To withdraw bitcoin that you earned on your account to an outside address (if you do not use Coinbase) is very simple.
Step 1. Go to Purse.io and sign-in, then click your account name in the top-right. Select “Wallet” from the dropdown menu.
Step 2. Click the box that says “Withdraw Funds”
Step 3. Enter the amount of funds (bitcoin) you’d like to withdraw from your account. And, paste in the receiving address to the wallet where you’d like to send your funds (please ensure you are using a valid Bitcoin address and that you copy/paste to ensure there are no typos).
Step 4. Once the network has successfully processed your withdrawal, you will see the funds appear in the wallet for the address you provided.