[momack2]

Totally agree with you. This is an issue for most open membership p2p networks. Effectively, you need to create some type of reputation system or barrier to accruing power to make it harder for attackers to DOS/manipulate the network than for well-behaving nodes to operate it. IPFS definitely thinks about resistance to a variety of attacks like the ones you describe - but we still have a ways to go. Next steps might look like improvements to the DHT, or other more selective content routing solutions (ex, expanding on our dht-client vs dht-server designation to make content routers more selective/reputation-based).

Check out our most recent research discussion for some thoughts about how we might scale up Sybil resistance in p2p networks: https://www.youtube.com/watch?v=L4SJzoKHKPk

[ChristianBundy]

Alternatively, you can have human-centric P2P networks like Scuttlebutt and Dat where you don't have to worry about sybil attacks. It's a trade-off, because these networks are invite-only, but once you're in you're good to go.