Kleros Community Update - December 2019

Check out what we've been up to in our quest for building the future of justice in our December 2019 community update!

Kleros Community Update - December 2019
Check what we've up to in our quest for building the future of justice...

Kleros was born in May 2017 with the vision of building a decentralized justice platform, based on blockchain and crowdsourcing. In less than two years time, we've managed to complete our initial roadmap, which created the much needed support for the growth of our nascent ecosystem.

Since our previous community update in August, we've continued making great strides in the development of our platform. The team is working hard on the Generalized Token Curated Registry, Proof of Humanity, based on Vitalik's idea is in its' infancy, Linguo is getting cooked up and the Kleros governor is just around the corner.

In other news, you'll see where we've been spreading the word of Kleros and the latest growth of our passionate community, an announcement of one of the most important events in decentralized justice, a peek into our latest research and so much more!

With so many things lined up, let us begin.


In order to understand our development strategy, have in mind that Kleros' dispute resolution infrastructure is made of two sides: the arbitrable side and the arbitrator side.

Major improvements on the arbitrator side were done in our previous big release, Athena, which launched in April 2019.

In the past months, most development effort focused on building Dapps connected to Kleros Court. More Dapps means more disputes sent to the court and more cases for jurors to adjudicate.

A Decentralized List Factory

Since its launch in March, nearly 350 tokens have been submitted to Kleros’ token curated registry which was used as the backbone of Ethfinex exchange decentralized token listing process. This Dapp relies on community members to vet tokens according to a number of rules.

But the value of our TCR approach goes well beyond curating a list of tokens. It can be used to make lists of just about anything in a decentralized way: fake news sites, trustworthy plumbers, Twitter bots, you name it.

The Generalized Token Curated Registry (GTCR) enables anyone to create their own registry using Kleros' powerful cryptoeconomic incentives.

The Token Factory allows you the user to create your very own list about absolutely anything.

For now, take a sneak peak at the video below for an early version of the system.

A shill of uniswap.ninja, which is based on Uniswap but uses Kleros’ token curated registry to empower the community to decide which tokens to list.

Proof of Humanity

A common problem on the internet is the lack of sybil-resistant identity systems. Users can generally create multiple accounts using different pseudonyms to receive rewards multiple times, bias votes, write multiple fake reviews, etc.

In his keynote at ETHNew York, Vitalik suggested the creation of a curated registry to define which users are human and which are bots. This is an important piece of infrastructure for the whole decentralized ecosystem.

Recently, we launched Proof of Humanity, a project for all the crypto ecosystem to collaborate in building this registry. If you want to learn more (and collaborate!), check this document and join the Telegram group where these matters are being discussed.

“Just Use Kleros”. Vitalik suggested using Kleros for a proof of humanity application in his presentation in ETH New York.
Clément at a meetup organized at Kleros house during Devcon5 to discuss with members of other projects about Proof of Humanity.

Linguo, a Decentralized Translation Dapp

Kleros Escrow has been online for some time already, and we actively use it for paying contractors we hire for doing different kinds of work.

In the last couple of months, we launched the development of Linguo, a Kleros escrow based Dapp that people can use to contract translation work. In case a disagreement arises surrounding the quality of translation, it will be adjudicated by a Kleros jury.

An early interface of Linguo Dapp.

Decentralize Everything

Our vision is that Kleros becomes a decentralized autonomous organization which handles the disputes of the whole decentralized ecosystem (and beyond!).

In the past few months, we have conducted work to decentralize Kleros governor, which controls the minting of tokens and other aspects of the court. Very soon, this will be put in the hands of the community.

All these development result in Kleros becoming an important piece of the decentralized ecosystem.

What the Kleros ecosystem looks right now.

Our vision is that in the future, the ecosystem will look something like this:

Our vision for the future of Kleros ecosystem.

Spreading the Message

As usual, the team participates in a number of activities to spread the message of decentralized justice.

William George and Clement Lesaege presenting Kleros at an AssethFR event in Paris, October 2019.
Federico speaking at a Kleros meetup in Buenos Aires. August 2019.
Federico Ast with Maxim Izmaylov, Winding Tree and Virgile Deville, Democracy Earth from our latest meetup in Paris, December 1, 2019
Federico presenting at the Stanford International Arbitration Association (SIAA). October 2019.
Clément participating in a panel at the Belgian Centre for Arbitration and Mediation (CEPANI).
A talk by Federico at the Consejo de Estado, in front of over one thousand judges in Colombia.
Kleros icosahedron dice on Argentinian TV.
Federico interviewed on Argentinian TV about blockchain and Kleros. 

A Growing Global Community

The Kleros community is growing globally, with new Telegram groups being created in different languages.

Join the Kleros French Telegram community here!
Join Kleros Telegram community in Portuguese here!
Join Kleros Telegram community in Spanish here!



The full Ethereum community gathered again at Devcon5 held in Osaka. As is our tradition, we had our bi-annual team meeting during the conference.

The team at a Kleros meetup held in Osaka.
Federico, Sam and our dear friend Kate Sills (Agoric) at a meetup co-hosted by Kleros and Realitio.
Kleros design lead Plinio speaking at Devcon on how we use concepts of legal design to make our Dapps friendlier to the average user.
Federico’s talk at Devcon5 on the use of sortition in the history of democracy and what we can learn for blockchain governance (access the slide deck here).
Clément (France), Mat (Brazil), Stuart (Scotland), Ferit (Turkey), William (Canada) and Federico (Argentina) at Kleros’ house during Devcon. International cooperation to build the future of justice.
Devcon5 was the third conference visited by our beloved icosahedron dice. Will the next one be in Buenos Aires?


In the past few months, our recent activities focused on the use of social choice theory for situations where jurors are choosing between many possible outcomes and there is no single choice that is an overwhelming favorite.

In addition to working on minimizing strategic voting effects in the mechanism that jurors use to decide cases, we are also studying how other types of "voting" present in our protocol behave in the context of non-binary choices.

For example, as we have gone back and further developed a proposal we considered to facilitate forks - a last ditch tool for the community to move forward in the event of 51% attacks or deep schisms - we are considering how a forking mechanism should be designed to handle many different possible outcomes while minimizing issues regarding clones. We are also considering similar issues for future improvements to our crowdfunding mechanism.

Furthermore, we are looking at some of the interesting research questions around Proof of Humanity, particularly how it might be leveraged along with zero knowledge proofs to create anonymous and sybil resistant identities.

The program of the conference:"Blockchain and Procedural Law: Law and Justice in the Age of Disintermediation Automating Legal Instruments", held at the Max Planck Institute Luxembourg this December.

Moreover, we received more reports from people in this second batch of our Fellowship Program.

Tian Zhao, one of the participants of Kleros Fellowship, with Kleros director of research, William George, during ETH Waterloo. Learn more about our Fellowship of Justice program here.
Sahele and Flavio, two participants at Kleros Fellowship of Justice, presenting the program in a meetup in Sao Paulo.

Decentralized Justice, the Foundational Conference

As innovators in the field of decentralized justice, a big part of our work is about spreading the word and create a larger research community.

A conference will be held on January 31 at the University of Leicester with many scholars and practitioners in this line of study. We hope this will be the formal beginning of decentralized justice as a field of study and research.

Organized by Rossana Deplano, a participant at Kleros Fellowship of Justice and lecturer at Leicester Law School and funded by The Society of Legal Scholars, the conference will gather some of the top world experts in the fields of dispute resolution, game theory, legal innovation and deliberative democracy.

Speakers include Mimi Zou (director at the Deep Tech Dispute Resolution Lab at the University of Oxford), Bruno Deffains (Université Paris 2 Panthéon-Assas) and Mark Beer (President of the International Association for Court Administration). The keynote will be given by Colin Rule, creator of the dispute resolution systems at eBay and PayPal and founder of Modria.

If you wish to attend this foundational conference on decentralized justice, sign up here.


As we strongly stand behind our ethos of decentralization and transparency, we've prepared the periodical overview of our finances, in order to shed some light on the internal dynamics of Kleros. Check our cumulative expenses report since the beginning of the project.

The present finds us as a consolidated team, with launched products and high respect throughout the blockchain and the legaltech industry.

Righteousness, heroic courage, benevolence, respect, honesty, honour, duty and self control, The Way of the Warrior. As these virtues stand at the foundation of the samurai code of honour, so do they stand at the root of what Kleros is fighting for.

In the words of the wise Yamaoka Tesshu: "As a samurai, I must strengthen my character; as a human being I must perfect my spirit".

Kleros team at a samurai lesson in Osaka.

Join the community chat on Telegram.

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Join our Slack for developer conversations.

Contribute on Github.