The leading Ethereum AMM. v2 popularized constant-product pools. v3 added concentrated liquidity. v4 adds hooks.

A version of the Uniswap automated market maker architecture built around a shared pool manager and optional hooks that customize pool behavior.

Pricing goods in an asset. Almost no economy prices in BTC; mostly USD and local fiat.

A token allowance large enough to let a designated spender move present and potentially future balances without asking for another allowance each time.

India's Unified Payments Interface, a public instant-payment rail used at national scale.

A dollar stablecoin issued by Circle, widely used in DeFi and by U.S.-facing platforms.

An unspent transaction output. Bitcoin-style ledgers track coins as discrete outputs rather than account balances.