Linux is probably a fair comparison in some ways since it's used in industrial systems, but not so much in others because it's constantly supporting new hardware. Bitcoin has no such need to respond to new hardware, or web standards in the context of frameworks.

The linux kernel gets a major several times a year, like Bitcoin, but businesses don't run the kernel... they run things like LTS or Enterprise distributions that only get majors every few years. 

justin_shocknet

For `29.1`, not-fancy, format `count year-of-commit`, `src/*.cpp` only

```
% find src -name "*.cpp" -print \
   | xargs -n 1 git blame \
   |  sed 's/.* \([0-9]\{4\}\)-[-0-9]*.*/\1/' \
   | sort -n | uniq -c
  166 2009
  247 2010
 3382 2011
 3433 2012
 4558 2013
 9181 2014
 7356 2015
 9203 2016
13201 2017
11980 2018
16129 2019
23999 2020
30487 2021
27968 2022
26245 2023
24693 2024
 2074 2025
```

optimism

bitcoin

Undeprecate datacarrier PR rationale - @schmidty

Scoresby

> but it's changed more like a fledgling javascript framework because of this disconnected relationship

Is that true? 

I'm aware of code half-life measurements on Linux:

![](https://pbs.twimg.com/media/GYQ7jpoakAECl5w?format=jpg&name=large)

Would be interesting to see where Bitcoin Core falls on that spectrum