LEDGIS is a user-centered blockchain service which materializes Self Sovereign Identity(SSI) by preventing IT platforms from monopolizing user data. With its sophisticated token economy, users can receive rewards according to their contribution to the ecosystem and experience various DApp services at a high speed of 3,000 TPS. In addition, its DID(Decentralized IDentity) is recognized as a global standard, and an efficient private key management service along with decentralized data encryption storage/sharing system ensure individual data sovereignty and safe storage of sensitive user information. In recognition of above advantages, LEDGIS is providing its blockchain services to various government agencies in Korea.