Golden Finance reports that on March 25, Ethereum block builder Eureka Labs announced the completion of a $6.7 million seed round funding led by Spark Capital and Collider Ventures.
The company introduced the concept of “programmable blocks,” incorporating executable logic during block construction, allowing blocks to do more than just package transactions—such as temporary fund calls, advanced computations, and more precise transaction ordering. Eureka Labs was founded in December 2024 and has become the fourth-largest Ethereum block builder, holding about 1.5% market share, still behind the leading builders.
The funding was completed in two phases: $4.7 million raised in April 2025 and an additional $2 million in June. The company stated that the funds will be used to expand its block construction technology and promote the application of “programmable blocks” within the Ethereum ecosystem.
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