Transfer

Transfer is a separate BitSpeed tool in development. Its intended job is deliberately narrow: move one source file to one destination using verified chunks, record progress and recover from interrupted work. It has no public release or binary download yet.

The development source can prepare a local immutable snapshot, calculate chunk and full-file SHA-256 digests, publish a canonical manifest and revalidate that saved snapshot later. Reuse does not require the original source file. Preparation output explicitly says that a snapshot was prepared and no transfer was performed. This local work currently targets Linux and macOS filesystems with file and directory synchronization.

A finished network transfer needs more than a saved counter. The receiver must substantiate stored chunks after restart, acknowledge only verified synchronized bytes, assemble the file, check its full digest and publish without replacing an existing destination. These guarantees are under development; the site does not present them as a released feature.

The development source, sender snapshot guide and protocol contract show the current boundaries. Windows receiver support remains gated on its own publication and persistence tests. Inspect can be used independently today.