HyperLedger Indy

https://www.hyperledger.org/projects/hyperledger-indy

Hyperledger Indy provides tools, libraries, and reusable components for providing digital identities rooted on blockchains or other distributed ledgers so that they are interoperable across administrative domains, applications, and any other silo. Indy is interoperable with other blockchains or can be used standalone powering the decentralization of identity.

Key Characteristics

Privacy * Establish decentralized credential verification and decentralized connections—give the holder more control over their information, with no “phoning home” * Support selective disclosure, so holders only have to share the minimum amount of information * Support Zero-Knowledge Proof (ZKP), so something can be proven (e.g. over the age of majority) without revealing the information it’s based on (e.g. date of birth) Confidential, Ongoing Connections * Enjoy encrypted, decentralized peer-to-peer messaging (using DIDComm) by using confidential, ongoing relationships between parties * Support more than just issuing and presenting credentials: proactively notify holders about revoked credentials, exchange messages, and much more Ease of deployment * Start using ready-to-use agent frameworks in Python, Rust, Go, JavaScript and others * Build on multiple companion projects to get started quickly, such as Aries Mobile Agent React Native (Aries Bifold) for an open-standards smartphone wallet Flexibility * Leverage High-level APIs so you can easily adapt your solution in the future * Support multiple credential types, including Hyperledger AnonCreds and W3C VCs