# Page Not Found

The URL `files/3rjGru8FhRuJmh6nY42k` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [401.3 Lesson - lightningNetwork](https://earn.blink.sv/chapter-401-lightning-network/401.03-lesson-lightning-network.md)
- [301.6 Lesson - cypherpunks](https://earn.blink.sv/chapter-301-bitcoin-why-was-it-created/301.06-lesson-cypher-punks.md)
- [101.3 Lesson - whereBitcoinExist](https://earn.blink.sv/chapter-101-bitcoin-what-is-it/101.03-lesson-where-bitcoin-exist.md)
- [302.6 Lesson - proofOfWork](https://earn.blink.sv/chapter-302-bitcoin-how-does-it-work/302.06-lesson-proof-of-work.md)
- [501.5 Lesson - toomuchEnergy](https://earn.blink.sv/chapter-501-bitcoin-criticisms-fallacies-i/501.05-lesson-too-much-energy.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://earn.blink.sv/chapter-401-lightning-network/401.03-lesson-lightning-network.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://earn.blink.sv/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://earn.blink.sv/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/chapter-401-lightning-network/401.03-lesson-lightning-network.md`).

You may also use `Accept: text/markdown` header for content negotiation.