The Robinhood Chain network

Robinhood Chain is the blockchain Robinhood built to carry its stock tokens and everything traded against them. Rather than inventing its own security, it leans on Ethereum: the chain runs fast on its own machinery, then writes its records back to Ethereum, where anyone can check them.

In technical terms it is a Layer 2, a chain that processes transactions itself and settles them on Ethereum. It is built on Arbitrum Dedicated Blockchains, the framework also known by its older name, Arbitrum Orbit, and it posts its data to Ethereum as blobs, a cheap form of bulk storage, so everything needed to rebuild the chain’s state is public rather than held by the operator.

Over its own public query interface (JSON-RPC) the chain identifies as ID 4663 (0x1237), and a 5,000-block sample puts the mean block time at 0.102 seconds. The chain’s Blockscout explorer shows 0.1 seconds by its own method, and the two agree. The chain passed 60 million blocks in early September 2026, a height the July mainnet could only reach at that cadence.

Sequencing puts everybody in one queue

Transactions are ordered by arrival time at the sequencer, first come and first served. No priority fee jumps the queue, which removes the gas auction that decides ordering on Ethereum. Gas is paid in ETH, at roughly 0.106 gwei when sampled, and the block gas limit is set to the Arbitrum convention of 2^50 rather than a real ceiling: throughput is governed by a speed limit instead.

Account abstraction is first class. ERC-4337 is supported natively, with gas sponsorship, batched transactions and session keys, which is what lets a broker app hide the wallet from the person using it.

Connecting to it

The public endpoints are rate limited. Alchemy is the recommended provider, and QuickNode, Blockdaemon, dRPC and Validation Cloud all carry the chain.

How far its security guarantees go

L2Beat gives Robinhood Chain no rollup stage at all. It files the chain under “Others”, and states the reason on the page: fewer than five external actors can submit challenges, so a small group could collude with the proposer to finalise an invalid state. Total value secured stands at $2.79bn, of which 39.8% carries additional trust assumptions.

State validation is optimistic, with a challenge period and a closed set of whitelisted validators proposing state roots. Data availability is the strong part of the picture: all data is posted on Ethereum.

Bridges

Value reaches the chain mostly through third-party routes rather than the canonical bridge. Over the 24 hours to 11 September 2026, Relay carried $157.7m, Across at $29.6m and LayerZero at $28.3m, with an average transfer time of eight minutes and eight seconds. USDC arrives as USDC and keeps its form; Paxos’s USDG circulates alongside it and is the quote asset for most stock token pools.