Blockchain-based bill write-off method, apparatus, electronic device, and storage medium

US11049115B2 · kind B2 · utility

Assignee

• Advanced New Technologies Co., Ltd. · KY

Inventors

• Xueqing Yang · Hangzhou City, CN
• Longsheng Qing · Hangzhou City, CN
• Zhen Sun · Lo Wu, CN
• Ge Jin · Houston, US
• Zhenzhong Meng · Hangzhou City, CN
• Yu Chu · Hangzhou City, CN

Key dates

• Filing date: Feb 5, 2020
• Grant date: Jun 29, 2021
• Expiry date: Feb 5, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06Q2220/00
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A target transaction to write off a target e-bill is received. In response to the target transaction, a write-off logic declared in a smart contract published on a blockchain is invoked. A bill number of the target e-bill is obtained, and whether the bill number matches an e-bill number segment maintained in a blockchain account corresponding to a bill issuer of the target e-bill is checked. In response to determining that the bill number matches the e-bill number segment maintained in the blockchain account corresponding to the bill issuer of the target e-bill, a validity check is performed on bill content of the target e-bill. After the validity check succeeds, generating a write-off completion event corresponding to the target e-bill is generated and published to the blockchain for storage.