Decentralized　identity　(DID)　systems　conforming　to　the　World　Wide　Web　Consortium　(W3C)　Decentralized　Identifiers　(DIDs)　and　Verifiable　Credentials　Data　Model　recommendations　have　recently　attracted　attention　due　to　their　better　autonomy,　interoperability,　and　openness　design.　However,　those　W3C　recommendations　lack　a　design　for　addressing　the　single　point　of　failure　(SPOF)　and　identity　revocation,　which　could　seriously　compromise　the　robustness　and　practicality　of　DID　systems.　To　remedy　these　limitations,　we　propose　FutureDID,　a　DID　system　that　enables　multiple　parties　to　jointly　issue　credentials　and　efficiently　revoke　DID　identities,　providing　a　robust　and　practical　DID　system.　FutureDID　is　designed　with　a　multi-party　credential　issuing　mechanism　based　on　distributed　key　generation　technology,　which　transforms　trust　from　a　single　entity　to　distributed　committees　and　facilitates　authentication　between　issuers,　making　it　more　resistant　to　SPOF.　Moreover,　the　underlying　blockchain　system　is　built　on　a　chameleon　hash　function　to　ensure　tamper-proof　and　enable　efficient　identity　revocation.　We　have　implemented　a　prototype　system　using　FISCO　BCOS　and　conducted　extensive　evaluations　to　demonstrate　the　effectiveness　and　practicality　of　our　system.　Our　evaluations　have　shown　that　FutureDID　provides　a　significant　improvement　in　efficiency,　achieving　at　least　a　60　×　efficiency　improvement　in　identity　revocation　compared　to　state-of-the-art　systems.　©　1968-2012　IEEE.