Welcome to Kleros
Kleros is a decentralized dispute resolution protocol that uses blockchain and crowdsourced jurors to adjudicate disputes fairly, transparently, and affordably.I want to be a juror
Stake PNK, vote on disputes, earn rewards
I want to use a product
Curate, Escrow, Proof of Humanity, and more
I want to build with Kleros
Integrate dispute resolution into your application
I want to understand Kleros
Learn the mechanics, game theory, and economics
Kleros Court
How it works
Understand the dispute resolution process
Become a juror
Step-by-step guide to staking and voting
Integrate Court
Add dispute resolution to your application
Products
Kleros products are decentralized applications that use Kleros Court for dispute resolution.Kleros V2 is here. Most products now support V2, with remaining products migrating soon. See the Products Overview for version details.
Curate
Decentralized lists & registriesCreate and maintain community-curated registries of anything—tokens, contracts, addresses, or custom data.V2
Escrow
Secure transactionsHold funds in escrow with built-in dispute resolution if something goes wrong.V2
Governor
DAO governanceDecentralized governance execution with dispute resolution for contested proposals.V2
Scout
Contract & token verificationCommunity-curated safety information for smart contracts, tokens, and dApps.V1 • V2 coming soon
Reality (Oracle)
Reality.eth + KlerosCrowdsourced oracle with Kleros arbitration as the final backstop for disputed answers. Powers Zodiac/SafeSnap.V1 • V2 coming soon
Proof of Humanity
Sybil-resistant identityA registry of verified humans, combining social vouching with dispute resolution.V1 protocol
Looking for V1 documentation?
Court V1, Resolver, and retired products (Moderate, Linguo, Tokens) are documented in the Legacy section.
For Developers
Build trustless applications with decentralized dispute resolution.- New to Kleros?
- Build an arbitrable app
- Build on a Kleros product
Start here if you’re exploring how to integrate Kleros into your project.
Understand the architecture
Learn how the arbitrator (Court) and arbitrable applications work together.Read the overview →
Try the quick start
Get a basic integration running in 5 minutes.Quick start guide →
Explore examples
See real-world integration patterns.View examples →
Reference: Contract addresses, ABIs, and APIs
All the technical details you need for integration
Learn the Concepts
How dispute resolution works
The complete lifecycle of a Kleros dispute
Game theory & incentives
Why jurors are incentivized to vote honestly
Court hierarchy
Specialized courts and appeals
Token economics
How PNK staking and rewards work
Credible neutrality
Why Kleros decisions can be trusted
Sortition
How jurors are randomly selected
Research & Academia
Kleros is built on peer-reviewed research and collaborates with leading institutions.Research partnership? Kleros collaborates with universities and research institutions including Stanford. Get in touch →