The mentioned project are not the same although they go by the name BitcoinX but there ticker are different. I was also confuse either but when u checked the concept (BCX concesus was POW → DPOS while BTCX was POW/POS) and the total supply I finally know they are not the same project.
Maybe they change something after rebranding like as you mention above.
Check this another thread from here
https://bitcointalk.org/index.php?topic=4500409.0Coinmarketcap redirects me to this thread.
It seems that coingecko redirects me to a wrong forum thread.
The link from this
BTCX is the same as this
BCX but they are different specs.
So I think @OP you should clarify which coin you are talking about the coin from Chinese one or the English one?
The one coin is listed on
https://www.southxchange.com/