Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CHAINGE: A Blockchain Solution to Automate Payment Detail Updates to
  Subscription Services   The rise of the subscription-based business model has led to a corresponding
increase in the number of subscriptions where a customer needs to manage their
payments. This management of payments for multiple subscriptions has become a
very complicated and insecure task for customers, especially when it comes to
renewing payment details when the card is lost, stolen, or expires. In
addition, this, mostly manual, process is vulnerable to human error, digital
frauds, and data breaches, according to security reports. Thus, in this paper,
we propose a novel approach to automate, manage and simplify the Financial
Supply Chain involved in the process of updating and managing payments to user
subscriptions. This is done by utilising the Hyperledger Sawtooth blockchain
framework, that allows a consumer to enter their payment card details in a
central digital wallet and link their subscriptions to their cards. The card
being updated triggers an event on the blockchain, which allow for the payment
details to be updated on subscription systems automatically. The verification
tests performed on the prototype of the proposed system shows that its current
implementation has been securely achieved.

11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin