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Kleros Products

Kleros provides a suite of decentralized applications, all powered by Kleros Court for dispute resolution. This page gives an overview of each product and its current protocol version.
Kleros V2 is the latest version of the Kleros protocol, featuring improved scalability, lower gas costs, and enhanced dispute resolution mechanics. Most products have migrated or are migrating to V2.

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Protocol Version Guide

ProductProtocol VersionStatus
CourtV2✅ Live
CurateV2✅ Live
EscrowV2✅ Live
GovernorV2✅ Live
ScoutV1🔄 V2 coming soon
Reality (Oracle)V1🔄 V2 coming soon
Proof of HumanityV1⚠️ See note below
Proof of Humanity note: PoH has its own “V2” product upgrade (cross-chain support, improved UX), but it still uses the Kleros V1 protocol for dispute resolution. Don’t confuse “PoH 2.0” (the product) with “Kleros V2” (the protocol).

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V2 Products

These products run on the latest Kleros V2 protocol.

Court

The heart of KlerosDecentralized dispute resolution using crowdsourced jurors, crypto-economic incentives, and game theory.
  • Stake PNK to become a juror
  • Vote on disputes and earn rewards
  • Create disputes via the integrated Resolver

Curate

Decentralized registriesCreate and maintain community-curated lists with economic incentives and dispute resolution.
  • Token lists, address tags, contract registries
  • Challenge incorrect submissions
  • Query registry data via subgraph

Escrow

Secure transactionsHold funds in escrow with built-in dispute resolution if parties disagree.
  • Trustless payments between parties
  • Automatic release or dispute
  • Milestone-based payments

Governor

DAO governance executionExecute governance decisions with a dispute resolution backstop for contested actions.
  • Optimistic execution
  • Challenge period for proposals
  • Integration with Snapshot

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V1 Products (V2 Migration Planned)

These products currently use Kleros V1 and will migrate to V2.

Scout

Contract & token verificationCommunity-curated safety information for smart contracts, tokens, and dApps. Integrates with MetaMask Snaps.
Scout is a frontend application that displays data from Curate registries. V2 support will come when the underlying registries migrate.

Reality (Oracle)

Reality.eth + KlerosCrowdsourced oracle system where Kleros serves as the final arbitration layer for disputed answers.
  • Powers Zodiac Reality Module
  • Enables SafeSnap for DAO governance
  • Kleros as arbitration backstop

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V1 Protocol Products

Proof of Humanity

Sybil-resistant identity registryA registry of verified humans combining video verification, social vouching, and dispute resolution.
Important: Proof of Humanity uses the Kleros V1 protocol for dispute resolution—even the “PoH 2.0” product version. The “2.0” refers to product improvements (cross-chain support, better UX), not the underlying Kleros protocol version.
  • Register as a verified human
  • Vouch for others
  • Challenge suspicious registrations
  • Cross-chain profile support (Ethereum, Gnosis Chain)

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Legacy & Retired Products

These products are documented in the Legacy section.
ProductStatusNotes
Court V1LegacySuperseded by Court V2
Resolver V1LegacyStandalone app, now integrated into Court V2
Curate V1LegacySuperseded by Curate V2
Escrow V1LegacySuperseded by Escrow V2
Governor V1LegacySuperseded by Governor V2
ModerateRetiredTelegram moderation bot
LinguoRetiredTranslation marketplace
TokensRetiredReplaced by Curate token registry

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Choosing Between V1 and V2

For new integrations: Always use V2 products when available. V2 offers:
  • Lower gas costs
  • Improved dispute resolution mechanics
  • Better scalability
  • Active development and support
For existing V1 integrations: See the Migration Guide for steps to upgrade. For V1-only products (Scout, Reality, PoH): Continue using V1 for now. Migration guides will be provided when V2 support is available.

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Next Steps

Use a product

Step-by-step guides in the Help Center

Build on Kleros

Integration guides for developers

Learn the concepts

Understand how Kleros works