[YoshiRulz]

This sounds suspiciously like Matrix. Does is required buy-in from user agents or will it benefit existing browsers once implemented?

[walterbell]

From https://braid.org/

  Braid is backwards-compatible with today's web, works in today's browsers, and is easy to add to existing web applications.. You can use Braid features in Chrome with the Braid-Chrome extension.

Demo of Statebus+Braid sync on existing browsers: https://stateb.us/#demos