> For the complete documentation index, see [llms.txt](https://docs.0y.world/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.0y.world/getting-started/what-is-0y-markets/example-btc-up-or-down-15-min.md).

# Example: BTC up or down - 15 min?

Imagine a market that asks:

> **“Will BTC close higher or lower in the next 15 minutes?”**

On 0Y Markets, you don’t need to be a pro trader to join. You simply choose one side and stake an amount.

#### Step 1) Pick a side: Higher or Lower

* HIGHER means BTC’s close price at the end of the 15 minutes is higher than the starting reference price.
* LOWER means BTC’s close price at the end of the 15 minutes is the same or lower than the starting reference price (depending on the market rule shown).

> Important: Every market shows its exact resolution rule to determine the payout

#### Step 2) Odds move as the market moves

0Y shows you live odds for each side. As more people pick HIGHER or LOWER (and as the market conditions change), the odds update in real time.

A simple way to think about it:

* If a lot of people believe BTC will close higher, HIGHER becomes less profitable (more expensive / lower payout).
* If fewer people believe BTC will close higher, HIGHER becomes more profitable (better payout).

#### Step 3) Stake, confirm, and see your payout preview

Before you confirm your position, 0Y shows:

* Your desired amount in USD
* Your chosen side (HIGHER / LOWER)
* Current latest odds
* Your potential payout if you win

So you always know the possible upside before you lock it in.

#### Step 4) Wait for the market to close and settle

When the 15 minutes are up, 0Y resolves the market using the listed data sources (e.g., Binance live feed API, Chainlink Data Streams, and other providers as stated in the rules).

* If your side is correct → you win and your payout is credited.
* If your side is wrong → your stake is lost.

#### Real example with personas

1. Alice thinks BTC will pump in the next 15 minutes. She selects HIGHER and stakes 20 USDT.
   1. If BTC closes higher at the end of the 15-minute window → Alice wins.<br>
2. Ben thinks BTC will cool off. He selects LOWER and stakes 20 USDT.
   1. If BTC closes lower (or matches the rule’s “lower/equal” condition) → Ben wins.


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