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What are the application prospects of decentralized identity technology based on blockchain?

Time : 26/01/2022 Author : otzdc0 Click : + -
        In the current digital world, the importance of data privacy security is self-evident. With the rise of blockchain technology, decentralized identity based on blockchain (hereinafter referred to as "did") has gradually become the focus of attention of the technology community, and more and more developers have started to explore the scheme of using did for privacy protection. Today's Wanxiang blockchain small class will take you to understand did and its application value. The development of blockchain has brought many inspirations and innovations to identity and access technologies. Based on the decentralized network structure of the blockchain and the technical characteristics such as the data on the chain is difficult to tamper, it can establish a trust foundation for the application scenario of identity access and is expected to replace the traditional mode of relying on a third party to establish and manage trust.
        Suppose we go to a new country. According to the traditional identity management mode, we need to go to different service departments to register, register driver's license, bank account number, mobile phone number and other identity information so as to use relevant services in the future. In the centralized management mode in which information is difficult to exchange, this registration process is quite tedious. We need to go to each service window and fill in the form one by one for registration. During this period, we also need to input the password many times, provide the identity certificate with privacy information, and complete the identity verification. Did based on blockchain can greatly simplify these cumbersome processes. The user only needs to store the key identity information on the chain at the beginning, and can establish a hard to tamper and unique did.
        When users need to use the services provided by different departments in the future, they only need to authorize the relevant departments to call the required identity information from the did in an encrypted manner, which can simplify the procedures and ensure the privacy and security of the identity information. The core value of did is to return the control of identity information to the user, so that the user can generate a unique identity through a trusted system and verify the identity by means of cryptological proof such as electronic signature. In this way, both individual users and service providers can enjoy a trusted, private and safe identity information use and management process based on the blockchain. The service patterns based on did can be very rich and diverse.
        In short, the user can create a pair of public keys and private keys through the identity application on the chain, encrypt the public key hash and store it on the chain. When some applications or services need to be used, the user can verify the identity through the private key. In short, the user can create a pair of public keys and private keys through the identity application on the chain, encrypt the public key hash and store it on the chain. When some applications or services need to be used, the user can verify the identity through the private key. In addition, different from the centralized identity system, based on did, users can only provide the information they need to the service provider without exposing all privacy data, thus ensuring the privacy and security of identity information.
        The service provider can perform identity verification through trusted records on the blockchain combined with privacy computing means such as zero knowledge proof. For example, some services restrict the age of users. Users can provide relevant information to prove their age through did without disclosing detailed information such as birth date. At present, Wanxiang blockchain is also actively exploring did application scenarios and solutions based on blockchain. In combination with the development strategy of distributed cognitive intelligent digital city, Wanxiang blockchain is planning and designing a solution of secure and trusted digital avatar (STA) in the digital city scene to protect personal privacy and security and prevent the common monopoly situation in centralized organizations.
        In addition to the storage and management of personal identity information, the technical features and logic of did can also be used for other entities to broaden application scenarios and create more value. The biological asset financial service platform built by Wanxiang blockchain is a blockchain + IOT data enabling platform developed by Wanxiang blockchain and Molian technology, a partner in the field of IOT. The blockchain module is embedded in the biological asset supervision IOT equipment, and the key growth information in the life cycle of each cow is tracked and recorded in real time, including the location, daily exercise volume, weight growth, etc, Build a unique did for each cattle, digitize the physical assets, and enable the digital transformation and sustainable development of the traditional beef cattle breeding industry.
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