Polygon launches web3 identification service using zero-knowledge proofs

Quick Take

  • Polygon released a web3 identification service that can authenticate user credentials without revealing personal data.
  • The team said that its ID solution will be useful for blockchain-related Know Your Customer checks.
Polygon, the Ethereum sidechain, released a web3 identification service called Polygon ID that will allow blockchain-based applications to authenticate user credentials without compromising personal information.
Polygon-based crypto and NFT projects such as Kaleido, Fractal and Collab.Land, have already shown support for Polygon ID, which is accompanied with a developer toolkit. The offering can verify user data for blockchain apps while maintaining privacy on-chain; it uses zero-knowledge proofs, which can authenticate data while keeping it encrypted and hidden from the verifying party. 
Polygon ID could be beneficial in compliance use cases such as the "Know Your Client" process required for centralized exchanges, permissioned DeFi platforms, as well as fiat payments for on-ramp and off-ramp. It works alongside Polygon's wallet.

Keep up with the latest news, trends, charts and views on crypto and DeFi with a new biweekly newsletter from The Block's Frank Chaparro

By signing-up you agree to our Terms of Service and Privacy Policy
By signing-up you agree to our Terms of Service and Privacy Policy
"Polygon ID enables compliance for both web2 and web3 industries which strengthens the regulatory framework through KYC/AML checks. The reusability and self sovereignty of credentials also reduces the cost, time and complexity of user onboarding and user verification," a project spokesperson said in a statement.
Polygon Labs' core developers have integrated this identity toolkit technology into Polygon zkEVM, which is expected to launch later this month.

© 2023 The Block. All Rights Reserved. This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.

About Author

Vishal Chawla is The Block’s crypto ecosystems editor and has spent over six years covering tech protocols, cybersecurity, artificial intelligence and cloud computing. Vishal likes to delve deep into blockchain intricacies to ensure readers are well-informed about the continuously evolving crypto landscape. He is also a staunch advocate for rigorous security practices in the space. Before joining The Block, Vishal held positions at IDG ComputerWorld, CIO, and Crypto Briefing. He can be reached on Twitter at @vishal4c and via email at [email protected]


To contact the editors of this story:
Nathan Crooks at
[email protected]
Andrew Rummer at
[email protected]