lotus-lite mode

[whyrusleeping]

Adding light client functionality to lotus should be pretty straightforward.

Functionality changes:

• start up daemon with lotus daemon --lite
• Don't sync the chain
• Fetch current chain head from some public API (trusted)
• make chainstore and statemanager be backed by bitswap
• opt out of gossipsub topics (could also stay subscribed to blocks topic, potentially useful)

[whyrusleeping]

The first thing we need to do here is to actually just get that public API set up. I think this can just be a lotus node with the ChainNotify rpc exposed (though we need to take care to not lock up everything if the other end doesnt process the updates)

[362228416]

Can be used?

[arajasek]

Status update from @dirkmc:

Currently the lite client work is behind a hidden flag (lotus daemon --lite). You can:

• Do wallet / multisig operations
• Make markets CLI / API calls as a client