TL;DR: To create a new API key for your Coinbase account, log in to your account, go to the API settings page, and click the “+ New API Key” button. Select the permissions you want to grant to the API key and restrict IP access if desired. Complete the security verification and click “Create” to create your API key. Make sure to copy both the API Key and API Secret and save them securely, as you won’t be able to see the Secret Key again.

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Creating an API key with withdrawal permissions on Coinbase involves generating a key with the required access levels and then using it to interact with Coinbase's services. Here's a step-by-step tutorial on how to create an API key with withdrawal permissions and IP address restrictions on Coinbase:

Disclaimer: Make sure to enable 2FA (Two-Factor Authentication) on your Coinbase account for enhanced security.

1. Log in to your Coinbase account: Visit https://www.coinbase.com and log in with your email and password. If you don't have an account, you'll need to sign up for one first.

2. Access the API settings page: After logging in, click on the profile icon in the top-right corner of the page, and click on "Settings" in the drop-down menu. From there, navigate to the "API" tab.

3. Create a new API key: On the API settings page, click the "+ New API Key" button in the top right corner.

4. Select API key permissions: In the "New API Key" window, choose the permissions you want to grant to the API key. To enable withdrawal permissions, make sure to check the boxes next to "wallet:withdrawals:read" and "wallet:withdrawals:create". You can also enable other permissions like "wallet:accounts:read" and "wallet:trades:read" as per your requirements.

5. Restrict IP access: Restrict access to the API key by specifying the IP addresses allowed to use it, enter the allowed IP address that Jinca gave you in the "Allowed IPs" field.

6. Complete the security verification: Coinbase will prompt you to complete a security verification. Depending on your account settings, you may need to provide a 2FA code from your authentication app, or complete other verification methods.

7. Confirm the creation of the API key: After successfully completing the security verification, click the "Create" button to create your API key.

8. Copy your API Key and API Secret: After successfully creating the API key, you'll be presented with the API Key and API Secret. Make sure to copy both keys and and save them on Jinca, as you won't be able to see the Secret Key again.

Congratulations! You've successfully created an API key with withdrawal permissions on Coinbase.