Privado ID (formerly Polygon ID)

Privado ID (formerly Polygon ID) is a self-sovereign digital identity platform built on zero-knowledge proofs (ZKPs) that enables privacy-preserving credential verification without exposing personal information. The platform implements the W3C DID standard and leverages the Iden3 protocol and Circom ZK toolkit for its core functionality.

The platform's key technical features include:

• Blockchain-based identity for decentralized and self-sovereign models
• Zero-knowledge native protocols for user privacy
• On-chain verification capabilities for both off-chain and on-chain credential validation
• Support for W3C Verifiable Credentials
• Integration with any EVM-compatible blockchain

Notable implementations and adoption include partnerships with major organizations like:

• Mastercard for their Artist Accelerator Program
• Reddit for NFT-based community points
• Starbucks for their Web3 loyalty program
• Disney for digital collectibles authentication
• Meta for NFT platform identity verification

The platform consists of three main components:

1. Issuer Node - For organizations to issue verifiable credentials
2. Wallet SDK - For developers to build identity wallets or integrate identity features
3. Verifier SDK - For applications to verify credentials and construct verification queries

Through its focus on privacy-preserving identity verification and broad institutional adoption, Privado ID has established itself as a significant player in the decentralized identity ecosystem, particularly for enterprises looking to implement Web3 identity solutions while maintaining user privacy.