HackAtom3: Alerting & Monitoring Tools

Cosmos describes itself as the "Internet of Blockchains" and it is running an competition with the objective of improving certain aspects and tooling for their validators. For the category of "...


Registration closes Sept. 26, 2018, midnight
Submission deadline Sept. 26, 2018, midnight

City of Zion Competition #3

This is another competition promoted by City of Zion, a developer community focusing on the NEO ecosystem. This time there will be no coding (or at least that is not the main focus), the competi...

neo documentation

Registration closes Sept. 11, 2018, noon
Submission deadline Aug. 11, 2018, noon

OST KIT Alpha Phase III: Embedded Wallet-Lite Challenge

This is the third challenge of 2018 from the Open Simple Token Team. The OST Kit is a platform that helps you easily create and manage the economy of your own token ("branded Token") that runs ...


Registration closes July 20, 2018, 1 p.m.
Submission deadline Aug. 10, 2018, 1 p.m.

Credit Protocol Hackathon

This events challenges you to build a dApp that makes use of "credit protocol" to solve a consumer finance problem. The focus should be on the functionality and on building the MVP, as the the jud...


Registration closes July 21, 2018, 4 a.m.
Submission deadline July 21, 2018, 4 a.m.

Alto Cryptogame Challenge

This is an on-line competition that will judge the ability of developers to build an game backed by the ethereum blockchain, more specifically by using ERC721 cryptoitems. The teams entering thi...

ethereum games

Registration closes July 4, 2018, 3:59 p.m.
Submission deadline July 4, 2018, 3:59 p.m.

The Colony Hackathon

The main objective of this competitions is to build real applications on the Colony Protocol with the colonyJS library and give feedback. Users can submit proposals in the form of extensions and...

DAI colonyJS

Registration closes June 24, 2018, 11:59 p.m.
Submission deadline June 24, 2018, 11:59 p.m.

Global Mobius Hackathon

This online hackathon follows a previous one that happened locally in San Francisco. The main objective is for you develop a dApp . To participate you will need to announce your publicly on their...


Registration closes Aug. 18, 2018, 8 p.m.
Submission deadline Sept. 8, 2018, 8 p.m.

Stellar Build Challenge #7

As said in their website, "the Stellar build challenge is an ongoing program to reward innovation and development in the Stellar ecosystem.". This means that not only new applications and use ...


Registration closes Aug. 16, 2018, 6 a.m.
Submission deadline Aug. 16, 2018, 6 a.m.

In the search for multiples paths

This challenge aims to research and discover different behaviors between two different implementations of a node of the NEO blockchain. As explained by the NEO Research community: "...we are in...


Registration closes May 30, 2018, 4 p.m.
Submission deadline May 30, 2018, 4 p.m.

NEO blockchain game development competition

Like the name suggests, the objective of this competition is to build a game that makes use of blockchain technology. According to the rules, it doesn't matter in which component of the game the b...

neo games

Registration closes Aug. 15, 2018, midnight
Submission deadline Aug. 15, 2018, midnight