Run a public RPC node

• Get a new vps
• Follow everything in this guide https://github.com/Agoric/agoric-sdk/wiki/Validator-Guide-for-Incentivized-Testnet upto Creating a Validator but dont create validator.
• RPC is enabled itself but the port 26657 is not opened to public by default. You have to go to the config file(~/.ag-chain-cosmos/config/config.toml [rpc] section) and change 127.0.0.1:26657 to 0.0.0.0:26657 and restart the node.
• If you get wrong Block.Header.AppHash error, do ag-chain-cosmos unsafe-reset-all and restart the node. Look at this mesage in discord for more details https://discord.com/channels/585576150827532298/819073555446759444/840267212304547880
• Finally check if you have done everything correctly by testing port here https://www.yougetsignal.com/tools/open-ports/