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.

翻译：订户业务模式的兴起导致客户需要管理付款的订户数量相应增加,对多订户付款的管理已成为客户一项非常复杂和不安全的任务,特别是当卡丢失、被盗或过期时更新付款细节;此外,根据安全报告,这一程序,主要是手工操作,容易发生人为错误、数字欺诈和数据破坏;因此,我们在本文件中提议采用新颖办法,使参与更新和管理用户订阅付款过程的金融供应链自动化、管理和简化。这是通过利用超利格尔·索牙链链框架实现的,该框架允许消费者在中央数字钱包中输入其付款卡细节并将其订阅与卡片连接起来。正在更新的卡片触发了闭锁上的活动,从而可以自动更新订户系统的付款细节。对拟议系统原型进行的核查测试显示,其目前的执行情况已经安全完成。