Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zecale: Reconciling Privacy and Scalability on Ethereum   In this paper, we present Zecale, a general purpose SNARK proof aggregator
that uses recursive composition of SNARKs. We start by introducing the notion
of recursive composition of SNARKs, before introducing Zecale as a privacy
preserving scalability solution. Then, we list application types that can
emerge and be built with Zecale. Finally, we argue that such scalability
solutions for privacy preserving state transitions are paramount to emulate
"cash" on blockchain systems.

28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas