• nicolas.cantu@chainaccelerator.com

Cosmos / tendermint hackathon

20 Euros
tax excl.
Meals incl.

Refund Policy:
Up to 7 days before event

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  • Location Paris Dauphine University
  • Next session April 13-14
  • Duration 2 Days
  • Languages English French
  • Participants 70

Cosmos / tendermint hackathon

Cosmos/Tendermint Hackathon


Chain Accelerator is organizing, for Tendermint (tendermint.com) and Université Paris-Dauphine’s FinTech chair, a hackathon on April 13rd-14th 2019. To be won:

  • 7 000 € from Tendermint

  • 2 000 € from Tendermint

  • 1 000 € from Tendermint

  • For a TOP 3 project, if the project is accepted by Chain Accelerator, a 6 months incubation at Station F (Paris) will be offered

  • For every participant: you will receive a link and first 50 signed up for the Chain Acc-ademy will receive a free ticket for the 2 days event Paris Blockchain Week Summit.

We reserve the right to change the distribution of the prize.


Here is a channel dedicated to the event, on our Telegram, useful if you want to meet participants: https://t.me/cosmoshackathonparis

Each team’s aim is  to build a blockchain in its entirety, compatible with Cosmos/Tendermint ecosystem, as well as the corresponding user interface. For this, participants will use Cosmos-SDK, a Golang framework allowing to easily build blockchains from modules.



Place: PARIS Université Paris-Dauphine

  • Place du Maréchal de Lattre de Tassigny, 75016 Paris

  • Hackathon’s opening at Room Raymond Aron.

  • Lecture Hall 2, 3 and 4 for team work.

  • Hall 2 for meals

  • Room Raymond Aron


  • Nicolas Cantu  co-fondateur  Chain Accelerator

  • Herve Alexandre, directeur de la Chaire Fintech chez Fondation Paris-Dauphine

  • Gautier Marin: Developer Relations Engineer

  • Billy Rennekamp: Developer Relations Engineer


Available Subjects (feel free to suggest some more):

  • Proof-of-Authority : module Build a Cosmos SDK module that lets people permissionned validator set. The validator set can add or remove a validator provided 2/3 of current validators agree

  • Universal Basic Income : moduleBuild a Cosmos SDK module with an in-built UBI logic

  • Module manager : Build an npm-like module manager prototype for the Cosmos SDK Supply-chain blockchainBuild a simple supply-chain application specific blockchain on the Cosmos SDK (with an associated module)

  • Local currency system : Build a blockchain the Cosmos SDK that lets people deploy their own local currency.

  • DID Auth : Use the DID decentraized identity standard for authorization in a module

  • Uniswap Module : Build a module that incorporates X*Y=K market making like that of Uniswap on EthereumDomain Name ServiceBuild a domain name service module like in the tutorial. Bonus: add some more complex buy/sell mechanisms

  • Scaffolding Tools : Automate the build process of generating CLI and REST server for new modules

  • ETH Token Peg Zone : Implement a zone which acts as a peg between a popular blockchain like ethereum and the cosmos ecosystem

  • Wallet : Make a web app wallet that interacts with a cosmos blockchain (bonus use the chain id as a variable so you can switch between chains)

  • Whitelist Auth : Let users authenticate off chain and gain access to a white list that gives them special permissions like 0 fees

  • Permission To Public Validator Set : Propose a system for transitioning a permissioned validator set to a public validator set

  • Validator Assesment : Make a Better Business Bureau-like entity which gives ratings of Validators based on their performance and delegator rewards

  • Social Recovery Wallet : Use the multisig capabilites to create a wallet which can be recovered by some threshold of signatures from friends or family

  • IBC MVP : Implement a MVP version of IBC (https://github.com/cosmos/cosmos-sdk/tree/develop/docs/spec/ibc) in the language of your choice.

  • Governance forum : Build a whole governance platform centered around the governance module (pre-proposal discussion, feedback, etc;)

  • TCR : Build a token curated registry that improves upon the ethereum model using fast finality, cheap transactions and asynchronous hooks

Participants: Between 50 and 75 people including: Grandes Ecoles, researchers, ideation startups, engineer and business schools, and independent geniuses.
Come with your team or come to complete an existing team.


  • Saturday 9:30 - 9:45 am: Arrival, welcome & arrangement

  • Saturday 9:45 - 10:15 am: Hackathon’s and Cosmos/Tendermint presentation

  • Saturday 10:15 - 10:30 am: Teams’ creation, Github projects and running order

  • Saturday 10:30 am - Sunday 4:15 pm: Projects development

  • Saturday 4 pm Snack break

  • Saturday 7:30 pm: doors closed

  • Sunday 9:30am: doors open

  • Sunday 4 pm Snack break

  • Sunday 4:15 - 5:15 pm: 5 minutes pitch with a working demo of each project

  • Sunday 5:15 - 5:30 pm: Panel decisions

  • Sunday 5:30 - 6 pm: Announcing winners and prize giving

  • Teams are composed of 3 to 5 persons to make between 7 and 10 teams

  • Ideally mixed: 3-4 developers + business and research

  • Possibility to develop on site or remotely

  • Wifi available, you just need to bring your stuff (laptop, chargers, ...)

  • Using Github to upload projects

  • Free food and drinks: pizzas, cakes, sodas, water, …

 About Cosmos: Cosmos is an Internet of Blockchains project. Cosmos’ purpose is to allow any developer to easily develop his own blockchain with Tendermint and Cosmos-SDK, and connect these chains to each other thanks to a protocol named Inter-Blockchain Communication Protocol.

Cosmos Resource List :


Introductory Material

Blockchain-related essential knowledge


Tendermint + ABCI



Blockchain governance

Advanced reading


 About Paris Dauphine:

Paris Dauphine University (French: Université Paris-Dauphine), often referred to as Paris Dauphine or Dauphine, is a selective public research and higher education institution in Paris, France. It is the only institution in France to be both a grande école and University. Dauphine was founded as a faculty of economics and management in 1968 in the former NATO headquarters in western Paris, in the 16th arrondissement. Dauphine is renowned for its teaching in finance, economics, law, finance and mathematics and business strategy. Dauphine is a selective university with the status of "Grand Etablissement"; this unique legal status within the French higher education system allows Dauphine to make an entrance selection of its students. On average, 90 to 95% of the accepted students received either high distinctions or the highest distinctions at their French High School National Exam results (Examen National du Baccalauréat). Dauphine is also a founding member, and now a constituent college, of Université PSL. It also belongs to the Conférence des Grandes écoles.

About Chain Accelerator:

Chain Accelerator is one of the world's leading accelerators, fully dedicated to the advancement of blockchain technology. Chain Accelerator supports a growing ecosystem: startups, protocols, universities, businesses, developers, cyber security communities and especially promising entrepreneurs, while providing investors with unique access to blockchain projects. Chain Accelerator is located at Station F in Paris to support blockchain startups around the world. Chain Accelerator is the co-organizer of CryptoMondaysParis and the Paris Blockchain Week.




Merci aux partenaires de la chaire Fintech de l'Université Paris-Dauphine :

Merci aux partenaires de Chain Acceleraror :



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