NOTICE — Vendored OKF sample bundles
====================================

The bundle directories in this folder (crypto_bitcoin/, ga4/) are vendored,
unmodified, from the upstream Open Knowledge Format (OKF) reference
implementation:

  Upstream repository: https://github.com/GoogleCloudPlatform/knowledge-catalog
  Upstream paths:      okf/bundles/crypto_bitcoin/  ->  crypto_bitcoin/
                       okf/bundles/ga4/             ->  ga4/
  Pinned commit:       ee67a5ca27044ebe7c38385f5b6cffc2305a9c1a
  Date fetched:        2026-07-08

All vendored files are byte-exact copies of the git blobs at the pinned
commit (verified against the upstream tree object's blob SHAs).

License
-------
The upstream project is licensed under the Apache License, Version 2.0.
This was verified against both LICENSE.md (repository root) and
okf/LICENSE.md at the pinned commit ee67a5ca27044ebe7c38385f5b6cffc2305a9c1a.

The upstream LICENSE.md retains the standard Apache-2.0 appendix
boilerplate ("Copyright [yyyy] [name of copyright owner]") without a
filled-in copyright line; the repository is published under the
GoogleCloudPlatform GitHub organization.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use these files 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.

Vendored bundles
----------------
  crypto_bitcoin/  (9 files)  — BigQuery public dataset: crypto_bitcoin
  ga4/             (18 files) — BigQuery public dataset:
                                ga4_obfuscated_sample_ecommerce
                                (GA4 Merchandise Store sample)

Excluded bundle
---------------
The upstream stackoverflow bundle (okf/bundles/stackoverflow/) was
deliberately NOT vendored. A license scan on 2026-07-08 found that several
of its references/*.md files reproduce, near-verbatim, enumeration text
from the community-authored answer at
https://meta.stackexchange.com/questions/2677 ("Database schema
documentation for the public data dump and SEDE"), which is user
contributed Stack Exchange content licensed under CC BY-SA — a license
incompatible with plain Apache-2.0 redistribution without additional
attribution obligations. See README.md in this directory for details.
