PT Billion Jaya Group (BIShare)

An independent review of the cryptographic protocol and the on-device receiver, a published threat model, a fuzzing harness for the Rust protocol parser and the receiver's HTTP endpoints running in CI, and the time to fix what they find. Every security issue so far was found by the author reviewing his own code; this pays for someone else to look.

Keeps the sole maintainer working on BIShare for twelve months: releases on five platforms, the protocol crate, the web client, translations in thirteen languages, and answering users. Today this is done unpaid alongside other work.

What it costs to keep BIShare online and in the stores for a year: Cloudflare Workers, D1 and R2 for the relay and website, the Apple and Microsoft developer accounts, and the domain.

A one-time contribution of any size towards the work above.