Batin .mdf (Motion Document Format)

An open document format, with a reference implementation in Rust, that puts a whole document (text, media, declared interaction, and a built-in accessibility structure) in one portable file that works fully offline and sends nothing to any server. Every file can be integrity-checked with SHA-256, digitally signed with Ed25519, and encrypted with AES-256-GCM, so a recipient can verify it is authentic and unaltered without a cloud, an account, or an internet connection. Interactivity is declared as data; the file runs no script. The same tagged structure serves both screen readers and machine or AI extraction. The project publishes a versioned specification, a conformance test suite, and a canonical JSON Schema so anyone can build a compatible, verifiable reader.