Does scaling assist privacy capabilities?

#1

Enigma is working on something called secret contracts. Data that can be kept private privacy yet run on the open blockchain. I’m doing my best at estimating exactly how it works, but i know that part of this privacy technique involves splitting the data between different nodes. Not all nodes carry the same data.
I was wondering if a scaling solution could amplify this sharding security.
Am I wrong?

#2

The general approach to scaling with privacy tech is to 1) optionally hide transaction data 2) execute the transactions within the private execution environment 3) provide a proof that this execution was done correctly to the main chain, that is exponentially cheaper to verify than execution of the transaction data. It doesn’t really matter what privacy tech is used.

Unfortunately, while this scheme has incredible properties (see: roll_up for one instantiation), it should never be used. A bug, such as one that allows the operator to mint themselves a bunch of coins, in the invariably extremely-complex off-chain circuit/code/whatever is used as privacy tech is impossible to prove on-chain. Blockchain are about auditability, not verifiability. In addition, proofs for these systems are usually extremely expensive to generate, and are monopolistic rather than competitive like mining, tending towards becoming permissioned.

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#3

Thank you, I am gonna really need to digest this.

Okay. So it sounds a bit like enigma is trying to something that’s impossible?