1. A method comprises: outputting a registration request message that includes requesting access to a local dispersed storage network (DSN) and requesting access to a global DSN, wherein the global DSN includes a plurality of DSNs and the local DSN is one of the plurality of DSNs; receiving a registration response message that includes a global universal unique identifier (UUID) and a local UUID; generating a global public-private key pair and a local public-private key pair; generating a global certificate signing request (CSR) based on the global UUID and a private key of the global public-private key pair; generating a local CSR based on the local UUID and a private key of the local public-private key pair; sending the global and local CSRs to a certificate authority (CA); and receiving a signed global certificate and a signed local certificate.