Harmonic Fires Back in Solana’s Block Building Wars | Ben Coverston
Tuesday, 17 March 2026 · 2 min read · Listen to the episode ↗
The episode emphasizes the importance of competition in Solana's network, warning against monopolization that could harm decentralized principles. Ben Coverston, CEO of Harmonic, discusses their innovative block building solution on Solana and its commitment to transparency and scalability. The conversation also addresses potential challenges of protocol changes that may affect transaction privacy and block builders' roles, advocating for a decentralized approach to enhance Solana's DeFi market structure.
Speaker 1 emphasizes the importance of open competition in the Solana network, warning against monopolization that could lead to fee manipulation and unfair practices, undermining the principles of decentralized markets. Ben Coverston, CEO of Harmonic, shares his background in quantitative trading and his transition into DeFi, driven by Solana's speed compared to Ethereum. He highlights the favorable retail prices on Solana and acknowledges the core developers' efforts in enhancing the chain, which has facilitated the development of various trading applications.
The conversation shifts to Harmonic's role as the first fully remote block building solution on Solana, facing significant technical challenges. Ben discusses the importance of transparency and publicly available on-chain data for fair analysis. He expresses Harmonic's commitment to eliminating rate limits and enhancing features like river protection, aiming to be the fastest and most scalable infrastructure layer for Solana.
Concerns are raised about proposals for in-protocol ordering that could entrench specific strategies, emphasizing the need for validators to maintain control over block building. The importance of transaction privacy is highlighted, allowing applications to send transactions only to trusted validators to mitigate front-running issues. The discussion also touches on the challenges institutional market makers face transitioning from traditional finance to decentralized finance, with products like those from Nizomi effectively addressing these challenges.
The speakers argue against a monopoly scheduler, advocating for multiple market makers to achieve better spreads than centralized exchanges. They discuss the implications of potential protocol changes, suggesting that deterministic transaction ordering could diminish the role of block builders. The conversation also explores the importance of censorship resistance and the potential of Automated Market Quotas (AMQs) for Solana's market structure, while raising concerns about validator censorship.
Speaker 1 critiques the narrative that Solana's market structure is flawed, emphasizing the need for data to support this view. They advocate for a unique DeFi market structure tailored to Solana's environment, contrasting it with traditional finance. The speakers express confidence in the value of decentralization and the ongoing designs for innovative matching engines to enhance composability and market structure on Solana.
The conversation concludes with a focus on practical solutions rather than hypothetical scenarios, asserting that the future will favor decentralized finance designs over traditional finance systems. The speakers express optimism about the growth of the Solana ecosystem and a willingness to continue discussions in the future.
This summary was generated from the episode transcript and can contain mistakes.