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Uniswap smart contracts hold liquidity reserves of various tokens, and trades are executed directly against these reserves. Prices are set automatically using the constant product market maker mechanism, which keeps overall reserves in relative equilibrium. Reserves are pooled between a network of liquidity providers who supply the system with tokens in exchange for a proportional share of transaction fees. The Uniswap Exchange is an opensource front-end interface for traders and liquidity providers to easily interact with Uniswap's smart contracts."

"We present Hamilton, a transaction processor for CBDC that provides high throughput, low latency, and fault tolerance, and that minimizes data stored in the transaction processor and provides flexibility for multiple types of programmability and a variety of roles for financial intermediaries. Hamilton does so by decoupling the steps of transaction validation so only the validating layer needs to see the details of a transaction, and by co-designing the transaction format with a simple version of a two-phase-commit protocol, which efficiently applies state updates in parallel. An evaluation shows Hamilton achieves 1.7M transactions per second in a geo-distributed setting."

The mission of the The Linux Foundation's Open Wallet Foundation (OWF), launched in September 2022, is to develop an open source engine to enable secure and interoperable multi-purpose wallets anyone can use to build solutions. The OWF aims to develop open source software, key building blocks, and best practices that anyone can use to build multi-platform, interoperable, secure, and privacy-protecting digital wallets that will support a wide variety of applications from identity credential to payments. The OWF community is currently working on its governance and structure with the goal of launching in early 2023.

"A few months ago, the Linux Foundation (LF) announced its intent to launch the Open Wallet Foundation (OWF) in early 2023. The OWF aims to develop open source software, key building blocks, and best practices that anyone can use to build multi-platform, interoperable, secure, and privacy-protecting digital wallets that will support a wide variety of applications from identity credential to payments. "