> For the complete documentation index, see [llms.txt](https://docs.fiammalabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fiammalabs.io/our-product-suite/pragmatically-trustless-bitvm-bitcoin-bridge/user-guides/testnet-beta/how-to-run-the-fiamma-operator/operator-for-mac/2.-register.md).
# 2. Register
### **Sign up / Sign In**
After the app finishes set up, you will see a Sign up/Sign in page asking you to provide the referral code. Enter the **6-digit referral code** you obtained from the Fiamma team.
**a) Sign Up**
If you're entering this referral code for the first time, the Operator app will generate three wallet addresses to process transactions.
* Main address: The address operator deposits funds to
* Deposit address: The address responsible for processing deposit transactions
* Withdraw address: The address responsible for processing withdraw transactions
Please make sure to click the "Export Keys" button, and securely save your recovery phrase.
**b) Sign In**
If you've registered before, simply import your secret recovery phrase to access your account.
After you have finished Sign up/Sign in, you will see the main interface of the Operator app:
