Arthur B is a blockchain entrepreneur who co-founded Tezos, the open-source, self-amending blockchain platform, alongside Kathleen Breitman. Arthur B's Twitter Score is 268 out of 1000 (an Excellent rating) as of August 2026, ranking #1,341 (top 0.5%) among 483,944 tracked accounts.
Arthur B, whose full name is Arthur Breitman, co-founded Tezos and also co-founded the Tezos Foundation, a Swiss foundation supervised by the Swiss Federal Foundation Supervisory Authority that promotes the Tezos protocol through grants and other capital deployment vehicles. He wrote a pair of Tezos white papers in the summer of 2014 under the pseudonym L.M. Goodman, per Wired, proposing Tezos as a self-amending cryptocurrency whose protocol upgrades are approved by stakeholders. The Tezos Foundation identifies him as an early architect of Tezos and a current member of its Foundation Council.
Arthur B previously served as chief executive of Dynamic Ledger Solutions, Inc., the company through which the Tezos project was originally developed. He also founded Agitprop. In April 2018, Wired reported that FINRA suspended him from trading with its members for two years over promoting Tezos while employed at Morgan Stanley. The Tezos fundraiser, conducted in July 2017, raised $232 million in Bitcoin and Ethereum according to Reuters. In 2020, the Tezos Foundation settled related lawsuits by paying $25 million, before federal courts ruled on whether the fundraiser constituted an unregistered securities sale, per Reuters.
Arthur B was listed as an author on a 2026 arXiv paper describing sTEZ, a protocol-native liquid staking mechanism for Tezos. The Tezos protocol has continued to evolve, with the Ushuaia upgrade activating on June 30, 2026, described by Tezos.com as the protocol's 21st upgrade. Arthur B has 43,510 followers as of August 2026 and has published 32,046 posts. He has been mentioned by 382 accounts a total of 1,296 times.
Arthur B's portfolio includes Starknet and Magic.
Who follows Arthur B on X?
The accounts that follow Arthur B include 938 founders, 240 angel investors, 270 influencers and 27 VCs. Among his notable followers are Balaji, Brian Armstrong, Chris Dixon, Marc Andreessen, vitalik.eth and jesse.base.eth.