A blockchain-based social insurance (“BBSI”) computer system for creating a social insurance group is provided. The BBSI computer system includes at least one processor in communication with at least one memory device. The processor is programmed to receive social insurance group data and define at least one qualifying rule for joining the social insurance group. Each member of the social insurance group must satisfy the at least one qualifying rule to become a member of the social insurance group. The processor is programmed to generate at least one social insurance group blockchain including the qualifying rule and cause to be displayed on a user device the social insurance group data for review by a candidate member. The processor is also programmed to receive a registration message from the candidate member including a request to become a member of the group.