Internet-of-Things is constantly expanding and one of the most relevant challenge is to secure the communications that involve these particular devices. Public Key Infrastructure (PKI) mechanisms are not well suited for IoT devices, and many new solutions to this problem leverage on the Blockchain technology for moving the "trust-anchor" from centralized root Certification Authorities (CAs) to a public distributed ledger. Starting from one of these solutions (proposed in a 2018's paper by Elisa Bertino, Ankush Singla, Jongho Won and Greg Bollella) based on a Blockchain project called Emercoin NVS, the purpose of this work is to propose an implementation that extends the original design using the TPM 2.0 technology for the identification of the IoT devices.