There are 50 NFTs. Each one is its own prediction market — the owner sets a YES/NO question, anyone can trade on it, and the owner earns 1% of every trade for life. Scroll down to see all 50 below.
As the NFT owner you can set the question, and you accrue 1% of trade volume as owner fees.
Each NFT is a live prediction market. Owners collect 1% of every trade on their market forever. List, buy, and cancel with EIP-712 signed orders — no gas until the trade fills. Marketplace fee is 2% of the sale price.
NFT-bound binary prediction markets, priced by an on-chain LMSR AMM, settled in native ETH on Robinhood Chain.
OFT collapses two familiar primitives into one asset: an NFT and a prediction market are the same object. Each token in the collection is a binary YES/NO market on any real-world outcome its owner chooses. Prices are set by a Logarithmic Market Scoring Rule (LMSR) automated market maker running fully on-chain. Markets self-settle through Chainlink price feeds or an optimistic assertion window. The NFT owner earns a permanent 1% of every trade, forever.
“If you're a builder looking to embed stock tokens or RWA into your applications, we want to hear from you.”
OFT is a direct answer to that call. Every OFT market is a real-world outcome tokenized as a tradeable on-chain asset — the RWA primitive, embedded natively on Robinhood Chain. Full context in §9 · Alignment with Robinhood Chain.
In existing prediction-market designs, the market is an ephemeral contract deployed for a single question and abandoned after resolution. OFT flips this: the market is a persistent, transferable NFT. Ownership carries the right to set the next question, choose the resolution source, and collect the maker fee. When the NFT sells, the market it represents moves with it — the buyer inherits an on-chain track record.
This creates a secondary market for market-makers: an NFT that has hosted popular, high-volume markets becomes strictly more valuable than a dormant one, because the fee stream compounds.
Each market uses Hanson's Logarithmic Market Scoring Rule with a liquidity parameter b. The cost function is:
C(q_Y, q_N) = b · ln(exp(q_Y / b) + exp(q_N / b))
Prices for YES and NO are the partial derivatives:
P_YES = exp(q_Y / b) / (exp(q_Y / b) + exp(q_N / b)) P_NO = 1 − P_YES
Prices always sum to exactly 1 ETH per pair of shares. The cost of any trade is the difference in the cost function before and after the trade — no slippage surprises, no impermanent-loss weirdness. Larger b = more liquidity, tighter spreads, but higher seed cost for the owner (roughly b·ln 2 ETH).
setQuestion(tokenId, question, resolutionSource). Once set, the market moves from Unset to Open.Two resolution modes, chosen at question-set:
| Owner fee (permanent) | 1.00% |
| Treasury fee | 0.50% |
| Marketplace fee (secondary NFT sale) | 2.00% |
| Total taker fee per trade | 1.50% |
The 1% owner fee accrues to whoever holds the NFT at the moment of the trade. NFT sale on the marketplace transfers the future fee stream to the buyer instantly.
The collection is uncapped, but the initial Gold tier is fixed at 50 tokens (#1–#50). Silver tier begins at #51 and mints on demand. Only Gold tokens exist at launch.
| Tier | IDs | Supply | Notes |
|---|---|---|---|
| Gold | 1–50 | 50 | Founder tier, minted at deploy |
| Silver | 51+ | Uncapped | Public mint, opens after Gold clearance |
Robinhood Chain testnet · chainId 46630 · RPC https://rpc.testnet.chain.robinhood.com
| OFTNft (ERC-721) | — |
| OFTMarkets (LMSR) | — |
| OFTMarket (NFT marketplace) | — |
| OFTRendererV1 (on-chain SVG) | — |
| Explorer | explorer.testnet.chain.robinhood.com |
Mainnet addresses will be listed here after the mainnet deploy on Robinhood Chain.
Robinhood Chain is an Arbitrum Orbit L2 built by Robinhood, purpose-designed as a settlement layer for tokenized real-world assets — stock tokens, structured products, and other on-chain wrappers around off-chain outcomes. On July 14, 2026, Robinhood CEO Vlad Tenev publicly invited builders to embed stock tokens and RWA primitives into their applications.
OFT was built for exactly that surface. A prediction market is an RWA primitive — it tokenizes the resolution of a real-world event as a tradeable asset with a clean payout schedule. By making every market an NFT with a permanent fee stream, OFT gives builders and traders a composable, transferable, native-ETH-denominated wrapper around any outcome they can define. That is what it means to be aligned with Robinhood Chain: not a marketing partnership, but a matching primitive.
This whitepaper describes software currently deployed to testnet. It is not a solicitation, offer, or promise of financial return. Predictions markets carry risk; participants should only trade what they can afford to lose. Test-suite results are available on request; independent audit is recommended before any mainnet deployment.
OFT is a prediction-market protocol where every NFT is a market. Founder Gold tier (1-50), Silver tier from #51 onward. Runs on Robinhood Chain — an Arbitrum Orbit L2 — settled in native ETH.
b·ln2 ETH per market.b. Every buy skims 1% for the NFT owner and 0.5% for the treasury.| OFTNft | — |
| OFTMarkets | — |
| OFTRendererV1 | — |
| RPC | https://rpc.testnet.chain.robinhood.com |
| Explorer | explorer.testnet.chain.robinhood.com |
The contracts pass 40 tests (LMSR properties + fuzz, ATK-01..17 adversarial suite, reentrancy, invariants across 8,192 randomized calls). The full test suite and contract source are available on request for review before any mainnet deployment.