Yes, since 2019 in DeFi and web3

Synthetix

Try from desktop computer or copy and follow the link: distributed.education/defi-course

Awesome! See you on DeFi course!!!

Thank you! Try one the courses!

GE!

I think the world can afford only one Proof of Work blockchain. All other PoW are at high risk of 51% attacks and chain reorgs.