> For the complete documentation index, see [llms.txt](https://docs.coming.chat/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coming.chat/english-manual/how-to-log-in-with-4-digit-cid.md).

# How to log in with 4-digit CID

***Find the Aptos address you used to lease your 4-digit CID***

***Export the mnemonic or private key corresponding to the Aptos address, and you can find the 4-digit CID to log in to ComingChat***

**Open ComingChat,** if you are logging in, please log out first, 4-digit CID does not support \[Switch Account] now.

<img src="/files/0ckukbbxpiTCdMVSWVwh" alt="" data-size="original">

![](/files/BM2iLepB9edTLbvnzD9q)

![](/files/QJGxtVcOwaEUVE0O49w4)

***Because you are the owner of a 4-digit CID, you can open a chat with GPTBot***

![](/files/eZ281A51xi5lUOUYzBVw)

***You can go to your wallet and check your 4-digit CID under the Aptos network***

![](/files/z4KnjHK6UcA98zFR7IoT)

![](/files/XvQj7YP8JBwiDJOsfWpb)