NOTICE

Capsule — Capsule Protocol Specification (CPS) Reference Implementation
Copyright 2026 Quantum Pipes Technologies, LLC

This product includes software developed at
Quantum Pipes Technologies, LLC (https://quantumpipes.com/).

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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PATENT NOTICE

This software is covered by one or more pending patent applications
and an additional patent grant. See the PATENTS.md file for details.

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THIRD-PARTY NOTICES

This software uses the following open-source libraries:

- PyNaCl (Apache 2.0) - Ed25519 cryptographic signatures
- liboqs-python (MIT) - Post-quantum cryptographic signatures (optional)
- SQLAlchemy (MIT) - Database toolkit (optional, with [storage] or [postgres])
- aiosqlite (MIT) - Async SQLite driver (optional, with [storage])
- asyncpg (Apache 2.0) - Async PostgreSQL driver (optional, with [postgres])