Flowra has launched its Open Orderflow Auction (OOA), a block-building framework for Solana designed to increase competition in the network’s MEV market and boost validator revenue.
The OOA allows registered searchers to compete for transaction inclusion through an open auction rather than closed orderflow channels.
Flowra said the model is intended to improve price discovery and allow validators to capture a larger share of the value generated by MEV.
In early testing on a single validator, Flowra said its setup increased compute units per block by 20.6%, moving the validator from 84% to 101% of the network average.
The company also reported higher block fees than comparable validator software, along with 100% block production and 99.999% block engine uptime.
Alongside the auction, Flowra is introducing Programmable Block Policy, which allows validators to set their own transaction inclusion rules at the block-building layer.
According to Flowra, the feature gives validators more flexibility to meet regulatory and institutional compliance requirements without changes to the underlying Solana protocol.
Flowra recently partnered with compliance infrastructure provider Honeypot to add sanctions and risk screening at this layer.
Flowra said its architecture draws on Ethereum’s competitive block-building model, where open bidding has increased proposer revenue.
The company believes Solana’s high throughput and low-latency infrastructure could support a similar market-based approach to block building.
Flowra is currently onboarding institutional validators to its Open Orderflow Auction, with a broader rollout planned as the network expands.
The company said the OOA is now available to validators and searchers participating in the Solana ecosystem.
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