Simplicity: A New Language for Blockchains [pdf]
What I love about all this is that it is almost entirely developed by the community, without any central authority preventing it from going in any particular direction. (There might be powerful players incentivizing certain branches, but that has limited effect for a thing like this.) So despite what critics say (and I admit to agreeing with them on some points), it just feels like this whole thing has such a momentum and enthusiasm behind it that <i>something</i> really cool will come out of it within 5-10 years, no matter what problems people point out about it at the moment.