In the UK, the traditional Billion is 1 Million Millions, and a Trillion is 1 Million Billions.  Generally we have fully transitioned to the simpler American version and not the traditional roman version nowadays, but they are marked when referencing material from the 70/80's which use the old scales.

So, sadly, there are differences and that is a FACT.  Although those are very rare to see nowadays, and you would certainly not expect to see it in any newer technology such as a crypto currency.