> For the complete documentation index, see [llms.txt](https://docs.fractalbitcoin.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fractalbitcoin.io/overview/fips/fip-101-fractal-standard-indexing-service/fip-101-technical-notes.md).

# FIP-101: Technical Notes

FIP-101: Lightweight indexer is open source

-> Lightweight Indexer: [https://github.com/fractal-bitcoin/fractal-indexer](https://t.co/lnD3BYVmzW) 

-> Stake Indexer: [https://github.com/fractal-bitcoin/stake-indexer](https://t.co/mVpY8vUIkc) 

-> Deployment Docs: [https://github.com/fractal-bitcoin/fractal-indexer-deploy](https://t.co/jdPvw1vdAn)

To provide an additional safeguard for stakers under extreme situations and further reinforce the non-custodial nature of staking, we have open-sourced and deployed a standalone emergency unstake tool for index mining.

-> Repository:  <https://github.com/fractal-bitcoin/unstake-tool>&#x20;

-> Web Tool: <https://fractal-bitcoin.github.io/unstake-tool/>&#x20;

{% content-ref url="/pages/vCTvVI6EaZxPbzeEaAhj" %}
[FIP-101: Technical Notes - Node Changes](/overview/fips/fip-101-fractal-standard-indexing-service/fip-101-technical-notes/fip-101-technical-notes-node-changes.md)
{% endcontent-ref %}

{% content-ref url="/pages/i5RZnW38NgBIPrEvt6Ft" %}
[brc-20 Index State Hash Verification Scheme v2 (MuHash Version)](/overview/fips/fip-101-fractal-standard-indexing-service/fip-101-technical-notes/brc-20-index-state-hash-verification-scheme-v2-muhash-version.md)
{% endcontent-ref %}