Binance
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https://binance.zendesk.com/hc/en-us/articles/360042957472-About-Binance-Leveraged-Tokens
https://www.binance.com/en/blog/421499824684900580/Your-Essential-Guide-To-Binance-Leveraged-Tokens
BTCUP is a long Bitcoin token, which generates leveraged gains between 1.5x to 3x, when Bitcoin goes up.
BTCDOWN is a short Bitcoin token, which generates leveraged gains between 1.5x to 3x, when Bitcoin goes down.
Не ERC 20 (вывести/завести нельзя), упоминания о том, какой тип токена нигде не нашел. Скорее всего BNBшный.