Decentralized prediction market wrapping conditional tokens into ERC-20s on Gnosis and Ethereum
Seer is an on-chain prediction market protocol operating primarily across Gnosis Chain and Ethereum. It enables participants to create custom markets, trade positions, and farm outcomes using the Conditional Tokens framework. Unlike conventional platforms that keep outcome shares inside proprietary balances, Seer wraps ERC-1155 outcome positions into standard ERC-20 tokens. Traders can then exchange them directly on external decentralized exchanges.
To determine real-world event results, the protocol connects to the Reality.eth crowd-sourced oracle. If an outcome is contested, the protocol escalates the question to Kleros, a decentralized arbitration system where juror pools rule on disputes according to preset market criteria.
Market creators choose from four structural formats: Categorical markets, which resolve to one choice out of several; Multi-Categorical markets, accommodating multiple valid answers; Scalar markets, resolving to a numeric value across a designated range; and Multi-Scalar markets, which track numeric outcomes across multiple dimensions.
The project emerged within the Gnosis ecosystem and uses the network's low transaction overhead for trading and outcome token swaps. In October 2026, total value locked on the protocol stood at approximately $340,600.
Resolution workflows use Reality.eth and Kleros for contested outcomes.
Seer enables flexible ERC-20 outcome token trading and multi-type markets across Gnosis and Ethereum, but total liquidity remains modest.
Seer is a decentralized prediction market protocol deployed on Gnosis and Ethereum that integrates the Conditional Tokens framework. Its primary architectural distinction lies in how outcome shares are managed: instead of restricting trade to native contract balance sheets, Seer wraps conditional ERC-1155 tokens into fungible ERC-20 tokens. This makes position shares directly compatible with external decentralized exchanges and broader DeFi applications.
The platform supports four market structures: categorical, multi-categorical, scalar, and multi-scalar formats. This setup allows creators to move beyond basic binary questions into numeric intervals and multi-option predictions spanning political forecasting and financial markets. For market resolution, Seer relies on Reality.eth combined with Kleros dispute arbitration, establishing an on-chain, multi-tier escalation system that avoids centralized outcome reporting.
The protocol's total value locked stood at approximately $340,617 in October 2026.
Seer suits DeFi participants and Web3 communities seeking permissionless market creation and transferable ERC-20 outcome tokens on low-cost chains like Gnosis.
| Market types | Politics, Sports, Crypto, Economics, Culture, Science · unverified |
|---|---|
| Chains | Ethereum, Other |
| Resolution source | Reality.eth and Kleros · unverified |
| Market topics | Elections, Sports, Political Forecasting, Financial Markets, Disaster Management, Entertainment · unverified |
| Liquidity rewards | Yes · unverified |
Not disclosed by the provider: Settles in, Trading fees, Available in the US, KYC required, Regulated venue, Mobile app.
Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.
Converts ERC-1155 Conditional Tokens into fungible ERC-20 tokens that trade across external decentralized exchanges.
Supports Categorical, Multi Categorical, Scalar, and Multi Scalar configurations for complex numerical or multiple-choice events.
Escalates contested Reality.eth answers to Kleros jurors to settle event disputes on-chain.
Users can set resolution parameters, rules, and outcomes for custom real-world prediction events.
Executes market contracts across Gnosis Chain and Ethereum, using Gnosis for reduced transaction costs.
Lets users design custom prediction markets using categorical, multi-categorical, scalar, or multi-scalar structures with custom resolution rules.
The primary trading interface for buying and selling outcome shares wrapped as standard ERC-20 tokens.
Provides tools for exploring prediction markets.
There is no substantive feedback or discussion available regarding Seer.
Based on 1 Reddit posts and comments from the last 12 months, checked Oct 20, 2026. These are posts by users on other sites, not reviews submitted on CryptoReview.
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Seer runs on Gnosis and Ethereum. Gnosis is its core low-fee trading environment.
Seer uses Reality.eth to post questions and answers on-chain. If an outcome is contested, the Kleros decentralized arbitration court decides the final resolution.
Users can create four market types: categorical, multi-categorical, scalar, and multi-scalar. These cover single-choice selections, multi-choice outcomes, and defined numerical ranges.
Seer wraps standard conditional ERC-1155 outcome tokens into ERC-20 tokens. This allows positions to trade freely on external decentralized exchanges and integrate across DeFi protocols.
Recent public posts from @seer_pm, shown as published. Not reviewed or endorsed by CryptoReview.
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