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Aug 28, 2026 54 min

Block Building & PropAMMs on Ethereum

from Credible Commitments Hosted by Apriori, Kubi Mensah, Patrick Ambrus

In this episode of Credible Commitments I chat with Kubi Mensah CEO/Co-founder at Gattaca, the company behind Titan Builder. We discuss block building from first principles, Ethereum's evolving market microstructure featuring a dense discussion on Prop AMMs, and what takes to build a world class product-centric organization. (00:00) - Intro (00:23) - Time at YC (03:14) - Block building from first principles (05:36) - Post merge block building (09:48) - Service oriented edge (12:03) - Technical excellence & counterparty obsession (15:46) - Ethereum community (18:31) - Tight product cycles (21:43) - Sources of orderflow (22:36) - PropAMMs (26:22) - PropAMM research to product (31:44) - Increase velocity of assets onchain (33:35) - PropAMMs earnestly (36:15) - Not exactly RFS, PAMM is quite novel (37:55) - ACE and more expressivity (39:55) - PropAMMs & L2s (42:58) - Takers, routing, and a standardized interface (44:47) - Leveraging LLMs (48:10) - Agentic demand for blockspace (50:07) - The Blockspace Forum Disclaimer Nothing in this episode should be interpreted as financial, technical, or legal advice.

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In this episode of Credible Commitments I chat with Kubi Mensah CEO/Co-founder at Gattaca, the company behind Titan Builder. We discuss block building from first principles, Ethereum's evolving market microstructure featuring a dense discussion on Prop AMMs, and what takes to build a world class product-centric organization.

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Block Building & PropAMMs on Ethereum

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This episode was published on August 28, 2026.

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