Arthur Breitman co-founded Tezos, the blockchain behind a $232 million ICO that ranked among the many largest crypto fundraises of 2017. A former quantitative analyst at Goldman Sachs and Morgan Stanley, he wrote the unique Tezos proposal below the pseudonym L.M. Goodman earlier than constructing the community along with his spouse and co-founder, Kathleen Breitman.
Almost a decade later, he stays Tezos’ CTO, nonetheless fielding blunt questions in regards to the token’s fall from a top-10 cryptocurrency to nicely outdoors the highest 80. No named monetary publication has confirmed what that’s value to him personally.
Who Is Arthur Breitman?
CryptoSlate describes Breitman as French-born. He studied utilized arithmetic and pc science at France’s École Polytechnique, then went to NYU’s Courant Institute for graduate research. He labored as a quantitative analyst at Goldman Sachs, then as a vice chairman at Morgan Stanley, a background that CryptoSlate ties to Tezos’ concentrate on protocol correctness, and later as a analysis engineer at Google X and Waymo.
In 2014, whereas nonetheless at Morgan Stanley, he revealed a whitepaper proposing a blockchain that would improve its personal guidelines via on-chain voting, below the pseudonym L.M. Goodman, Cointelegraph reported. That paper grew to become Tezos, the undertaking that put Breitman among the many founders profiled on our crypto personalities web page.
Arthur Breitman’s Profession and Contributions
Breitman and Kathleen Breitman based Dynamic Ledger Options in 2015 to construct the protocol. In July 2017, the Tezos Basis raised $232 million in below two weeks, one of many largest ICOs of the period, per CoinDesk.
The celebration didn’t final. A combat between the Breitmans and Johann Gevers, then Tezos Basis president, over the raised funds delayed the launch and resulted in class-action lawsuits alleging the token sale was an unregistered securities providing. Reuters reported that FINRA fined Breitman $20,000 in 2018 and barred him from broker-dealer exercise for 2 years over Tezos’ undisclosed enterprise at Morgan Stanley.
Gevers resigned, and Tezos launched its mainnet that September. In 2020, the Basis paid $25 million to settle the category motion with out a courtroom ruling on whether or not the ICO was an unregistered securities sale, CoinDesk reported.
Arthur Breitman’s Views and Positions
Breitman argues that Bitcoin’s largest vulnerability isn’t cryptographic. It’s social. In an interview with Cointelegraph at EthCC 2026 about quantum computing’s risk to Bitcoin’s key encryption, Breitman mentioned immediately: “The coding work could possibly be completed this afternoon.” The more durable drawback, he informed Cointelegraph, is convincing thousands and thousands of holders emigrate their keys.
That skepticism carries into his learn on crypto markets typically. Breitman described Bitcoin as a momentum asset that attracts patrons throughout rallies and will get offered off as soon as uncertainty units in, citing the 2020 COVID crash, and warned that public firms stockpiling Bitcoin on unsustainable inventory premiums face comparable threat.
Arthur Breitman within the Information
In April 2026, Breitman’s Cointelegraph interview at EthCC on Bitcoin’s quantum computing readiness bolstered his standing as an out of doors commentator on Bitcoin, not simply Tezos. The remarks got here with no decision or deadline hooked up, reflecting a broader shift in his current commentary towards dangers dealing with crypto markets typically.
Steadily Requested Questions
Want a refresher on Arthur Breitman? Listed here are the questions readers most frequently ask about him.
Who’s Arthur Breitman?
Arthur Breitman is a French-born pc scientist and former Wall Avenue quantitative analyst who co-founded Tezos along with his spouse, Kathleen Breitman. He authored the unique Tezos whitepaper in 2014 below the pseudonym L.M. Goodman and stays the community’s CTO in 2026.
What did Arthur Breitman invent or discovered?
Breitman co-founded Tezos, a self-amending blockchain that lets token holders vote to improve the protocol with out a laborious fork. He additionally co-founded Dynamic Ledger Options, the corporate that constructed Tezos forward of its 2017 ICO.
Did Arthur Breitman face authorized bother over the Tezos ICO?
Sure. FINRA fined Breitman $20,000 in 2018 for failing to reveal Tezos enterprise whereas at Morgan Stanley. The Tezos Basis individually settled a class-action lawsuit over the ICO for $25 million in 2020, although a courtroom by no means dominated on whether or not the sale was an unregistered securities providing.
Is Arthur Breitman nonetheless concerned with Tezos in 2026?
Sure. Breitman stays Tezos’ CTO and continues to talk publicly in regards to the undertaking and the broader crypto market, together with a Cointelegraph interview at EthCC 2026 on Bitcoin’s quantum computing dangers.