# BTC 2x Flexible Leverage Index (BTC2x-FLI-P)

<div align="left"><img src="https://2404196717-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MJY-enmfAw5ra2s-8QX%2Fuploads%2Fv3BO8QPlSylrmadsCt4P%2FCopy%20of%20BTC2x-FLI_token_logo.png?alt=media&#x26;token=06f68fe9-3417-464f-b712-852b53f4ee41" alt="" width="188"></div>

### What is the BTC 2x Flexible Leverage Index (BTC2x-FLI-P)?

The Polygon-native version of the BTC 2x Flexible Leverage Index abstracts collateralized debt management into a simple index, reproducible by an ERC20 token built on Set Protocol. BTC2x-FLI-P enables you to get leveraged exposure to BTC using collateralized debt, without having to manage collateralized debt positions or monitor liquidation risks. BTC2x-FLI-P targets a long 2x exposure to BTC and employs a flexible leverage mechanism for optimal rebalancing outcomes.

### What is the methodology behind BTC2x-FLI-P?

The methodologist behind the FLI is Pulse Inc. (DeFi Pulse).

You can find the methodology for FLI on [indexcoop.com/polygon-btc2xfli](https://indexcoop.com/polygon-btc2xfli) or [pulse.inc/flexible-leverage-index](https://pulse.inc/flexible-leverage-index).

### What's the difference between **BTC**2x-FLI and **BTC**2x-FLI-P?

[BTC2x-FLI](https://docs.indexcoop.com/index-coop-community-handbook/products/legacy-products/eth2x-flexible-leverage-index) is the original BTC2x product on Ethereum main net, while BTC2x-FLI-P is a distinct, Polygon-native product. You can find more information on how the two tokens are different in this article: [Differentiating the BTC2x Products](https://indexcoop.com/blog/differentiating-the-btc2x-flexible-leverage-products).

### Where can I buy BTC2x-FLI-P?

* Index Coop website: [BTC2x-FLI-P](https://indexcoop.com/polygon-btc2xfli)
* Slingshot (DEX Aggregator): [BTC2x-FLI-P](https://app.slingshot.finance/trade/m/BTC2X-FLI-P)
* TokenSets (Mint and Redeem): [BTC2x-FLI-P](https://www.tokensets.com/portfolio/polygon/btc2x-fli-p)

### FLI Resources

* BTC2x-FLI-P Launch Article: [Introducing the 2x and Inverse BTC FLIs on Polygon](https://indexcoop.com/blog/btc2x-fli-ibtc-polygon)
* Token Contract Address (Polygon): [0xd6cA869a4EC9eD2C7E618062Cdc45306d8dBBc14](https://polygonscan.com/token/0xd6ca869a4ec9ed2c7e618062cdc45306d8dbbc14)
* Medium: [Understanding the Risks of Owning FLI Tokens](https://medium.com/indexcoop/understanding-the-risks-of-owning-fli-tokens-cd0468843496)
* Medium: [How Volatility Drift Affects FLI Products](https://medium.com/indexcoop/how-volatility-decay-affects-fli-products-a10f94977da5)
* Medium: [Everything You Need to Know About FLI Product Parameters](https://medium.com/indexcoop/everything-you-need-to-know-about-fli-product-parameters-56dc2c26b0ab)

### Learn More

* TokenSets - [FAQs](https://help.tokensets.com/en/articles/5049454-eth2x-fli-faqs)
* CoinGecko Research
  * [Part 1: Introduction to Crypto Leveraged ETF](https://www.coingecko.com/buzz/part-1-introduction-to-crypto-leveraged-etf)
  * [Part 2: Deep Dive into Decentralized Leveraged ETFs](https://www.coingecko.com/buzz/part-2-deep-dive-into-decentralized-leveraged-etfs)
* Index Coop: [Introducing the Flexible Leverage Index (FLI), by Pulse Inc](https://medium.com/indexcoop/introducing-the-flexible-leverage-index-fli-by-pulse-inc-a369bd422ef)
* Pulse Inc: [Introducing the Flexible Leverage Index](https://pulseinc.medium.com/introducing-the-flexible-leverage-index-5ec90f2381ce)
* View from the Nest \[starts at 18:35] - [Audio interview with Scott Lewis of DeFi Pulse](https://indexcoop.substack.com/p/view-from-the-nest-podcast-4)