[tomp]

Isn't the basic idea of ETH still "distributed computer" a.k.a. "pointless redoing every computation over and over" albeit with 2.0 it's sharded (i.e. only a subset of verification nodes redoing each computation)?

Still sounds wasteful, except slightly less massively so.

[dlubarov]

That's accurate, although Eth 2 is planning to use fairly small shards (128 nodes according to the current spec). So there should be ~128 nodes redoing each computation, vs several thousand in Eth 1.

Some newer projects (including the one I work on, mirprotocol.org) are using cryptographic proofs to verify each computation, to avoid re-execution entirely.