Summary
The COPYING file dates “The Bitcoin Core developers” from 2009, but that project name didn’t exist until the v0.9.0 rebrand in March 2014.
This change reflects historical naming, not contributor scope — early contributors’ work is fully covered under “Bitcoin Developers.”
Evidence from git history
| Commit | Date | Author | Copyright Notice |
|---|---|---|---|
e071a3f6c06f |
2009-08-30 | sirius-m | Copyright (c) 2009 Satoshi Nakamoto |
98500d70a8cf |
2010-02-12 | s_nakamoto | Copyright (c) 2009-2010 Satoshi Nakamoto |
fc73ad644f0b |
2010-12-13 | s_nakamoto | Copyright (c) 2009-2010 Bitcoin Developers |
3b00e7c23164 |
2015-04-22 | sandakersmann | Copyright (c) 2009-2015 The Bitcoin Core developers |
d552ed678c26 |
2017-09-13 | Paul Berg (committed by gmaxwell) | Restored Bitcoin Developers as 2nd line |
Key points:
- Satoshi replaced his own name with “Bitcoin Developers” in his final v0.3.19
release (Dec 2010,
fc73ad644f0b) - The project was known as “Bitcoin” with “Bitcoin Developers” until the v0.9.0 rebrand to “Bitcoin Core” (March 2014; see #3203, #3408)
- In 2015,
3b00e7c23164replaced “Bitcoin Developers” with “The Bitcoin Core developers” and backdated it to 2009 - #11318 (gmaxwell, 2017) partially addressed this by restoring “Bitcoin
Developers” as a second line — sipa identified
3b00e7cas having introduced the naming error. However, the start date was not corrected
Current state
0Copyright (c) 2009-2026 The Bitcoin Core developers
1Copyright (c) 2009-2026 Bitcoin Developers
Proposed fix
0Copyright (c) 2014-2026 The Bitcoin Core developers
1Copyright (c) 2009-2026 Bitcoin Developers
The only change is 2009 → 2014 on the first line, correcting it to reflect
when the “Bitcoin Core” name came into use. Line order is unchanged.
This is a single-number fix consistent with the project’s preference for accurate copyright notices, as demonstrated by #11318. No change to the license text itself.