OpenStream is the wire format nixamp uses to relay a channel or a file
between two servers: a framed stream of blocks, each compressed with an
established codec or stored verbatim, each carrying the length and SHA-256
of the bytes it stands for, ending in a marker that says the stream
finished rather than dropped. It is a framing envelope, not a compression
algorithm, and it is deliberately product-neutral: nixamp is the reference
implementation, the format carries any byte stream.
The doc gives the byte layout (16-byte stream header, 48-byte frames, both
big-endian), the mode set, the validation order, cross-language test
vectors, the negotiation, the source/channel boundary, recovery semantics,
and a conformance checklist. Published at /docs/openstream via the same
DOC_SLUGS path as every other spec; no README change, matching how
OpenJob/OpenResume (#148) landed.
Claude-Session: https://claude.ai/code/session_01MxNif5tsYq4LczgG7aE8Jp
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>