Optimism Launches Staking-Based Transaction Ordering Experiment on Sepolia Testnet

Foresight News reports that Optimism tweeted about its first experiment with a staking-based transaction ordering mechanism on the OP mainnet. This mechanism is now live on the Sepolia testnet, allowing users to stake OP to gain priority access to the top of the block. There is no need for token locking, no administrator control over funds, and it supports instant unstaking. The experiment is divided into two phases: Phase 1 (FIFO): Staking 100,000 OP grants the same priority level, with transactions ordered on a first-come, first-served basis within the block. Phase 2 (Stake-weighted): Introduces weighted scores based on staking amount, staking duration, and priority gas fees, with a maximum advantage of 3x. A diminishing returns mechanism is implemented to resist flash loan attacks. The experiment can be rolled back to standard ordering at any time without affecting user staking withdrawals. Optimism will announce the results after testing on Sepolia and consider launching it on the mainnet in the future.