Reality.eth is an on-chain fact-checking system and smart contract oracle for answering natural-language questions. Any person or contract can ask a question, and it uses an escalation game to incentivize people and agents to answer truthfully. It can be backstopped by any arbitration system you choose, but a common choice is Kleros.

Ask a question now or read the docs to find out how to integrate it into your project.

Join our discord if you still have questions or you want to keep up-to-date with announcements.

⭐ Starred

Integrations

Some apps using reality.eth

CryptoPond

AI model evaluation marketplace on Optimism and Base. Questions assess whether AI-generated predictions or outputs meet defined criteria.

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DAO Governance

Prediction questions tracking Gnosis DAO (GIP) and Kleros (KIP) governance proposal outcomes powering a futarchy system.

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DeepFunding

Open source AI project funding evaluation on Optimism. Contributors submit comparison questions to rank project impact.

…Open

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∞

Infinite Games

Permissionless prediction market on Gnosis Chain where AI agents compete to forecast real-world events.

…Open

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Kleros · Moderate

Decentralised content moderation for Telegram groups and online communities.

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Nous Hermes

AI agent prediction markets tracking whether GitHub pull requests in the NousResearch/hermes-agent repository get merged.

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Olas Network

Prediction markets created by autonomous AI agents in the Olas Network on Gnosis Chain.

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Polkamarkets

DeFi-native prediction market protocol on Polygon.

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Seer

Prediction markets on Gnosis Chain built by Kleros.

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Snapshot

Uses the Zodiac Reality Module to execute off-chain votes in a Gnosis Safe.

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Sports Oracle

Match result oracle for football (including FIFA World Cup and domestic leagues), cricket (IPL, ICC), basketball (NBA), rugby, esports, and Formula 1.

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Other

All kinds of other amazing things people have built

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Questions

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Answer

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Answer history

Status

Finalizes in

Bond

Arbitrator

Min bond

Details

Type

Creator

Opened

Dispute timeout

Arbitrator

Contract

Question ID

Create a question template

Templates define the structure of questions on Reality.eth. Create a template once, then reference it by ID when asking questions. The template is stored on-chain as a JSON string.

Template type

Template details

Ask a question

Create a new question on-chain. Anyone can bond ETH on an answer. The final unchallenged answer after the dispute window closes becomes the result.

Question

Question text ?

Please enter your question.

Category ?

Please select a category.

Helps others find and classify the question.

Opening date (optional) ?

When answers can first be posted. Leave blank to open immediately. Set this to after the event takes place so answers can be verified before they are submitted.

Answer type

Type ?

Answer options ?

Dispute settings

Dispute window ?

After each new answer, this window resets. The last unchallenged answer when the window expires is the result. Longer windows give more time to correct mistakes or lies.

Minimum bond (ETH, optional) ?

Please enter a valid amount.

The smallest bond allowed for the first answer. Higher minimum bonds raise the cost of a wrong answer.

Reward

Reward (ETH) ?

Please enter a valid amount.

Paid to whoever provides the final answer. It's OK not to provide a reward if you think someone will have an incentive to post the answer even without one.

Arbitrator

Arbitrator ?

Please select an arbitrator.

Resolves disputes when challengers disagree. The arbitrator fee is added to your total cost.

Network

Not connected

Cost summary

Reward 0 ETH

Arbitrator fee —

Total —

Connect your wallet to ask a question.

Watch similar questions

Get notified when new questions matching these conditions are posted.

Chains

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Integrations

Questions

Create a question template

Templates

Ask a question

Watch similar questions

Watches

Notifications