Even if you get 8.6% yearly on your Bitcoin or any crypto, JUST REMEMBER:
Volatility of these crypto assets is HUGE. 8.6% can be a daily jump in one direction. So most of all you should think what you buy first and not about getting interest.
Secondly, 8.6% is NOT MUCH to risk keeping your crypto on some shady website. NOT WORTH RISKING THE VALUE OF THE CRYPTO. ONLY use the BIG ones. EG. Bitfinex offers marging funding with rate of 0.0063% daily on Bitcoin (2.3% yearly returns?)
NEXO is the only one I have used, but they only support EUR and stablecoins. Not crypto at the moment, but they do advertise that in the future crypto is supported. Still I would consider twice. Not your keys, not your crypto.