0x + CoinList Hackathon

From the website: "0x has teamed up with CoinList to host an online hackathon that challenges developers, designers, and idea generators to build useful and usable products on top of 0x. We wan...

0x ZRX

Registration closes Feb. 7, 2019, midnight
Submission deadline Jan. 7, 2019, midnight

TRON Accelerator

TRON Accelerator is a program aiming to foster innovation within the blockchain industry. It consists of a online competition where developers build decentralized applications on top of the TRON pr...

dapps TRON

Registration closes Jan. 1, 2019, 11:59 p.m.
Submission deadline Jan. 4, 2019, 11:59 p.m.

OST Mainnet Bounty Challenge #1

OST is organizing a new challenge, at the time when they launched their product on the Mainnet. This Challenge is related to security and take the form of a bug bounty program. Participants are...

ost security

Registration closes Sept. 30, 2018, 1 p.m.
Submission deadline Sept. 30, 2018, 1 p.m.

NEO Creative Design Competition

In this competition the objective is to create a new design and image to the NEO project. As it is stated on their website: "The competition calls on creative individuals to help NEO improve its...

design neo

Registration closes Oct. 14, 2018, midnight
Submission deadline Oct. 14, 2018, midnight

HackAtom3: Security & Operations 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 "...

cosmos

Registration closes Oct. 2, 2018, midnight
Submission deadline Oct. 2, 2018, midnight

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 "...

cosmos

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 ...

ost

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...

ethereum

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.