I've felt for a while that a standard, widely-implemented, distributed content-addressable store is one of the biggest missing pieces of the modern internet. Glad to see any steps in that direction.

I'll know real progress has been made when my browser can resolve something like:

cas://sha256/2d66257e9d2cda5c08e850a947caacbc0177411f379f986dd9a8abc653ce5a8e