Live round #—
Locked--left
- Lock price
- —
- Live price
- —
- Move
- —
- Model P(up)
- —
Up pool —Down pool —
You are not in this round.
Free-play rounds · settled on live Hyperliquid mids
Call the next minute. Settle on the real tape.
Every Flipround round locks on a live market price and closes on a live market price. You pick up or down with free points, a simulated crowd fills the other side, and the pot splits the way a parimutuel pool really would. Nothing to buy, nothing to lose.
CA
- Markets
- 0
- Round lengths
- 30s · 60s · 3m
- Real money
- None
MarketLast1mUp odds
Next 60s round locks in
--
SOL · last 30 min
Rounds settled here0
Your points1,000
Hit rate—
Tape latency—
01
The table
Pick a market and a round length. The live round is locked and running; the next round is open for your call. Free points only.
Next round #—
Open · locks in --sPoints only. A tie (same price to the cent of a basis point) refunds every stake.
Crowd so far simulation
Prices: Hyperliquid allMids, polled every 2 s; the lock is the first mid at or after the lock second, the close is the first mid at or after the close second. The crowd is a labelled simulation: its stakes are drawn around the model odds so pots look like real pools. Your points live in this browser.
02
The life of one round
- Open. The board takes calls. Up and down pools fill; the payout on each side moves with every stake.
- Lock. On the lock second the first live mid becomes the lock price. Picks close.
- Run. The ring counts down while the real price wanders around the lock line. The model re-prices P(up) every tick.
- Settle. The first mid after the close second decides it. The winning side splits the whole pot, minus the house cut you set.
03
Odds lab
How likely is a move of a given size inside a given window? The lab measures realised volatility from the last 120 one-minute Hyperliquid candles and prices the question with a driftless log-normal model.
04
Pot-split calculator
A parimutuel round has no bookmaker price. The winners split the losers' pool in proportion to their stakes. Put in any pools and see exactly what a pick pays, and what hit rate it needs to break even.
05
Results board
Every round this browser has watched, with the real lock and close mids it was decided on. Re-check any row against Hyperliquid's own one-minute candle for that window.
| Round | Market | Lock | Close | Move | Result | You | Check |
|---|---|---|---|---|---|---|---|
| No rounds settled yet. The first one closes within a minute of opening this page. | |||||||
06
Your scorecard
Connect a wallet and your points, streak and hit rate are kept under your address on this device. Sign the card to prove it is yours, and see which of the board's markets you actually hold on mainnet.
Points1,000
Rounds0
Hit rate—
Best streak0
Net vs start0
Avg win—
Sign this card
Your wallet signs a plain-text summary of the card. Free, off-chain, no transaction. Anyone can check the signature against your address.
Your markets on mainnet
Reads the SOL balance and the associated token accounts for every Solana-native market on the board (SOL, JUP, BONK, WIF, FARTCOIN, PUMP).
Reset
Out of points? Reset this card to 1,000. It only touches this browser.
07
How it works
- A
Real prices in
Your browser polls Hyperliquid's public
allMidsevery two seconds and Jupiter's price API every fifteen for Solana tokens. No server in the middle touches the numbers. - B
Rounds on the clock
Rounds start on whole multiples of their length, in UTC. A 60 s round opened at 14:02:00 locks then and closes at 14:03:00, for everyone, everywhere.
- C
A labelled crowd
Free-play needs a counterparty, so a simulated crowd stakes around the model odds. It is marked as a simulation wherever it appears.
- D
Points, not money
Points cannot be bought, sold or withdrawn. The wallet is only used to read public balances and to sign your scorecard.
08
What is live, what is a model
Live
- Lock and close prices (Hyperliquid mids)
- One-minute candles behind the volatility
- Jupiter spot cross-check for Solana tokens
- Your SOL and token balances (mainnet RPC)
Model
- Up odds: driftless log-normal on realised σ
- Odds lab probabilities
- Payout multipliers shown before a round fills
Simulation
- The crowd and its stakes
- Pools and payouts, which follow from the crowd
Never
- Real-money bets or on-chain wagers
- Custody, deposits or withdrawals
- Any transaction from your wallet
09
Questions
Can I win anything of value?
No. Flipround is free-play. Points have no cash value, cannot be transferred, and live only in your browser's storage.
Why Hyperliquid mids?
They are a public, keyless, fast mid-price for dozens of markets, updated every block. The mid is the average of best bid and best ask, so a single trade cannot spike it the way a last-trade print can.
What happens on a tie?
If the close mid equals the lock mid exactly, every stake is refunded. With five-plus significant figures this is rare on 60 s rounds but common on very quiet markets.
How are the up odds computed?
σ is the standard deviation of the last 120 one-minute log returns. With τ minutes left and the price at S against a lock of L, P(up) = Φ(ln(S/L) ÷ (σ√τ)). Before lock it is 50% by construction, which is why the model treats each new round as a coin flip.
What if my tab sleeps?
Browsers throttle hidden tabs. When you return, Flipround settles any round it can still decide from the samples it has; if it missed the close second by more than 10 s, it settles that round from Hyperliquid's one-minute candle and marks it as candle-settled.
Does connecting my wallet cost anything?
No. Connecting shares your public key. Signing the scorecard is an off-chain message signature with no fee and no transaction.