Polygon, a layer-2 scaling protocol for Ethereum, has launched a zero-knowledge decentralized identity solutionto the public nearly a year after announcing its development.
The Polygon ID service uses zero-knowledge proofs (ZK proofs) that use cryptographic techniques to allow users to verify their identity online without having their sensitive information passed or potentially stored with a third party.
Polygon Labs publicly released Polygon ID on March 1, almost 12 months after the project was officially launched in a closed-source environment.
The Polygon team says Polygon ID was built to “solve the issue of digital trust.”
ZERO KNOWLEDGE IDENTITY FOR WEB3The Polygon ID team is excited to announce 4 tools have been released in the #PolygonID Identity Infrastructure to build a more equitable internet that places identity at the center of it.The future is self-sovereign⛓https://t.co/h66KyDurJE pic.twitter.com/jTBbzBNVJk
— Polygon (@0xPolygon) March 1, 2023
“What sets Polygon ID apart from most other decentralized ID frameworks is its implementation of zero-knowledge technology, allowing users to verify their identities or other credentials without necessarily revealing sensitive information,” Polygon said.
The public release introduces four new tools to the Polygon ID toolset — Verifier SDK, Issuer Node, Wallet SDK and Wallet App — that will allow Polygon developers to integrate decentralized identity into their applications.
A simple chart explaining how Polygon ID interacts with user credentials. Source: Polygon
Users will be able to produce zero-knowledge proofs using off-chain credentials — such as their passport, national ID or a bachelor's degree — to interact with smart contracts and verify information on-chain.
“This means that off-chain data can now be used for trustless on-chain verifications in the widely-supported Verified Credential format.”
Polygon claims it’s also the first ZK-based digital ID tool that allows users to hold credentials locally on handheld devices such as smartphones, and that users will no longer need passwords:
“Passwordless logins exchange encrypted verifiable credentials by simply scanning a QR code or connecting to a desktop wallet. Organizations can benefit from improved security, a better user experience, and productivity of their system administrators whose time is not taken up by password resets.”
The co-founder of Polygon ID, David Schwartz, said in a March 1 tweet that the product was built “on the latest decentralized identity standards” which will help protect developers and users against unauthorized access from third parties.
Polygon ID’s ZK-based technology enables developers to build solutions to allow users to store their personal information privately and securely while giving them full control over who has access to their data.
— David Schwartz (@davidsrz) March 1, 2023
"Providing identity in a way that the average consumer can use is the holy grail of digital ID adoption,” he explained in a separate press statement.
Multiple projects have already committed to integrating Polygon ID upon launch, such as Web3 infrastructure provider Kaleido, ID verification solution Fractal and Web3 community management system Collab.Land. Together they have a user base of over 4 million, according to Polygon.
Other Web3 projects, such as metaverse platform The Sandbox and blockchain builder community Guild.xyz, are in the process of integrating Polygon ID too.
Following the news, the price of Polygon’s native token, MATIC (MATIC), increased 2.5% from $1.22 to $1.25 in a matter of hours before falling back to $1.23.
Other blockchain-based ID products out in the space today include Quadrata and IDNTTY.