Building Trust with a Contact Tracing Application: A Blockchain Approach. - Tomás Honório; Catarina I. Reis; Marco Oliveira; Marisa Maximiano (IBICA, 2021)

Immunity Passport Ledger - Digital Certificates Implemented on a Permissioned Blockchain. - Marco Oliveira; Tomás Honório; Catarina I. Reis; Marisa Maximiano (IBICA, 2021)