NOTICE

First Principle Codex OS (FPCOS)
An anti-hallucination cognitive base layer for AI reasoning skills.

Copyright 2024-2026 Bunyawat Dechanon (ElmatadorZ)

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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Attribution
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Skills and systems that inherit FPCOS are asked (not required) to retain:

    Built on FPCOS by Bunyawat Dechanon (ElmatadorZ)

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Naming and the non-removable layers
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The Apache License grants broad rights to use, modify, and redistribute this work,
including commercially. It does NOT grant rights to the project's names or marks
(Apache-2.0 Section 6, "Trademarks").

FPCOS defines four layers that a conformant inheriting skill may not remove:

    L0  Reality Anchor
    L1  Axiom Gate
    L4  Shadow Gate  (non-skippable self-critique)
    L5  Synthesis

A derivative that removes any of L0, L1, L4, or L5 MUST NOT be presented as
"First Principle Codex OS" or "FPCOS", and MUST NOT imply endorsement by the
author. Those layers are what the OS is; a version without them is a different
thing wearing the name.

This is a naming and accuracy requirement, not a restriction on use. The software
freedoms granted by the Apache License are not conditioned on it.

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History
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Earlier releases were distributed under the "Open Cognitive License v1.0", a
custom licence carrying a 2% gross-revenue clause above $10M USD/year. From this
release forward the project is licensed under Apache-2.0 to remove adoption
friction for organizations whose review processes require an OSI-approved licence.
The prior licence text remains available in the git history.