BigFomo, without the hand-waving

What this is

BigFomo lists 63 traders: the ones people already watch, from the FOMO leaderboards to the trenches. 21 of them have a public wallet on Robinhood Chain whose book is tracked by FomoVaults; the rest are listed by handle alone. Each one has a curve. You buy keys on that curve; the price of the next key goes up as more are bought and down as they are sold. While you hold, every trade on that curve pays you.

The traders listed did not sign up for this and are not affiliated with BigFomo, and neither is FOMO. A profile is a public handle plus a curve. Nothing is ever posted in anyone's name, a key gives access to nothing, and any listed trader can walk in, prove the X account linked from their profile is theirs, and take the profile plus everything it has earned.

The mechanic is not new and we have never claimed it was. Markets that put a price on a person have existed before this one. What is ours is the roster, the chain it runs on, and how much of the cost we are willing to print on the page you are reading.

The curve

The key numbered n costs n² × 0.0001 ETH. Prices are set in ETH, not in dollars: key #10 costs 0.01 ETH whatever ETH is worth that day.

Buying or selling several keys at once costs exactly the sum of the individual keys, so batching changes nothing except gas.

cost(from, amount) = (S(from + amount) - S(from)) * 1e14
S(n) = n * (n + 1) * (2n + 1) / 6      // sum of squares

Key #1 belongs to the profile itself and can never be sold. It is minted for free at listing, which means the reserve held by the contract is always exactly what every remaining key can be sold for. The curve cannot run dry.

The 13%

Every trade, buy or sell, pays 13% of the curve price on top of it. It splits three ways, always:

Buying and immediately selling costs about 26%: 13% on the way in, 13% on the way out. That is written here, on the trade panel, and nowhere is it dressed up as anything else. If you flip a key you lose a quarter of it.

A buyer never earns fees on their own buy, and a seller never earns fees on their own sell. The holder cut is distributed before new keys are minted and after sold keys are burned.

Getting paid to hold

The 3% is split across all keys of that profile at the moment of the trade. Ten keys out of forty gets you a quarter of that trade's holder fee. You claim it whenever you want; unclaimed fees are not lost, they sit in the contract with your name on them.

feePerKey += holderFee / supply         // at every trade
earned(you) = feePerKey * yourKeys - alreadyPaid(you)

You get paid when the profile is traded, not when the trader posts or wins. The 3% lands whether the trader has ever heard of BigFomo or not.

The claim

A listed trader logs in with the X account linked from their FOMO profile, connects the wallet they want to be paid at, and sends one transaction. They get key #1, the 5% their curve has accumulated so far, and every future 5% goes straight to that wallet.

Here is the honest part. The contract cannot check X, and it cannot check FOMO. What it checks is an EIP-712 signature from one address, the claim signer, held by our backend. Our backend signs only after X has confirmed, through OAuth, that the person logging in controls the account our roster links to that profile. That is a centralised component, and every market built this way has the same weak point.

What the signer can do: assign an unclaimed profile to a wallet. What it cannot do: move the curve reserve, touch anyone's keys, re-assign a profile that is already claimed, or pause anything. If our signer key leaked, the worst case is profiles being assigned to the wrong wallets going forward. Existing keys and the reserve are untouchable.

A profile with no linked X account cannot be claimed at all, however similar a handle on X may look. We store no X tokens and no database. The access token is used once to read your username, then dropped.

On chain, off chain

There is no indexer and no database. Every number that moves on this site is read from the contract or reconstructed from its events on the public RPC. The only numbers that do not move are the book figures, and every one of them carries its snapshot date.

The BigFomo score

The score ranking the market is volume traded + ETH currently in the curve, both read from the chain. No followers, no impressions, no profit and loss, no weighting we could quietly change. A profile climbs because people put real ETH through it.

Contracts

One contract, no proxy, no upgrade path, no pause, no admin withdrawal of the reserve. The owner can do exactly two things: list profiles, and rotate the treasury and signer addresses. A listing that has never been traded can be removed, which exists so a typo in a handle is fixable; the moment a curve has any volume it is permanent.

The contract exposes a solvency() view returning its balance and everything it owes. Anyone can call it at any time and check that the first number covers the second.

Risks

• 26% round trip

  Buying and selling immediately loses about a quarter of your money to fees. This is the single most likely way to lose here.

• The market can stay empty

  A curve with no buyers pays nothing. Most of these profiles may never be traded and may never be claimed.

• The claim depends on our signer

  A centralised key authorises claims. It cannot touch funds, but it is a single point of failure for the claim flow.

• Nobody verified the identities but us

  Before a claim, the link between a profile and a real person is editorial. We checked every handle by hand. We can still be wrong, and we say so on every unclaimed profile.

• The book figures are a snapshot

  Marked value, exit value and token counts come from the FomoVaults snapshot of 28 Aug 2026. They are not a live feed, they can be stale, and a book can be worth a fraction of that by the time you read it. They rank nothing on this site.

• Short window, by design

  BigFomo is a product of the moment, not a multi-year roadmap. There is no team token, no airdrop and no promise of anything after the window closes.

• Unaudited code

  The contract is tested, including invariant tests on solvency, and it is not audited. Do not put in more than you would shrug off.

FAQ