From @JustinDrake on Tue Nov 22 2016 15:59:55 GMT+0000 (UTC)
The IPFS whitepaper (draft 3) states for S/Kademlia:
One scheme includes a proof-of-work crypto puzzle to make generating Sybills expensive.
Generating an IPFS identity is very fast on my computer and I don’t see any code pointing to proof-of-work. Does IPFS use (or plan to use) proof-of-work to fight Sybills?
Copied from original issue: https://github.com/ipfs/faq/issues/193