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Enter Web 3.0 with ONT ID

ONT Login, the decentralized identity universal login component based on ONT ID and ONT TAG, the batch verification solution have been officially released, forming a complete Ontology DID product matrix together with the on-chain credit score OScore.

The world is becoming increasingly digitized, with Web 3.0 right around the corner. With more and more of our lives being spent online, it is essential to develop a reliable and trustless way to verify who we are. Blockchain has equipped us with the technology needed to not only authenticate identities on-chain, but to do so in a way that protects user privacy. ONT ID is Ontology’s decentralized identity solution, designed to be both trustless and private, empowering users. This article outlines ONT ID’s key features, along with its complementary services, ONT Login and ONT TAG.

ONT ID is a decentralized identity framework that complies with W3C’s recommended standards for decentralized identifiers and verifiable credentials. Based on blockchain and cryptography, ONT ID can quickly identify and connect people, data and services. Decentralization, self-management, privacy protection, and ease of use are the key features of ONT ID that ensure users fully control their data and identity.

As a blockchain project focusing on bringing secure, trusted, and privacy-respecting decentralized identity and data solutions to Web 3.0, Ontology focuses on building a Web 3.0 trust infrastructure, allowing individuals and businesses to apply decentralized identity solutions whilst fully respecting user privacy. After over three years of development, Ontology released its on-chain credit system, OScore, designed for programmable reputation based on ONT ID. OScore is integrated with Wing Finance, Ontology’s decentralized digital asset transfer protocol, a real application for decentralized credit. On this basis, the newly released centralized identity universal login component ONT Login and the batch verification solution ONT TAG have further enriched the Ontology DID product matrix, bringing better product experiences for application parties and individual users. 

ONT Login

Traditional servers use the “username + password” method for authentication and login. Due to the security risks of this authentication method and the tendency of users to reuse the same password on different platforms, this brings a lot of cost, security, and user experience problems. At the same time, many services require users to bind information such as mailboxes, phone numbers, and social media accounts. Users need to prove the authenticity of this information through OAuth or verification codes. This way of information authorization increases the user’s costs.

ONT Login is a Decentralized Universal Authentication login component designed to solve these problems. By helping developers shield the details of authentication implementation, ONT Login can bring enterprises into the Web 3.0 era with secure login experience. ONT Login standardizes the centralized authentication protocol and provides front-end and back-end SDKs for rapid integration between suppliers and users. At the same time, it provides a communication interface with a decentralized identity management wallet to facilitate rapid integration of identity management applications. 


As a product for all Web 3.0 and traditional Internet application developers, ONT Login has the following advantages:

  1. No need for third-party trust: Achieve safe and effective verification of user identities and data in a decentralized manner; adopt a challenge-response authentication model and use digital signature technology to ensure the security of the authentication process.
  2. Password-free login: Users do not need to memorize complex passwords; avoids risks such as server collision with the database; improves user information security; in the decentralized identity wallet, users can verify their email, phone number, etc., and obtain relevant credentials; when logging into different service parties, you can directly show the relevant credentials, eliminating the need for multiple verifications.
  3. Independent management of information authorization: Using decentralized identification and verifiable credential technology, users can log in quickly while selectively authorizing necessary information to the server, protecting their privacy.
  4. Rapid deployment: Provide front-end JavaScript SDK, and provide back-end Golang/Java SDK suppliers to quickly integrate in minutes. 

ONT Login not only supports traditional internet platforms to achieve Web 3.0 login methods, but also supports various blockchain systems including public chain alliance chains, multiple DID methods, and multiple digital signature mechanisms. In short, ONT Login can be configured to support specific business needs.  


Due to increasingly expensive gas fees on Ethereum, it is not cost efficient to perform individual transactions to authenticate user identities. ONT TAG solves this problem by enabling applications to authorize user authentication results.

In short, ONT TAG is a complete DID-based batch verification solution. By using ONT TAG, an application can quickly obtain the user’s verifiable credentials with the user’s authorization. The authorization process is also performed whilst protecting user privacy. If and when to authorize access to user data is determined solely by the user. 

The advantages of ONT TAG are not limited to these. This set of solutions fully takes into account the verification requirements of users and applications for specific information sources. Integrating Ontology’s own resource advantages, it can provide KYC verification by multiple international authoritative identity authentication service providers including CFCA, IdentityMind, Shufti Pro, etc., as well as social account platforms including Twitter and Facebook.

When any decentralized application (dApp) or Web 2.0 application applies for a credential through ONT TAG, ONT TAG immediately retrieves the information provided by each integrated trust anchor and generates a credential. When the application initiates a request to obtain the credential from the ONT TAG, it can be automatically sent to the user through the application, and the user decides how to display the credential to the application. The entire process only takes a few minutes, is cheap, and prevents the application from collecting user data.

As people have become more aware of their digital identities and data privacy, more and more countries have established laws and regulations to protect user data. These include the European Data Protection Act (GDPR), California’s Consumer Privacy Act (CCPA), and China’s “Personal Information Protection Act”. ONT ID is a complete decentralized identity framework featuring a user credit evaluation function, universal login system, and batch verification mechanism for authentication of user data. Based on ONT ID’s previous integrations with world-renowned automobile manufacturer Daimler Mobility, decentralized music streaming and NFT platform ROCKI, Ontology is already providing solutions in a variety of technical industries.

Log into ONT.ID now to access the development documents and SDK for OScore, ONT Login and ONT TAG.