> For the complete documentation index, see [llms.txt](https://docs.brila.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.brila.finance/brila-dat/how-to/first-position.md).

# Open your first DAT position

This guide walks you from holding HYPE to holding DAT and observing how rebasing affects its displayed balance. The [explanation pages](/brila-dat/explanation/elastic-supply.md) cover the mechanics in depth.

> You will need: a wallet (MetaMask/Rabby/OKX) with **HyperEVM** added (chain `999`, RPC `https://rpc.hyperliquid.xyz/evm`), and a small amount of **HYPE** for gas and to buy with.

## 1. Add HyperEVM and connect

Add the HyperEVM network to your wallet using the details above, then open the [DAT app](https://dat.brila.finance) and click **Connect**. You should see the network indicator show **HYPEREVM** and your address appear.

## 2. Acquire some DAT

On the dashboard, select **Ape In** to open the Swap page. Swap an amount of HYPE appropriate for you into DAT. Review the quote and transaction before confirming. When the swap confirms, return to the Dashboard; **Your Bag** shows your DAT balance.

You now hold DAT. Notice it's a normal token in your wallet — it just behaves differently at rebase time, which you'll see next.

## 3. Read your two balances

Look at two numbers:

* **Your Bag** (the big number) — this is `balanceOf`, what changes on a rebase.
* **Underlying** — this is `balanceOfInternal`, your rebase-invariant internal balance.

Write both down. If a later rebase changes the scaling factor, the first changes while the second does not. A treasury mint can still dilute your percentage ownership by increasing total internal supply. See [Elastic supply](/brila-dat/explanation/elastic-supply.md).

## 4. Watch a rebase

The dashboard shows **Next Rebase In**. With current defaults, one-hour execution windows begin at 08:00 and 20:00 UTC. Opening a window does not guarantee a rebase transaction; an allowlisted keeper must commit and reveal.

After a successful reveal:

* If the protocol price is outside the ±5% deadband, the **DAT Scaling Factor** changes.
* **Your Bag** changes with it: up above the upper boundary, down below the lower boundary.
* Inside the deadband, the epoch advances but the scaling factor and your balance do not change.
* Your **Underlying** is unchanged.

That is a rebase attempt: the protocol measures its TWAP-based USD signal and, when outside the deadband, resizes existing balances to create pressure toward **$1.00**.

## 5. (Optional) Put your DAT to work

To earn DAT rewards, provide DAT/WHYPE liquidity and stake the LP token in the genesis farm. That's a task in its own right — follow [Provide and stake LP](/brila-dat/how-to/provide-and-stake-lp.md).

## What you learned

You acquired DAT and compared the displayed balance with its internal-unit basis. Next, read [The peg](/brila-dat/explanation/the-peg.md) to understand what a rebase responds to.