btc-embedded
25.1.0
This version was deleted from PyPI around 2025-05-16. Installing fails with:
$ pip3 install btc-embedded==25.1.0
ERROR: Could not find a version that satisfies the requirement btc-embedded==25.1.0

Install through StableBuild
You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \
-i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-05-15/ \
btc-embedded==25.1.0
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)