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Stake DAO is a non-custodial yield aggregator best known for its meta-governance products on Curve, Frax, and other voting-escrow protocols. Users deposit LP tokens and Stake DAO routes them through a pooled veCRV/veFXS position that captures boosted emissions, similar in spirit to Convex.
SDT is the protocol’s governance token; sdToken wrappers (sdCRV, sdFXS, etc.) let holders capture protocol-owned voting power without locking the underlying themselves.