A system comprising: a trusted contextual content device that includes one or more sensors and is configured to: access first sensor data from the one or more sensors, receive a first trusted contextual content that includes a first digital signature, the first trusted contextual content comprising second sensor data, determine a corroboration score by comparing the first sensor data with the second sensor data, generate a data structure including the first trusted contextual content and data based on the first sensor data, wherein the data based on the first sensor data includes the corroboration score, and sign the data structure using a signing key to generate a second trusted contextual content including a second digital signature; an authentication device that is configured to receive the second trusted contextual content and authenticate the trusted contextual content based on the digital signature; and a contextual content consumer device that is configured to receive the second trusted contextual content and transmit a request to authenticate the second trusted contextual content to the authentication device via a network , and, responsive to an authentication message received from the authentication device via the network , present sensor data of the second trusted contextual content in a user interface. a trusted contextual content device that includes one or more sensors and is configured to: access first sensor data from the one or more sensors, receive a first trusted contextual content that includes a first digital signature, the first trusted contextual content comprising second sensor data, determine a corroboration score by comparing the first sensor data with the second sensor data, generate a data structure including the first trusted contextual content and data based on the first sensor data, wherein the data based on the first sensor data includes the corroboration score, and sign the data structure using a signing key to generate a second trusted contextual content including a second digital signature; access first sensor data from the one or more sensors, receive a first trusted contextual content that includes a first digital signature, the first trusted contextual content comprising second sensor data, determine a corroboration score by comparing the first sensor data with the second sensor data, generate a data structure including the first trusted contextual content and data based on the first sensor data, wherein the data based on the first sensor data includes the corroboration score, and sign the data structure using a signing key to generate a second trusted contextual content including a second digital signature; an authentication device that is configured to receive the second trusted contextual content and authenticate the trusted contextual content based on the digital signature; and a contextual content consumer device that is configured to receive the second trusted contextual content and transmit a request to authenticate the second trusted contextual content to the authentication device via a network , and, responsive to an authentication message received from the authentication device via the network , present sensor data of the second trusted contextual content in a user interface. <EOS>