A system and method for gathering and communicating at least one related data that is cryptographically verifiable and authenticated to use in at least one reconstruction is described. One example includes V2X device encryption provisioning; operating vehicle V2X communications; and storing all V2X data in memory. If at least one occurs: send a final request for data logs from any other V2X in the vicinity. Ensure logs are sent using signed & encrypted protocol. Record black box data; combine stored V2X data with black box data & storing to a file. Apply cryptographic protections to the file; up / down load the file from each vehicle. Recreate the at least one in 3D w/ simulation software. In embodiments, reconstruction comprises fault determination.