Does Kaleido support nodes in public Ethereum chains?
Kaleido currently does not support running Ethereum nodes for any of the public chains, such as mainnet or a testnet like Rinkeby, Kovan etc.
Kaleido provides the ability to create and manage permissioned blockchains, which are the main type of blockchains used by business, government and other institutions for decentralized business networks. They are separate from any public blockchains. As a result, tokens or other types of digital assets launched in Kaleido based blockchain networks are not going to be part of the ecosystems based on public blockchains. Furthermore, cryptocurrency exchanges will typically not list tokens or digital assets running on networks managed by Kaleido.
If you need to provision blockchain nodes to tap into a public Ethereum blockchain, consider using a service such as Infura.