Useful Daily' and 2nd in 'Most Dappy'. You could also win the top prize in two categories, 2nd place in two categories, or any combination. If you place in more than 2 categories, your top two placements will be taken. One entry per person.
Can I compete if I'm already in App Mining?
Yes, but it must be an original application, meaning it cannot be an app that provides the same function or value to its user as the one you are entered in App Mining with. If you have a more specific question on this, please contact [email protected]
Are there any other requirements for my submission/app?
Yes, apps submitted to the Can't Be Evil Contest must qualify for App Mining, so the submission requirements for that program, as displayed below, must be met. Learn more about App Mining.

Requirements: Your app should integrate Blockstack authentication for logging into your app. Your finished app should be available to the public for use. The application must use a registered domain name and the app should be hosted at a URL belonging to the domain. The app website must use a secured (https) connection.
What is App Mining?
Traditionally the term mining in cryptocurrency refers to the process of contributing compute resources to the network and earning a reward. In the Blockstack Ecosystem, instead of just mining through computation, developers mine by building apps and the Blockstack community funds them simply for being pioneers in the emerging Blockchain software market.

We believe App Mining represents a revolution in app funding, allowing small teams to bootstrap without advertising or venture capital. Each month, qualifying apps compete for funding. Qualified apps are evaluated and ranked by expert app reviewers. The better your app, the higher payout you earn.

April's run paid applications $100,000 USD, including $20,000 to Graphite, $16,000 to Gladys, and $12,800 to Recall. More on App Mining.
Register on Devpost
Step-by-step instructions and much more will be available after you register on Devpost.
Joining you in defending digital rights