YFI is the governance token of Yearn Finance's yield aggregation platform. The protocol was launched at the end of July, 2020 and attracted a huge number of investors looking for lucrative revenue opportunities in the booming DeFi sector. Yearn. Finance is a protocol that allows using decentralized financial services, such as lending, interest earning, trade. Immediately after the launch, the project caused a huge stir, and due to fair distribution, YFI became the most expensive altcoin, surpassing the price of Bitcoin. YFI is an ERC-20 token which is used to control protocols within the Yearn Finance Defi platform.