Request for Comments: Mastering Bitcoin 2nd Edition

I'm requesting feedback and corrections for the second edition of "Mastering Bitcoin". Apologies if this is considered off-topic - it is only my second message to this list in 4 years and I think it is relevant because this book is the first source of information for many new bitcoin developers.

The book is in pre-production and will be published within the next 6-8 weeks. The new edition covers many new topics including segwit, bip9 signalling, timelocks, payment channels & lightning network. In addition, most chapters have seen big changes, clarifications and corrections.

The book is open source (CC-BY-SA) and produced on github ( https://github.com/bitcoinbook/bitcoinbook/tree/develop). Pull requests, issues and comments are welcome, only 2-3 weeks left before it goes into a production freeze.

Many thanks,

Andreas