Upgrade Chains.Details to support multiple Web3URLs per network #7
Description
Right now the Web3URL is the only way the Dapp knows which chain it's on -- we have a mapping here in the types package. Eventually we will want to be able to add new URLs for the Eximchain network, so this issue is here to remind us of that. Note that because the Web3URL is the "key" telling us the correct network, removing one of the existing URLs would require a manual DB migration.