Robinhood Chain · LMSR · Native ETH

One hundred markets. One hundred NFTs.

Each NFT is a binary YES/NO prediction market. The owner sets the question, the crowd trades on an on-chain LMSR AMM, and the market self-settles through Chainlink or an optimistic-oracle challenge window. Owners earn 1% of volume for life.

100Total markets
Open
Volume · ETH
Liquidity b · ETH
All 100 markets
← Back to markets
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Owner Cycle Locks
YES
NO
Liquidity b
YES shares outstanding
NO shares outstanding
Pool collateral
Volume (this cycle)
Owner fee1.00%
Treasury fee0.50%
State
Resolution

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About POLYT

POLYT is a prediction-market protocol where 100 NFTs are the markets. It runs on Robinhood Chain — an Arbitrum Orbit L2 — settled in native ETH.

How it works

  1. NFT owner sets a question. Any binary YES/NO — "Will BTC close above $150k on Aug 31?" — plus a resolution source (Chainlink price feed or optimistic assertion). Seeding the LMSR pool costs the owner ~b·ln2 ETH per market.
  2. Traders buy shares. An on-chain LMSR AMM prices YES + NO to sum to exactly 1.00 ETH. Slippage is bounded by b. Every buy skims 1% for the NFT owner and 0.5% for the treasury.
  3. Market locks. 24h before the end of the UTC month (or on NFT sale — a transfer hook auto-locks and enables refunds).
  4. Resolution. Price-feed markets auto-resolve from Chainlink. Assertion markets use an optimistic proposal → 2h/6h/24h challenge window (tier by volume) → settle. Disputes escalate to the admin.
  5. Redeem. Winning shares pay 1 ETH each. Invalid markets refund cost basis.

Contract addresses (Robinhood testnet · chainId 46630)

PolytNFT
PolytMarkets
RPChttps://rpc.testnet.chain.robinhood.com
Explorerexplorer.testnet.chain.robinhood.com

Audit status

The contracts pass 40 tests (LMSR properties + fuzz, ATK-01..17 adversarial suite, reentrancy, invariants across 8,192 randomized calls). They have not been independently audited. Do not use with real value until they are.