Flowra has launched an Open Orderflow Auction for Solana, introducing a new block-building framework designed to make the network’s MEV market more competitive and potentially increase validator revenue.
The system allows registered searchers to compete for transaction inclusion through an open auction instead of relying primarily on closed orderflow channels. Flowra says the model can improve price discovery for Solana blockspace while giving validators access to a broader pool of competing bidders.
MEV, or maximal extractable value, refers to the value that can be generated from how transactions are ordered and included in blocks. Searchers compete to identify opportunities such as arbitrage, while validators ultimately control which transactions are processed.
In early testing on a single validator, Flowra said its infrastructure increased compute units per block by 20.6%, moving the validator from 84% to 101% of the Solana network average. The company also reported higher block fees than comparable validator software, 100% block production and 99.999% block engine uptime.
Alongside the auction, Flowra is introducing Programmable Block Policy, which allows validators to define their own transaction inclusion policies at the block-building layer.
The feature is designed to give validators more operational flexibility, particularly those facing institutional or regulatory requirements, without requiring changes to the underlying Solana protocol.
Flowra recently announced a collaboration with compliance infrastructure provider Honeypot to introduce sanctions and risk screening into this layer.
“Solana’s performance has made it one of the industry’s leading blockchain networks, but its MEV market remains largely concentrated,” said Harry Hwang, CEO of Flowra. “By opening block building to transparent competition, we’re creating a more efficient market for blockspace while giving validators greater control over how their blocks are constructed with full verifiability and auditability.”
Flowra’s model takes inspiration from the competitive block-building market that developed on Ethereum, where builders compete to provide blocks to proposers.
The company believes Solana’s high throughput and low-latency architecture can support a similar market-driven approach.
Flowra is currently onboarding institutional-grade validators and plans to expand participation as the network grows. The Open Orderflow Auction is already available to validators and searchers in the Solana ecosystem.
Disclaimer: This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.
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