Establishing the legal validity of electronic invoices
New data decline epidemic, the country welcomed the resumption of production resumption tide, many companies find that years ago led invoice was empty, and the urgent need to apply for an invoice. For enterprises are facing shortage of invoices and 'non-contact' service needs, Beijing's first block chain ordinary electronic invoice in Hanwei International Plaza parking lot, which means that Beijing tax service management for the first time into the block chain era.
In the current outbreak, the block chain with the natural advantages of electronic invoice "non-contact" to provide businesses and consumers with a guarantee of personal safety, especially in the subway, hospitals and other crowded places, non-contact invoice services so that more many people feel at ease.
Electronic invoice refers to units and individuals in the purchase and sale of goods, services and other business activities, the issued or made electronically stored receive proof of payment. It broke through the traditional concept paper invoices, with many of the advantages of real-time, low cost, easy storage.
The key core issue electronic invoices presence and promotion: how to implement electronic invoicing unique, non-repudiation and tamper-resistant.
April 2015 "People's Republic of China Electronic Signature Law", its complement the "electronic authentication service management approach" simultaneously. From the legal point of view to solve the fundamental problem exists promotion of electronic invoices, electronic invoices across the country use to lay a solid foundation.
Electronic signature invoice anti-fraud principles
In layman's terms, it is the electronic signature by signature encryption technology for electronic documents in electronic form, not a digital image of a written signature. In fact, it is an electronic code that use it, the recipient will be able to easily verify the identity of the sender on the Internet and signature. It can also verify the original document during transmission or without changes.
If someone wants to send an important document via a network of people to the field, both the sender and recipient need to first apply for a license authority CA an electronic license that CA's public key certificate. The encrypted certificate including the applicant in a public key that is online "public computer passwords" for file verification.
After receiving an encrypted electronic file, issued by the recipient using the CA public key to decrypt and read the file. If you find downloaded to electronic invoices without electronic signature or electronic signature is a picture of an invoice, can not be verified, it can be considered to have received the invoice is a security risk or false invoices, it can be reported to the local tax authorities.
国家一直致力于从以票控税向信息管税管理转变提供支撑，利用区块链技术破解行业痛点，让各平台间的发票信息共享变成现实，同时结合当前疫情下，企业间『非接触』的服务需求，新的区块链签章产品应运而生。
区块链签章核心技术
（1）基于区块链的签章数据存储：传统的电子签名及其管理系统均是数据中心化的集中化存储，每个节点的认证，均需要中心端的许可，每次用印记录必须实时上传中心，这种模式天然存在弊端。利用区块链去中心化、信息不可伪造、不可篡改的技术特点，可以打造更安全、更方便的电子签章模式；
（2）基于区块链的签章数据共享：利用区块链分布式数据存储技术，将数据同步传送给合同方、司法鉴定中心、公证处，保全中心等，多方共同组织形成一条签章联盟链，同时在线出具司法鉴定证书、公证书。当债务人未履行合同义务时，可凭公证机构签发的执行证书，直接向人民法院申请强制执行；
（3）基于区块链的签章身份验证：在区块链签章中，用户使用CA证书的同时，结合最新的区块链技术，使用用户自己公链全节点生成的，真正去中心化的区块链地址公钥，作为附加的签章身份认证工具。因为该地址公钥是通过用户个人的公链全节点生成，并且可以随时跟根据用户需要生成新地址公钥，全球唯一不可复制，因此区块链签章签署后，电子合同具有更强的安全性。
