Bridge is the application we built for interacting with Azimuth, the Urbit PKI, and managing your Urbit ID. Importantly, Bridge also allows you to generate a keyfile that you will need to boot your ship so that it can use the Arvo network.
This guide assumes that you have an Urbit ID, or that you have found someone to send an Urbit ID to your Ethereum address and are looking to claim it.
To connect to Bridge, go to https://bridge.urbit.org into your browser, and enter your identity's credentials in the appropriate fields. If you were invited to claim an Urbit ID, it's very likely that you received an email that would direct you to Bridge, and you can simply follow the hyperlink in that email.
Once you arrive, proceed through the steps presented. You'll eventually arrive at a page with a few choices:
Admin is the only option that you're interested in right now; click on it. On the
Admin page, click the
Download Arvo Keyfile button. Once you have downloaded the keyfile, you can exit Bridge and proceed to install the Urbit binary.
Alternatively, Bridge can be run locally. It's more complicated, but we recommend this option for managing sufficiently valuable assets, such as several stars or more. To install local Bridge, navigate to the release page on GitHub. Download the
.zip file of the latest version. After you download it, follow the instructions below.
To use Bridge:
- Unzip the .zip file that you downloaded (bridge-$version.zip).
- Open up your command line interface (Terminal on OSX, Command Prompt on Windows).
- Navigate to the bridge-$version directory, where $version is the appropriate version number.
- Run this command:
python3 -m http.server 5000 --bind 127.0.0.1.
You can then use the Bridge app by navigating to
http://localhost:5000 in your internet browser.
Note: Bridge allows you to both make reads and writes to the Ethereum blockchain. Writing to the blockchain, such as changing your networking keys, will incur a transaction cost that will require you to have some ETH in your address.
Once the program is running in your browser, go through the steps presented according to the type of wallet you have. You’ll be presented with a few login options. A notable option is Urbit Master Ticket. This is for those who used our Wallet Generator software. If you bought points from an Urbit sale and then used the Wallet Generator, your networking keys will be set for you. All other login options will require you to set your own networking keys.
Accept your transfer
If you were given points by Tlon you likely already fully own them. But if someone else sent you a point, then you will first need to use Bridge to accept that transfer.
After you access your Ethereum address, if a point was sent to that address, you'll come to a page that has an
Incoming Transfers header, under which is a graphic. Click the
Details -> link under that graphic.
Now you'll be on the management page of your point. The transfer isn't completed yet, so click
Accept incoming transfer. Then check both boxes and and click their associated
Sign Transaction and
Send Transaction buttons.
If you already own a point, click on the
Details -> under your sigil in the
Your Points section.
Set your networking keys
If you just accepted a point, you'll be returned to your point screen. Notice that that links and buttons are now clickable. You now own this point!
Click the link that says
Set network keys. The field presented in the resulting page expects a 32-byte hexadecimal string. If it's filled already, no action is required. If it is empty, you will need to generate such a string. You can generate this data any way you please, but in the terminal on MacOS or Linux, you can write
hexdump -n 32 -e '4/4 "%08X"' /dev/random
and use the result.
It should be noted that setting your network keys is an event on the Ethereum network and will therefore cost a trivial, but non-zero, amount of gas to complete.
Generate your keyfile
From the detail page associated with your point, click the
Generate Arvo Keyfile link and you'll be taken to a page with a field titled
Network seed. This field should already be filled in, and should match the hexadecimal string that you entered in the previous step. If it's not filled in or does not match, fill it in with the correct string.
Generate ->, which will download a keyfile onto your machine.
With that keyfile in hand, you can now exit Bridge and continue to the guide to install the Urbit binary.