> For the complete documentation index, see [llms.txt](https://4irtoken.gitbook.io/blockchainvalley/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://4irtoken.gitbook.io/blockchainvalley/4ir-applications-within-the-blockchainvalley-ecosystem/1.-4irgpt.com/2.-blockchainvalley.me/3.-4irjob.com/4.-4ircloud.com/5.-nonfungiblecertificate.com-nfc.md).

# 5. NonFungibleCertificate.com (NFC)

[**NonFungibleCertificate.com**](https://nonfungiblecertificate.com) " NFC " aims to revolutionize how certificates and identity documents are issued and validated. You can demo how it works while in the sandbox:

* **Immutability and Security**: Certificates are anchored to the Solana blockchain, rendering them immutable and tamper-proof.
* **Ease of Verification**: Enables instant validation without intermediaries, enhancing trust and transparency.
* **Ownership and Control**: Users maintain full control over their documents.

**Utility of 4IR Token**:

* Used to pay for certification services.
* Facilitates secure sharing and transfer of certificates.
* Potentially rewards users for endorsing or validating certificates.