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bip3: Editorial changes in "BIP Licensing"

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Tim Ruffing 2025-07-09 09:37:58 +02:00
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bip-0003.md
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@ -397,17 +397,17 @@ For example, a preamble might include the following License header:
License: CC0-1.0 OR FSFAP
In this case, the BIP text is made available under the terms of both Creative Commons CC0 1.0 Universal as well as the
FSF All Permissive License, and anyone may modify and redistribute the text provided they comply with the terms of
*either* license. In other words, the license list is an "OR choice", not an "AND also" requirement. See the [SPDX
In this case, the BIP (including all auxiliary files) is made available under the terms of both Creative Commons CC0 1.0 Universal as well as the
FSF All Permissive License, and anyone may modify and redistribute it provided they comply with the terms of
*either* license, at their option. In other words, the license list is an "OR choice", not an "AND also" requirement. See the [SPDX
documentation](https://spdx.dev/ids/) and the [SPDX License List](https://spdx.org/licenses/) for further details.
It is also possible to license source code differently from the BIP text by including the optional License-Code header
It is also possible to specify that source code is licensed differently by including the optional License-Code header
after the License header. Again, the licensing terms must be specified using an SPDX License Expression.
Each source code file or source directory should specify the license under which it is made available as is common in
Each auxiliary source code file or source directory should specify the license under which it is made available as is common in
software (e.g., with a [`SPDX-License-Identifier: <SPDX License Expression>` comment](https://spdx.dev/ids/),
with a license header or a LICENSE/COPYING file). It is recommended to make any test vectors available
a license header, or a LICENSE/COPYING file). It is recommended to make any test vectors available
under CC0-1.0 or FSFAP in addition to any other licenses to allow anyone to copy test vectors into their
implementations without introducing license hindrances. Licenses listed in the License-Code header apply to all source directories,
source code files, and test vectors provided with the BIP except those where a LICENSE file in a directory
@ -418,20 +418,20 @@ For example, a preamble specifying the optional License-Code header might look l
License: CC0-1.0
License-Code: MIT
In this case, the code in the BIP is not available under CC0-1.0, but is only available under the terms of the MIT
In this case, the source code in the BIP is not available under Creative Commons CC0 1.0 Universal, but is only available under the MIT
License.
It is recommended that BIPs that include literal code be licensed under the same license terms as the project it
modifies. For example, literal code intended for Bitcoin Core would ideally be licensed (or dual-licensed) under the MIT
license terms.
It is recommended that source code included in a BIP (whether within the text or in auxiliary files) be licensed under the same license terms as the project it
is proposed to modify, if any. For example, changes intended for Bitcoin Core would ideally be licensed (also) under the MIT
License.
In all cases, details of the licensing terms must be provided in the Copyright section of the BIP.
#### Acceptable Licenses[^licenses]
Each new BIP must be made available under at least one acceptable license as listed below. BIPs are not required to be
*exclusively* licensed under approved terms, and may also be licensed under unacceptable licenses *in addition to* at
least one acceptable license.
*exclusively* licensed under approved terms, and may also be licensed under other licenses *in addition to* at least one
acceptable license.
In other words, a new BIP must specify an SPDX License Expression that is either "L" or equivalent to "L OR E" for some
acceptable license L from the following list and another SPDX License Expression E.
@ -448,7 +448,7 @@ acceptable license L from the following list and another SPDX License Expression
#### Not Acceptable Licenses
All licenses not explicitly included in the above lists are not acceptable terms for a Bitcoin Improvement Proposal.
However, BIPs predating this proposal were allowed under other terms, and should use these identifiers:
However, BIPs predating this proposal were accepted under other terms, and should use one the following identifiers.
* LicenseRef-PD: Placed into the public domain
* OPUBL-1.0: [Open Publication License, version 1.0](http://opencontent.org/openpub/)