Flowra Opens Solana Block Building to Competitive Bidding

Flowra, a blockchain infrastructure company, has introduced an Open Orderflow Auction (OOA) system for Solana block building. This system allows registered searchers to compete for transaction inclusion through an open auction instead of relying on private orderflow channels.

The OOA is designed to create more competition around transaction ordering and give validators a larger share of the value generated by Maximal Extractable Value (MEV). Currently, Solana's transaction ordering and MEV market remains tightly concentrated, with many validators relying on closed orderflow channels.

Early testing showed promising results. On one validator, a Flowra-enabled setup increased compute units per block by 20.6%, taking the validator from 84% to 101% of the network average. The company also reported higher block fees than comparable validator software, along with full block production and 99.999% block engine uptime during the test.

Alongside the auction, Flowra has introduced Programmable Block Policy, giving validators more control over which transactions are included in their blocks. This could be useful for validators that need to follow specific regulatory or institutional requirements without making changes to the Solana protocol itself.