Question: I'm looking for a way to prove the integrity of online data, such as bank balances or ride-sharing history, without compromising user privacy.

The Reclaim Protocol offers a digital identity verification system that uses zero-knowledge proof digital signatures to establish a user's identity and reputation based on their online activity. It provides cryptographic proof of data integrity and can be used for identity verification, onboarding, and loyalty programs. This platform is maintained by a development team and allows users to run their own instances or pay for managed services.

Another notable platform is Proof, which provides a trusted and legally binding solution for digital transactions. It includes identity verification, online notarization, and fraud prevention tools, making it suitable for industries where trust and security are paramount. The platform combines auditable verification with cryptographic proof to ensure secure execution of agreements.

For a more streamlined approach, Dock offers reusable digital ID credentials derived from verified ID data, enabling instant verification and monetization. It features zero-knowledge proofs for data privacy compliance and compatibility with multiple digital wallets and verification systems. This makes it a valuable tool for businesses looking to speed up customer onboarding and simplify digital identity management.

Lastly, DataTrails provides a provenance API platform that ensures the authenticity and integrity of digital content through transparent and tamper-evident audit trails. It focuses on responsible AI, media authenticity, and supply chain oversight, offering benefits like immutable audit trails and verifiable provenance. This platform is ideal for ensuring the integrity of digital data in various contexts.