ProofMode is a system that enables authentication and verification of multimedia content, particularly captured on a smartphone, from point of capture at the source to viewing by a recipient. It utilizes enhanced sensor-driven metadata, hardware fingerprinting, cryptographic signing, and third-party notaries to enable a pseudonymous, decentralized approach to the need for chain-of-custody and “proof” by both activists and everyday people alike.

The ProofCheck dApp is a statically deployed progressive web app that incorporates WASM-powered Rust code and other JS libraries to act as a decentralized verifier of signatures, timestamps, metadata and more in ProofMode bundles, photos, videos, audio and more. The dApp can also retreive media stored on IPFS and Filecoin networks.