> For the complete documentation index, see [llms.txt](https://docs.galactica.com/galactica-network-faq/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.galactica.com/galactica-network-faq/6.-galactica-zk-vault-snap-for-metamask-devnet/what-does-the-snap-do.md).

# What does the Snap do?

* Manage zero-knowledge certificates to hold your identity in self custody.
* Generate zero-knowledge proofs of selective disclosures for
  * Compliance with dApp requirements
  * Keeping personal data private
  * Sybil resistance
  * Proof of personhood
  * Human centric voting
  * and many more use cases...
* Always asks you for confirmation before disclosing personal data
* Generate a holder commitment to bind a ZK certificate to an account owning it without revealing the link to the guardian.