Overview of Multi-hop Transfers

The token bridge also supports "multi-hop" transfers, where tokens can be transferred between remote chains via the home chain. To illustrate, consider two remotes R_a and R_b that are both connected to the same home H. A multi-hop transfer from R_a to R_b first gets routed from R_a to H, where the remote balances are updated, and then H automatically routes the transfer on to R_b.

In this example, our R_a chain is Echo, our R_b chain is Dispatch, and H chain is the Avalanche C-Chain.

What we will do

1. Deploy a new ERC20TokenRemote contract to Dispatch
2. Register the new ERC20TokenRemote contract with the TokenHome contract on the Avalanche C-Chain
3. Perform a multi-hop transfer of a token from Echo to Dispatch, with a 'hop' through the Avalanche C-Chain