Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A scalable verification solution for blockchains   Bitcoin and Ethereum, whose miners arguably collectively comprise the most
powerful computational resource in the history of mankind, offer no more power
for processing and verifying transactions than a typical smart phone. The
system described herein bypasses this bottleneck and brings scalable
computation to Ethereum. Our new system consists of a financial incentive layer
atop a dispute resolution layer where the latter takes form of a versatile
"verification game." In addition to secure outsourced computation, immediate
applications include decentralized mining pools whose operator is an Ethereum
smart contract, a cryptocurrency with scalable transaction throughput, and a
trustless means for transferring currency between disjoint cryptocurrency
systems.

5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org