Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: When Services Computing Meets Blockchain: Challenges and Opportunities   Services computing can offer a high-level abstraction to support diverse
applications via encapsulating various computing infrastructures. Though
services computing has greatly boosted the productivity of developers, it is
faced with three main challenges: privacy and security risks, information silo,
and pricing mechanisms and incentives. The recent advances of blockchain bring
opportunities to address the challenges of services computing due to its
build-in encryption as well as digital signature schemes, decentralization
feature, and intrinsic incentive mechanisms. In this paper, we present a survey
to investigate the integration of blockchain with services computing. The
integration of blockchain with services computing mainly exhibits merits in two
aspects: i) blockchain can potentially address key challenges of services
computing and ii) services computing can also promote blockchain development.
In particular, we categorize the current literature of services computing based
on blockchain into five types: services creation, services discovery, services
recommendation, services composition, and services arbitration. Moreover, we
generalize Blockchain as a Service (BaaS) architecture and summarize the
representative BaaS platforms. In addition, we also outline open issues of
blockchain-based services computing and BaaS.

10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc