Bitswap

> right now, the block service is accessing the datastore, so checking that in the bitswap would be rather... redundant and time wasteful.

Yeah, I'd mean do it here instead. *shrug* 

> GetBlock sends a request out, and then waits for the other peers to respond with the block. We could change this to just broadcasting the want list, and waiting for the other peers to decide to send those blocks back. This is something we need to discuss before we go much further.

It really depends on how big the wantlist is. if it spans many packets, then makes sense to send a condensed version. yeah let's discuss