USDT on bsc not listed on tether's site.

Am researching how tether works.

On tether's site it doesn't list binance chain as supported. Nor does it list any usdt on tether. However I see usdt on binance chain.

What am I missing?

updates, thanks for giving me some info on things to look into here is what my understanding at this time which may or may not be correct is:

USDT on binance isn't really USDT. The name of the coin implies it is pegged, not wrapped: Binance-Peg BSC-USD (BSC-USD). This is very confusing as many exchanges list it as USDT..

https://www.bscscan.com/token/0x55d398326f99059ff775485246999027b3197955?a=0x55d398326f99059ff775485246999027b3197955 at the time of writing this it shows total supply of 4,979,997,922.

I have contacted support to ask where they keep the reserve or if that information is public. I am assuming it is. As far as I can tell binance offers this bridge product https://www.binance.com/en/blog/ecosystem/introducing-binance-bridge-20-421499824684903626

When searching around for their reserve wallet I did find: https://bitinfocharts.com/bitcoin/wallet/Binance-BTCB-Reserve but this is for their BTCB.

https://bscscan.com/token/0x7130d2a12b9bcbfae4f2634d864a1ee1ce3ead9c?a=0x7130d2a12b9bcbfae4f2634d864a1ee1ce3ead9c

Which shows they have 10k more btc in reserve then issued on bsc as btcb.