Flowra has introduced its Open Orderflow Auction (OOA), a new block-building framework designed for the Solana network. The launch is intended to increase competition in Solana’s MEV market and boost validator revenue by allowing registered searchers to compete for transaction inclusion through an open auction, rather than relying on closed orderflow channels.
According to Flowra, the auction model improves price discovery and enables validators to capture a larger share of MEV-generated value. In early testing on a single validator, the setup increased compute units per block by 20.6%, moving the validator from 84% to 101% of the network average. Flowra also reported higher block fees compared with comparable validator software, alongside 100% block production and 99.999% block engine uptime.
Alongside the OOA, Flowra is rolling out Programmable Block Policy, a feature that lets validators set their own transaction inclusion rules at the block-building layer. The company said this flexibility helps validators meet regulatory and institutional compliance requirements without changing 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, and believes Solana’s high-throughput, low-latency infrastructure can support a similar market-based approach. The Open Orderflow Auction is now available to validators and searchers in the Solana ecosystem, with Flowra currently onboarding institutional validators and planning a broader rollout as the network expands.
