Domenico; As soon as the use case makes Alice's role that of a "Citizen" a whole raft of non-technical issues arise that should be addressed. How do you implement privacy protection into the architecture to avoid abuse by authoritarian regimes? If I think of all the cases where I'm asked to present government issued ID as proof of identity, and then ask, "Would it be a good thing if there was an permanent audit trail available to the government (any state agency) of all those interactions?" I would restate your problem definition to see if we can design a wide identity ecosystem use case for managing citizen identities that enables (or better, only works if) citizens control their own identities. (PS, see my signature block below, apropos of this issue) John Wunderlich, Sent frum a mobile device, Pleez 4give speling erurz "...a world of near-total surveillance and endless record-keeping is likely to be one with less liberty, less experimentation, and certainly far less joy..." A. Michael Froomkin _____________________________ From: Domenico Catalano <domenico.catalano@oracle.com> Sent: Wednesday, August 3, 2016 4:47 AM Subject: [DG-BSC] Blockstack identity services To: <dg-bsc@kantarainitiative.org> Hi all, maybe, you already know blockstack id technology for identity services, at blockstack.org I think it’s quite useful for investigation and for defining use cases. I was wondering whether we can provide a wide identity ecosystem use case for managing citizen identities. Consider the following high level use case: - The Citizen is identified by a Blockchain-ready Registry. - The Citizen requests to register with the Registry through a specific mobile app, which provides the necessary cryptographic key pairs with which the request is signed.- The Registry includes the request in the blockchain which is distributed among the nodes, as smart contract.- The mobile app and the cryptographic keys are now able to provides strong authentication mechanisms for citizen online access. Citizen Identity can be enriched through the blockchain nodes (special nodes) interactions which provide attribute/profile attestation. I hope it’s useful for further discussions. ThanksDomenico -- This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.