> For the complete documentation index, see [llms.txt](https://mysteriesland.gitbook.io/litepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mysteriesland.gitbook.io/litepaper/collectibles/episode/validation.md).

# Validation

All 99 EPISODES of a book must be validated to release the [FINALCHAPTER](/litepaper/collectibles/finalchapter.md). To validate an EPISODE you need to access the book's [APP](https://mysteriesland.com/books/) and look for the VALIDATE section. The validation requirements are:

* Have in your wallet the 10 CARDS that decipher the EPISODE.
* Have the EPISODE to be validated in your wallet.

Validation will burn the selected EPISODE and mint another one immediately. 

After validation, you will be able to sell the CARDS and EPISODE as the completion of the phase has been recorded on the blockchain.

{% hint style="info" %}
Important: 

* To unlock the FINAL CHAPTER, you will need to validate 99 EPISODES of the same color/copy and in the same wallet.
  {% endhint %}

You will be able to follow your validated EPISODES in the book's [APP](https://mysteriesland.com/books/), just connect your wallet.