> For the complete documentation index, see [llms.txt](https://docs.indexcoop.com/index-coop-community-handbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.indexcoop.com/index-coop-community-handbook/products/legacy-products/btc2x-flexible-leverage-index.md).

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

Discuss in [#✈️fli-discussion](https://discord.gg/RKZ4S3b)

<div align="left"><img src="/files/-M_S0FxbC-j3M3Wx5jvL" alt="" width="188"></div>

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

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 enables you to get leveraged exposure to Bitcoin using collateralized debt, without having to manage collateralized debt positions or monitor liquidation risks.

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

The methodologist behind the BTC2x-FLI is [Scalara](https://www.scalara.xyz/indices/fli). (Formerly Pulse Inc. - DeFi Pulse)

You can find the methodology for FLI on [indexcoop.com/btcfli](https://www.indexcoop.com/btcfli)&#x20;

### FLI Resources

* Blog: [Everything You Need to Know About FLI Product Parameters](https://indexcoop.com/blog/fli-product-parameters)
* Blog: [How Volatility Drift Affects FLI Products](https://indexcoop.com/blog/fli-volatility-drift)
* Blog: [Understanding the Risks of Owning FLI Tokens](https://indexcoop.com/blog/fli-tokens-risks)
* [FLI ROI Calculator](https://fli-tokens-dashboard.vercel.app/)
* [Contract Addresses](https://docs.indexcoop.com/resources-beta/technical-overview/contract-addresses)

### 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 Bitcoin 2x Flexible Leverage Index](https://medium.com/indexcoop/introducing-the-btc-2x-flexible-leverage-index-38688749b1ab)
* 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)


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