First measurement service applied to event dating for reliable business transactions: metrology for digital transformation using Colombian legal time.
Diffusing the legal time in Colombia is one missional assessment of INM (National Metrology Institute of Colombia). This is done via a public IP through an NTP server (Network Time Protocol Server) disciplined to the National Standard of Time and Frequency. So, the companies can synchronize their servers, but they do not have certainty about the difference that exists between the time of the client-server and the legal time of the INM server because there is not a constant verification implemented by themselves. In Colombia, the demand for the legal time service has increased because it is used by many companies due to the rise of innovative applications such as time-stamp, digital signature, electronic invoice, and economic transactions. This has an impact on the economic environment of a country for world trade. For this reason, the INM of Colombia implemented a new service to measure the synchronization offset with the legal time, which allows the companies to have a new service that generates reliability respecting the time they use to provide their services. Inspired by the INM contribution to the international comparison Universal Time Coordinated (UTC) and the intercomparison of the National Standards of Time and Frequency implemented through the SIM time scale (SIMT) using GPS (Global Positioning System), the INM developed a customized application for national comparison using NTP. As a result, this is the first remote measurement service as evidence of metrology for digital transformation in Colombia in the field of time and frequency.