Every Felix export carries a SHA-256 integrity manifest and its complete double-entry journal. This page verifies one entirely in your browser — the file is never uploaded.
Three independent checks: the bundle re-hashes to its own fingerprint, the journal re-posts through the double-entry engine, and Schedule C re-derives from the raw entries to the cent (the §0.1 law, demonstrated rather than claimed).
Why it exists: bookkeeping services have vanished with their customers' books before. A Felix export is complete, portable, and self-proving — your accountant can verify it without trusting us.