For development purposes, Unlock Labs offers a set of RPC providers that you can use, for each of the networks that we support.
These RPC providers are all using the same syntax:
chainId is the id of the network you want to use (
1 is for Ethereum mainnet... etc).
You can check our Networks page to see the network that we currently support.
Each of the library that we offer comes pre-configured with these RPC providers, but can also be configured to change these.
In production, you should always use your own RPC providers.