Uniswap v2 Core
Uniswap v2 CoreHayden 2020AbstractThis technical whitepaper explains some of the design decisions behind the Uniswapv2 core contracts. It covers the contracts new features including arbitrary pairsbetween ERC20s, a hardened price oracle that allows other contracts to estimate thetime-weighted average price over a given interval, flash swaps that allow traders toreceive assets and use them elsewhere before paying for them later in the transaction,and a protocol fee that can be turned on in the future. It also re-architects the contractsto reduce their attack surface.
Uniswap v1 is an on-chain system of smart contracts on the Ethereum blockchain, imple-menting an automated liquidity protocol based on a \constant product formula" [1]. Each Uniswap v1 pair stores pooled reserves of two assets, and provides liquidity for those two assets, maintaining the invariant that the product of the reserves cannot decrease.
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