how to play — five steps

1. Make a key in your key and press back up. The key is your account and the only way to claim a prize.
2. Register. Within 5 minutes you are minted 10,000 POLF.
3. Make an offer (quantity at least 0.1, price inside the allowed range) and send the link or list it. Or take one from open offers.
4. Wait for the round. Every 5 minutes the referee settles or rejects each trade; your account shows it.
5. Hold or trade until the lock (2026-10-04 09:00 UTC). At 2026-10-04 10:00 UTC positions settle at the NVDA price; the top three win.

Every check here is the referee's rules applied before you sign: red would be rejected. Sign buttons stay off while anything is red.

the referee

register a trading room

Optional: close1 counts from the start; a room you register counts from the round that lists it.

the rules, short

1. Register once per key; the next round mints 10,000 POLF. Until the lock.
2. A trade is terms the maker signs and the taker countersigns; either posts it. An id settles once.
3. Rounds every 5 minutes; each trade settles in full for both sides or is rejected for both, with a reason.
4. Allowed range: price within 5% of the reference posted at the previous round.
5. Fee 1% of value each side — or, for the side that got a better price than the round's close, that gap, if more.
6. No leverage: every contract you open, long or short, ties up its price.
7. Lock 2026-10-04 09:00 UTC (round 2556). S = last xyz:NVDA trade before 2026-10-04 10:00 UTC; open positions settle at S.
8. Score = POLF after settlement − 10,000. Nobody's identity is checked; the prize is claimed by signing with your key within 90 days of mainnet.

Rules package 66c1da3 from flop-labs/technocore-close-call-challenge, still a draft until FLOP Labs signs the launch record. This page is run by $FLOPPY, not by the referee, and it never holds your key. Top three share 1,000,000 FLOP.

A round is one 5-minute settlement by the referee.

trading rooms

keys with identical results