> For the complete documentation index, see [llms.txt](https://docs.nf.domains/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nf.domains/nfd-docs/overview.md).
# Overview
## What is an NFD?
Non-fungible domains (NFDs) are unique, digital identities built on Algorand. Unlike traditional DNS domains, which are used to identify and locate resources on the internet, NFDs are used to identify and locate resources on the Algorand blockchain. Users can optionally link any metadata they want, with the ability to verify certain fields like Twitter, Discord, Telegram, etc.
### What is a digital identity?
In the context of blockchain, digital identities or domains are used to alias an account address into something more readable like (**silvio.algo**).
Self-chosen digital identities can be particularly powerful, as they allow individuals to define and control their own online identities, rather than being assigned one at birth. This can give users more control over how they are perceived and represented online, and can enable them to create a more personalized and unique online presence.
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# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter:
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GET https://docs.nf.domains/nfd-docs/overview.md?ask=
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