Robinhood has opened the public mainnet for Robinhood Chain, a Layer 2 network built with Arbitrum technology, according to CoinDesk and Robinhood's developer documentation.

The launch turns a previously announced blockchain plan into live infrastructure. Robinhood's docs list Robinhood Chain as an Arbitrum Layer 2 built on Ethereum, using Ethereum blobs for data availability and ETH as the native gas token. The same documentation gives mainnet connection details, including chain ID 4663, and points users toward the canonical Arbitrum bridge and other routes for moving funds onto the network.

Robinhood framed the chain earlier as infrastructure for tokenized real-world assets, including stock tokens and ETFs that initially used Arbitrum. The company said at the time that its own Layer 2 would be optimized for tokenized assets, 24/7 trading, bridging, and self-custody.

The mainnet matters because Robinhood is no longer only distributing crypto products through a brokerage interface. It is now operating blockchain infrastructure that developers and infrastructure providers can connect to directly. Robinhood's docs name Alchemy as a recommended provider and also list QuickNode, Blockdaemon, dRPC, and Validation Cloud as supported providers.

The conservative read is that Robinhood Chain is a regulated-finance-adjacent experiment moving onchain, not a full replacement for brokerage rails. Its impact will depend on what assets migrate, how access is controlled, and whether tokenized stock products find durable demand outside the United States.