> 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-register-4-digit-cid.md).

# How to register 4-digit CID

***Connect to the Aptos network in any of the three wallets, Martain, Petra and Pontem；***

> **Download Wallet Links：**
>
> *Martain Wallet*：<https://chrome.google.com/webstore/detail/martian-wallet-aptos-sui/efbglgofoippbgcjepnhiblaibcnclgk>
>
> *Petra Wallet*：<https://petra.app/>
>
> *Pontem Wallet*：<https://chrome.google.com/webstore/detail/pontem-aptos-wallet/phkbamefinggmakgklpkljjmgibohnba>

**Currency Symbol:** APT

***Click the CID registration link***  [***https://aptoscid.coming.chat/***](https://aptoscid.coming.chat/) ***and connect the wallet***

<figure><img src="/files/H4amEw5T5ARbVtwvkimS" alt=""><figcaption></figcaption></figure>

***Enter the 4 digits you want and check for availability. The result would be ‘Available’ or ‘Unavailable’ as shown in the image***

<figure><img src="/files/NWAvRp3Ve1n2IQSITo6Y" alt=""><figcaption></figcaption></figure>

***Click the CID that is ‘Available’ and you would be redirected to the next page as shown below***

<figure><img src="/files/wHqSjrqAKt78bdIiAKJJ" alt=""><figcaption></figcaption></figure>

***After calling up the wallet for signature and waiting for 5s, you can directly see the domain name with 4-digit CID on your address***

<figure><img src="/files/6yw3L8mcKBGDMV30hmYu" alt=""><figcaption></figcaption></figure>