Below is a list of relevant smart contracts and Github repositories for using and interacting with the Yearn product suite.
The Yearn ecosystem is controlled by YFI token holders who submit and vote on proposals that govern the ecosystem.
YFI can be transformed into WOOFY through Woofy Finance. It is effectively the same thing as YFI with a smaller denomination. The rate is 1 YFI = 1,000,000 WOOFY.
The Vault Registry is the single source of truth for active Yearn vaults. The registry allows users to query for active Yearn vaults and vault metadata. For info on yield tokens, vault contracts, strategy contracts, and vault statuses or info, check the v2.registry.ychad.eth contract.