So I was on 8 chan /b/ yesterday and apparently there is currently an ongoing effort to make CP legal.
Someone made a program that allows you to upload any file that is less than around 70 kB to the bitcoin blockchain.
The plan seems to be that someone uploads hardcore CP to the bitcoin network. This is then supposed to force an decision of one of the two options, to simply ban all blockchains or to permit CP if it's in the blockchain.
The first would then likely result in an public outcry, because bitcoin has gotten quite popular nowadays and the second one would pave the way to expand on that exception to not only apply to the blockchain.
Pretty much the only things I found about this are these two threads:
/tech/res/885873.html
/b/res/7950368.html
that the origin of this seems to be some darknet imageboard called millchan and that the source code of the program is also hosted on that darknet(zeronet is what it's called).
There are also clearweb mirrors of the source code on github and gitgud
Just a coincidence that all the big banks have invested in crypto & now putting this out there