Optimism has launched a temporary experiment on the OP mainnet that gives preferential transaction order to eligible OP token stakers. This introduces a new form of token utility that is directly tied to access to blockchain blockspace.
The four-week experiment began the next day. May 26th This marks the first stake-based transaction ordering system introduced on the OP Stack chain.
Under this proposal, users who stake OP through Optimism’s PolicyEngineStaining contract will receive transactional order benefits over non-stakers.
This experiment is an alternative to the standard “preferred gas auction” model, where users primarily compete for higher transaction fees.
OP staking now affects transaction order
The rollout will occur in two stages.
meanwhile Phase 1,at least 100,000OP Once staked, we receive strict first-in, first-out transaction orders for up to one week. Placing additional stakes above the threshold will not provide any additional profits.
Phase 2 After that, stake weighted orders will be introduced for up to an additional three weeks.
Under this system, large stakers receive up to a multiplier of the effective priority fee. 3 times.
Optimists said the model uses a square root formula to create diminishing returns for large holders rather than unlimited prioritization powers.
The protocol also states that staking will remain non-custodial and there will be no lock-up or cool-down period upon unstaking.
Experiments with optimism using new sequencer economics
This proposal represents a broader attempt to rethink how Layer 2 block space is allocated.
This experiment allows token staking to influence transaction ordering and order priority, rather than relying entirely on gas bidding wars.
This can have a major impact on:
- market maker,
- arbitrage trader,
- MEV searcher,
- and other high-frequency on-chain participants.
Beyond participation in governance, this mechanism also creates direct economic utility for OP tokens.
This proposal raises concerns about fairness
The experiment could also spark criticism over fairness and centralization.
Some market participants may see this system as the introduction of a “preferential payment” model tied to token ownership, as larger token holders enjoy transactional advantages.
Optimism acknowledged the risks in the document, and reiterated that the order guarantee is not absolute and is “best effort.”
The network also said that OP Mainnet will automatically return to normal transaction order after the four-week test period ends.
Final summary
- Optimism has launched a four-week experiment that will allow eligible OP stakers to receive priority transaction orders on the OP mainnet.
- This proposal introduces a stake weighting sequence mechanism that has the potential to restructure how Layer 2 block space is allocated.
