The W3C is convening the first "Blockchains and the Web" workshop at the MIT Media Lab on June 29+30, 2016.  This workshop will explore issue and options for developing standard approached for interoperability at key interface points for distributed ledgers technologies on the web. For more information, please check out:

The event site: w3.org/2016/04/blockchain-workshop and

The GitHub repository: github.com/w3c/workshops/tree/gh-pages/blockchain​

You can also join one or more of the pre-event weekly Google Hangout starting after Memorial Day weekend to learn more about the specific topics and participate in the discussion. The kick-off Hangout is scheduled for Thursday, June 2nd at 3:00pm Eastern.  Anybody can watch the Hangout video as a live stream during the Hangout or an archive video on YouTube after the Hangout.  To be an be an active online participant in the Google Hangout series and online dialog, Register at: https://law.mit.edu/Blockchain