Offchain Labs / Arbitrum is a protocol foundation firm based in New York, New York that offchain labs is the company that developed arbitrum, a leading ethereum layer 2 scaling ecosystem using optimistic rollup technology. founded in 2018 by steven goldfeder, ed felten, and harry kalodner out of princeton university, offchain labs builds arbitrum one, arbitrum nova, and the arbitrum orbit and stylus technology stack. the arbitrum foundation supports the arbitrum dao, which governs the protocol and its arb token treasury. in 2025 the ecosystem expanded institutional and real-world asset adoption, with the dao allocating tokenized u.s. treasury exposure through its step program. arbitrum has ranked among the largest ethereum layer 2 networks by total value locked. They serve clients in US. Offchain Labs / Arbitrum is listed on The Token Playbook's vetted provider registry at thetokenplaybook.com/registry/offchain-labs-arbitrum.