Hayden Adams

Hayden Z. Adams is the inventor of the Uniswap protocol and the founder and chief executive officer of Uniswap Labs, a New York software company. These three roles must be kept distinct: he designed and drove the original protocol; the company continues to develop protocol versions, a wallet, front ends, APIs, and Unichain; and the deployed non-upgradeable protocol contracts and UNI governance are not his personal property, nor can he alone modify them.⁠[1]

Stony Brook University’s 2016 undergraduate research project booklet lists Hayden Adams on the team for the mechanical engineering project “BCIBlock CommunicationsBlock Communications, Inc. (BCI) is a privately held family media holding company headquartered in Toledo, Ohio. Rooted in the newspaper advertising firm Paul Block founded in 1900, it long operated The Blade, the Pittsburgh Post-Gazette, several television stations and the Buckeye Broadband cable and internet business.Open the full entry Use with Patients with Cerebral Palsy.” In later interviews, Adams said he graduated with a degree in mechanical engineering; reliable public sources do not consistently disclose details of his earlier personal life.⁠[2]

After graduating from college, Adams’s first full-time job was a mechanical engineering position at Siemens. In a BanklessBanklessBankless is a crypto media outlet focused on Ethereum and decentralized finance, run by Ryan Sean Adams and David Hoffman; its main products include a newsletter of the same name, a podcast, YouTube shows, and paid membership content. It advocates “going bankless” with crypto tools and has given rise to the community organization Bankless DAO and the early-stage venture fund Bankless Ventures.Open the full entry interview, he described the work as involving computational fluid dynamics, heat flow, and automotive design; this shows he had engineering modeling experience before moving into smart contracts, but his software work had mainly been coursework or small projects in MATLAB, Arduino, and the like, rather than professional web or blockchain development.⁠[3]

Adams gives a precise date in his own account of the history: he was laid off from Siemens on July 6, 2017. He told the news to his college friend Karl Floersch, who was then working on Casper FFG at the Ethereum Foundation and encouraged him to learn smart contracts. This advice was an important trigger for his career change, but Floersch is not a co-founder of Uniswap.⁠[4]

For about two months after losing his job, Adams studied from the basics of Ethereum, Solidity, and JavaScript. He later repeatedly stressed that he had no finance background at the time and only limited smart contract development experience; his career change was not about copying an existing trading system onto the chain, but about combining engineering intuition, public code, and rapid experimentation.⁠[4]

Floersch suggested that he implement the x·y=k on-chain automated market maker that Vitalik Buterin had discussed. The constant-product idea and the problem of on-chain DEXs had been discussed by several researchers before Adams; Adams’s verifiable contribution was integrating a simple market-making curve, shared liquidity, fees, and a usable front end into a protocol that could be publicly deployed and allowed markets to be created without permission. Calling him the inventor of Uniswap does not attribute all of AMM theory to one person.⁠[4]

In October to November 2017, Adams built his first proof of concept: a smart contract with a single liquidity provider and his first website. Compared with EtherDelta at the time, which relied on order books, token listings, and more complex interactions, automatic pricing and a simple swap interface showed him the potential of AMMs for user experience and permissionless markets.⁠[4]

The prototype then added multiple liquidity providers, internal liquidity share tokens, a factory contract, and multi-hop swaps routed through ETH. The core constraint was that the product of the reserves could not decrease after a trade, with a 0.3% fee on inputs going to LPs. In early interviews, Adams said the website, contracts, and unit tests were close to his first complete software engineering project.⁠[5]

Callil Capuozzo redesigned the trading interface and Uciel Vilchis rebuilt the early React front end; Phil Daian provided security advice, the Runtime Verification team completed a formal model and code review, and contractor teams such as Kyokan helped with productization. Noah Zinsmeister, Dan RobinsonDan RobinsonDan Robinson is a general partner and protocol researcher at Paradigm.Open the full entry, Moody Salem, River Keefer, and others later took part in V2, V3, or V4 research. Public materials still consistently describe Adams as the sole founder/inventor.⁠[4]

While Adams was in Seoul for Deconomy, Floersch introduced him to Vitalik Buterin. After reading the contracts, Buterin suggested considering Vyper and applying for an Ethereum Foundation grant; after returning, Adams spent about two weeks rewriting the contracts. Buterin was a source of ideas and advice, not a founder of Uniswap, and he did not gain control of the protocol through his naming suggestion.⁠[4]

The Ethereum Foundation’s Wave III grants announcement listed Uniswap as a DEX framework project receiving $100,000. The funding supported a formal model, code specification, audits, documentation, a white paper, and front-end development. The grantor helped the project reach production, but the Foundation is not the issuer of the protocol and did not become a co-founder as a result.⁠[6]

On the last day of Devcon 4, Adams deployed the contracts to the Ethereum mainnet and launched the website, then announced it to his roughly 200 followers on X/Twitter. At launch, one liquidity provider deposited a combined total of about $30,000 into three token pools, enough to support only swaps on the order of about a hundred dollars; subsequent adoption came from open users, integrators, and LPs, rather than from a centralized matching operation.⁠[4]

Adams originally considered calling the project Unipeg, combining unicorn and pegasus; Vitalik thought Uniswap sounded more natural, and the final name was settled on that basis. This anecdote is recorded in Adams’s own history post and illustrates the early formation of the brand, but a naming suggestion cannot be equated with technical authorship or legal ownership.⁠[4]

V2 launched in May 2020, adding arbitrary ERC-20 pairs, price accumulators, flash swaps, and a protocol fee switch; in September of the same year UNI was released, handing governance, the treasury, and fee parameters to token governance. The V2 white paper is also co-authored by Noah Zinsmeister and Dan Robinson, reflecting that later versions were the product of team and research collaboration.⁠[7]

In 2020, SushiSwap attracted Uniswap LPs through forked code and token incentives, at one point migrating a large amount of liquidity. In a 2021 interview, Adams treated this as a real-world test of how quickly open-source protocols can be copied; Uniswap then continued to compete on the strength of its products, liquidity, brand, governance, and research and development. The fork did not copy the original website’s trademarks or automatically inherit its governance.⁠[3]

V3 let LPs concentrate capital within price ranges of their choosing and introduced multiple fee tiers, significantly changing capital efficiency and position management; each position became a non-fungible NFT. The core code initially used a two-year Business Source License, delaying commercial production forks and sparking debate between “open source” and ecosystem defense; integration interfaces still used GPL/MIT.⁠[8]

Uniswap Labs, led by Adams, acquired the NFT aggregator Genie, integrated NFT trading into its front end, launched a self-custodial wallet, and released UniswapX, which uses a Dutch auction model. The company also announced a $165 million Series B funding round in 2022. All of these were corporate actions of Labs; the Genie announcement explicitly stated that the acquisition did not change the protocol, UNI, or governance.⁠[9]

Adams and several co-authors proposed V4, using hooks to let pools run custom logic before or after initialization, swaps, or liquidity changes, and reducing costs through a singleton design, flash accounting, and native ETH support. V4 launched in January 2025 after nine independent audits, a public security competition, and a bug bounty of up to $15.5 million; the large volume of community contributions shows that his role was that of chief inventor and organizer, not sole code author.⁠[10]

In 2023, in the Risley case, a federal district court dismissed claims seeking to hold Uniswap Labs, Adams, the Foundation, and investors liable under securities law for third-party scam tokens, emphasizing that the smart contracts in question could also be used lawfully. The ruling addressed specific alleged facts and statutory provisions, and does not amount to endorsing any token, relieving the front end of all obligations, or guaranteeing that users will not be defrauded.⁠[11]

In 2024, the CFTCCommodity Futures Trading CommissionThe U.S. Commodity Futures Trading Commission (CFTC) is an independent federal agency created by the Commodity Futures Trading Commission Act of 1974 and operating since 1975 to regulate futures, options and swaps markets; it has treated bitcoin and other virtual currencies as commodities since 2015 and has been chaired since December 22, 2025 by Michael Selig.Open the full entry reached a $175,000 settlement with Uniswap Labs over its front end having offered trading in a small number of leveraged tokens; in February 2025, Labs announced that the SEC had closed its multi-year investigation without taking enforcement action. The former is a formal regulatory order, while the latter comes from an announcement by the party under investigation. Both concern the company and its interface.⁠[12]

The Unichain mainnet opened in February 2025; it is an optimistic rollup built on the OP Stack and designed for DeFi and cross-chain liquidity. Adams is one of the authors of its white paper and incorporated it into the Labs product roadmap. Unichain is a related but separate blockchain product and should not be conflated with the Uniswap AMM protocol itself, which is deployed on Ethereum and multiple other chains.⁠[13]

Adams and the Uniswap Foundation jointly proposed UNIfication: turning on protocol fees, using fees to drive UNI burns, burning 100 million UNI from the treasury, folding some Foundation functions into Labs, and giving Labs a two-year growth budget. After the proposal passed in late 2025, the V2/V3 fee and burn mechanisms were extended to multiple chains; this was an institutional change carried out through UNI governance, not Adams unilaterally collecting LP funds personally.⁠[14]

In August 2026, Adams published a long essay arguing that once assets such as stocks and Treasury bonds move on-chain, AMMs can use trading pairs of correlated assets to reduce inventory and hedging burdens, and can use V4 hooks to customize market structure. He positioned AMMs as passive liquidity infrastructure that could enter the world’s core markets; this is a judgment about the future, not a guarantee of market share already achieved or an investment promise.⁠[15]

Adams’s public work spans mechanism design, product direction, policy debates, and ecosystem narratives. He continues to lead Labs as its founder and CEO, yet often advances the protocol through public white papers, forum proposals, and open-source repositories.⁠[16]

His public account is @haydenzadams, which he often uses to post views on protocols, market structure, and policy.⁠[17]