Robinhood Chain Keeps First-Come, First-Served Transaction Ordering

Robinhood Chain currently orders transactions on a first-come, first-served basis, with arrival time at the network’s sequencer determining placement rather than the fee a user pays.

The Ethereum-compatible Layer 2 network, built on Arbitrum Dedicated Blockchains, focuses on tokenized real-world assets. Its current policy is designed to prevent transactions from moving ahead of others through higher fees.

The transaction-ordering model differs from Priority Gas Auctions (PGA), which replaced Timeboost on Arbitrum One on Sept. 24, 2026. PGA divides each 250-millisecond block into two 125-millisecond rounds and ranks transactions by their priority fees.

Transactions with higher priority fees can be selected earlier within a round. Transactions that arrive after a round begins wait for the next round, making execution timing more important for activity such as arbitrage and liquidations.

PGA uses standard Ethereum fee fields, allowing users to adjust priority fees for individual transactions. The structure could benefit latency-sensitive professional traders, while Robinhood Chain’s current first-come, first-served approach keeps fee size from determining transaction order.