Sidechains vs Plasma vs Sharding

1 · · June 13, 2019, 1:03 a.m.
Special thanks to Jinglan Wang for review and feedback One question that often comes up is: how exactly is sharding different from sidechains or Plasma? All three architectures seem to involve a hub-and-spoke architecture with a central “main chain” that serves as the consensus backbone of the system, and a set of “child” chains containing actual user-level transactions. Hashes from the child chains are usually periodically published into the main chain (sharded chains with no hub are theoretica...