> For the complete documentation index, see [llms.txt](https://docs.helio.bet/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.helio.bet/welcome.md).

# Welcome to Helio

![](https://316850786-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQzgft8nqyzWD5lIGAKKW%2Fuploads%2F8PQOjCSfB5QeSRtKJjr1%2Fhelio-welcome-banner.jpg?alt=media)

Helio is an onchain order-book exchange for five-minute UP and DOWN markets on tokenized stock prices on Robinhood Chain. Choose a market, trade outcome shares, and collect the payout after the round settles.

An UP share wins when the closing reference is above the opening reference. A DOWN share wins when it is below. The current markets measure token prices in specific Uniswap v3 pools, quoted in USDG. They do not settle against the stock exchange's last trade or an issuer's reference price.

## The current release

The live application is an access-controlled **hTEST pilot on Robinhood mainnet**, chain ID 4663. hTEST is a separate test token with no redemption backing or monetary value. Transactions still spend real ETH on network gas.

The deployed contracts include the CLOB, round manager, hTEST collateral token, and six historical-price adapters. At the documentation check on 8 September 2026, all six market series were paused. Pausing prevents new rounds from opening. See [Pilot status and limitations](/pilot-status.md) for the dated state and completed rehearsal.

## How trading works

1. Deposit the configured collateral into your exchange balance.
2. Buy UP or DOWN shares from the order book, or place a funded limit order.
3. Sell before the trading cutoff if there is matching liquidity, or hold through settlement.
4. Collect settled shares into your exchange balance, then withdraw free collateral to your wallet.

One complete pair, one UP plus one DOWN, is backed by one unit of collateral. The winning share pays one unit. Ties and invalid rounds pay half a unit per share.

The exchange matches orders onchain. There is no Helio matching server, and deposited funds are held by the exchange contract under its accounting rules.

## Read next

* [Getting started](/getting-started.md)
* [Orders and the CLOB](/orders-and-clob.md)
* [Rounds and settlement](/rounds-and-settlement.md)
* [Contracts and deployment](/contracts-and-deployment.md)

[Open Helio](https://helio.bet) · [Exchange](https://app.helio.bet/exchange)

These docs describe the production website's source at `main` commit `5663b9923232694c1fb6582bdb6c387e2ed3ec76`. Deployment and live-state checks are dated snapshots, not a promise that market status will remain unchanged.


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