---
tags: cyber
crystal-type: entity
crystal-domain: cyber
---
history of time in machines
several decades ago the new machine time system has been born: [unix time](https://en.wikipedia.org/wiki/Unix_time)
the first second started at 1 jan 1970 of the old time
since when it is the only format in which computers account time
satoshi learns how to prove unix time more than a decade ago
in aos we count time from the moment of 0 second of unix time
time after this moment is called: machine time or mt
any previous time is marked with minus and is called: before machines or bm
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