Rebar Labs, a team of seasoned veterans from the Ethereum industry, is bringing their expertise to Bitcoin to tackle the emerging challenges posed by on-chain Maximal Extractable Value (MEV). The company has successfully raised $2.9 million in seed funding, led by 6th Man Ventures, with participation from ParaFi Capital, Arca, Moonrock Capital, and UTXO Management.

Carl Vogel of 6th Man Ventures commented, “As the ecosystem of the world’s largest digital asset grows, Rebar’s products will enable good MEV for fair and efficient markets, creating more value for users and miners and enabling the foundation for a flourishing ecosystem.”

Rebar Labs’ Focus Areas

Rebar Labs has unveiled three key areas of focus in their quest to enhance the Bitcoin ecosystem:

Infrastructure: An alternative to the public mempool via private transactions will allow miners to capture potential MEV revenues and optimize block construction and fees. Other ecosystem participants affected by the issues created by MEV will be able to leverage wallet integrations provided byRebar’s upcoming products Products: To highlight the growing MEV-generating activity on the Bitcoin protocol, the company is expected to build data products and dashboards allowing for easy access to the relevant information. Research: Rebar Labs intends to produce analysis, articles, and reports on new, unexplored activities on Bitcoin, with a focus on MEV.

What is MEV?

Maximal Extractable Value (MEV) involves various techniques used by market actors to capture additional value by exploiting price inefficiencies in blockchain transactions. This concept has become increasingly relevant in Bitcoin with the rise of on-chain activities such as NFTs and token protocols like BRC-20s and Runes.

We cover the idea in more detail here.

The announcement comes at a curious time as Bitcoin on-chain activity has significantly subsided following a significant ramp-up earlier this year. Runes, a new token proposal launched during the halving last April has faced significant headwinds since its release. Concern over MEV has also led to significant research efforts looking to move most of this activity to secondary layers to improve user experience and avoid miner incentives issues.

In a conversation with Bitcoin Magazine, the team expressed confidence in the idea that activity involving MEV would continue to grow moving forward. 

Earlier this year, US-based Marathon Digital Holdings announced their own proprietary service for users to submit transactions to their MARA pool.

Rebar Labs hopes that harnessing MEV can help mitigate the impact of diminishing block rewards by offering opportunities to subsidize mining revenue through MEV activity. Users could also benefit from Rebar’s infrastructure to defend themselves against frontrunning, sandwich attacks, and other strategies that could impact market fairness.

The company plans to launch its first products this summer.

“Bitcoin is entering a new era of programmability and increased trading activity,” said Alex Luce, CEO of Rebar Labs. “Our mission is to develop infrastructure and products that help the Bitcoin community — its users, miners, and developers — navigate the emerging MEV landscape on Bitcoin, ensuring a more equitable and transparent ecosystem.”

Rebar Labs is a portfolio company of UTXO Management, a regulated capital allocator focused on the digital assets industry. Bitcoin Magazine is owned by BTC Inc., which operates UTXO Management. UTXO invests in a variety of Bitcoin businesses, and maintains significant holdings in digital assets.

​ Rebar Labs intends to provide MEV-aware infrastructure, products, and research