Hyperledger Foundation’s IP policy is set forth in the Hyperledger Foundation charter, section 12.
Hyperledger Foundation project dependencies that are licensed under Apache-2.0 do not require further license review or approval, since they are under the same license as the Hyperledger Foundation itself.
The IP policy in the Hyperledger Foundation charter allows the Hyperledger Foundation Governing Board to review and approve other non-Apache-2.0 licenses on an exception basis.
To streamline this process, licenses for some components are allowed as per the Hyperledger Foundation Allowlist License Policy (adopted by the Hyperledger Foundation Governing Board on 2019-04-02).
Components that are not under Apache-2.0, and that do not satisfy the Allowlist License Policy, remain subject to review and exception approval by the Governing Board.
A third-party component under a non-Apache 2.0 license will be deemed automatically approved by the Governing Board for use in a Hyperledger Foundation project as an exception to the Hyperledger Foundation Intellectual Property Policy, if all of the following apply:
it is fully licensable under the approved licenses set forth in Approved Licenses (including combinations with Apache-2.0); AND
it is either not stored in the Hyperledger repo, or else stored unmodified in a designated third-party folder in source code form; AND
it has indications of substantial use outside Hyperledger because either:
- the component is part of the applicable programming language’s standard library; or
- the component was created on GitHub at least 12 months ago and has at least 10 stars or 10 forks.
To be approved as “allowlisted,” a third-party component must be fully licenseable under one or more of the following licenses, and must meet the other allowlist criteria set forth in the Allowlist License Policy above.
License IDs refer to the SPDX License List at https://spdx.org/licenses, except where a URL is specified below for licenses that are not on the SPDX License List.
- BSL-1.0 (Boost)
- OLDAP-2.7, -2.8 (Open LDAP)
- TCL (TCL/TK)
- Google patent license for Golang (https://golang.org/PATENTS)
- References to being in the “public domain” (excluding CC0-1.0)
For fonts: OFL-1.0, OFL-1.1
For documentation: CC-BY-1.0, CC-BY-2.0, CC-BY-2.5, CC-BY-3.0