What does two periods of did mean?

DID, Decentralized Identifiers, is one of the more popular blockchain technologies at present. It is a decentralized identity system provided on the blockchain.

Unlike traditional identities, DID does not need to rely on a single centralized organization for verification and management. Instead, users hold and control their own identity information, and users have complete control.

DID has a wide range of applications and covers many fields.

Among them, identity authentication is one of the most common application scenarios.

For example, when we need to log in to a website or use an application, DID can replace the traditional username and password to achieve more secure and decentralized identity authentication.

In the financial field, DID can also be used as a real-name authentication tool to effectively prevent financial fraud and other problems.

In addition, there are many application areas such as social networks, digital certificates, and digital ID cards.

With the development and popularization of blockchain technology, DID will play more and more roles.

It can protect users' personal privacy information and data security in the digital economy era, and promote the sustainable development of the digital economy.

In the future, DID will also need to face issues such as data governance, standardization, and interoperability.

At the same time, the application of DID will also expand to a wider range of fields, such as smart cities, digital health, etc., and continue to promote the development of the digital economy.