VoxRT Binary Use License

Copyright (c) 2026 Elephant Enterprises LLC (d/b/a VoxRT).

This license covers the compiled artifacts distributed by the
voxrt-asr-linux project across all language channels:

  - C / C++ tarball:        libvoxrt_asr.so + voxrt_asr.h
                            (GitHub Releases, per-arch tarballs for
                            aarch64 and x86_64)
  - Python:                 voxrt_asr.<abi>.so inside the
                            voxrt-asr PyPI wheel
  - Node.js:                voxrt-asr.<platform>.node inside
                            the @voxrt/asr npm package
  - Go:                     libvoxrt_asr.so bundled with the
                            github.com/VoxRT/voxrt-asr-linux/go
                            module
  - Rust:                   compiled cdylib of the voxrt-asr
                            crate published to crates.io

These binaries are proprietary code owned by Elephant Enterprises LLC.
By using them you agree to the following.

1. PERMITTED USES

   You may use, link against, and redistribute these binaries as an
   unmodified part of the official voxrt-asr-linux distribution at the
   version they were resolved from (the Git tag whose commit produced
   the artefact your build is consuming, via PyPI / npm / Go module /
   crates.io / GitHub Release).

   Redistribution in your own Linux applications — including
   commercial products shipped on x86_64 servers (self-hosted, AWS
   EC2, Hetzner, Google Cloud, Azure, DigitalOcean, containerised
   inside Docker / Kubernetes), on aarch64 edge devices (Raspberry Pi
   4/5, NVIDIA Jetson family, AWS Graviton, Ampere Altra, industrial
   SBCs) — is permitted without per-installation fees, royalties, or
   registration, for the on-device speech-to-text task the binaries
   are built for.

   You may run the binaries on production user devices, on production
   servers, and inside container images.

2. RESTRICTIONS

   You may not:

   (a) Modify, repackage, or relink the binaries outside the unmodified
       official voxrt-asr-linux distribution.

   (b) Reverse engineer, decompile, disassemble, or otherwise attempt
       to derive the source code, the embedded model weights, the
       embedded master key, or other internal state of the binaries.
       This restriction explicitly covers (without limitation) `gdb`,
       `ltrace`, `strace` attachment, debugger-based memory inspection,
       kernel-level tracing such as `eBPF` / `bpftrace` on the
       binary's address space, and any toolchain-level analysis
       (Ghidra, IDA, radare2, BinaryNinja, ...).

   (c) Bypass, defeat, or remove any technical protection mechanism
       used by the binaries, including (without limitation) the
       AES-256-GCM weight encryption (per ADR-0023), the XOR-masked
       master key, the linker version-script symbol restriction, the
       stripped ELF metadata, the anti-`ptrace` self-check, and the
       `.text`-section integrity hash described in ADR-0016.

   (d) Use the binaries to load or decrypt model files (`.vxrt` or
       any other format) that were not published by Elephant
       Enterprises LLC or that you are not authorized to use.

3. NEMO STREAMING-MEDIUM-PC WEIGHTS

   The streaming-medium-pc ASR model weights packaged separately as
   `streaming_medium_pc.vxrt` (distributed via the voxrt-asr-models
   repository) are derived from
   `nvidia/stt_en_fastconformer_hybrid_medium_streaming_80ms_pc` and
   carry the NVIDIA NeMo Creative Commons Attribution 4.0 (CC-BY-4.0)
   license of the upstream weights. See the voxrt-asr-models
   repository for the full attribution + upstream notices. Section
   2 above does not restrict the underlying NeMo weights; it
   restricts only the VoxRT runtime that consumes them.

4. NO WARRANTY

   THE BINARIES ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
   NONINFRINGEMENT. IN NO EVENT SHALL ELEPHANT ENTERPRISES LLC BE
   LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER LIABILITY ARISING FROM
   YOUR USE OF THE BINARIES.

5. COMMERCIAL INTEGRATION

   The default voxrt-asr-linux distribution ships the
   streaming-medium-pc English model as a free preview. Custom
   language models, domain-tuned acoustic models, on-premise
   fine-tuning, and bulk-device deployments are part of the
   commercial VoxRT SDK tier. Contact help@voxrt.com for custom-model
   training, commercial integration support, or licensing terms
   beyond those described above.

6. GOVERNING LAW

   This License is governed by the laws of the State of Delaware,
   United States of America, without regard to its conflict-of-laws
   provisions.

7. ENTIRE AGREEMENT

   This License is the entire agreement between you and Elephant
   Enterprises LLC concerning the binaries. It supersedes any prior
   discussions or oral statements.

Elephant Enterprises LLC may revise this License in future releases.
Pin a specific version of voxrt-asr-linux in your dependency manifest
(requirements.txt, package.json, go.mod, CMakeLists.txt, Cargo.toml)
to keep the License terms you accepted stable across upgrades.
