It is possible to edit posts?
I saw a edit option. But it disappeared after a while.

Okay. Please use the markdown quote to indicate it’s a quote and no original content like this 

In markdown this:
‘> this is a quote’

Will get rendered like this:
> this is a quote

k00b

That is the summary in beginning of the newsletter.
I copy and paste as a small preview of the content. Instead of just posting the link and the title.

clyde_nakamoto

bitcoin

Bitcoin Optech Newsletter #208

> Also included are our regular sections

Did you write this or copy it?