Epicenter - Learn about Crypto, Blockchain, Ethereum, Bitcoin and Distributed Technologies

In this special episode, we revisit a fireside conversation between Vitalik Buterin and Friederike Ernst at DappCon 2026 in Berlin. They explore the Ethereum Economic Zone (EEZ), a new vision for Ethereum built around synchronous composability, app chains, and real-time proving.Following the fireside, Sebastien and Friederike break down the ideas behind the EEZ and discuss what this new paradigm could mean for Ethereum's future.Topics covered include:• The Ethereum Economic Zone and synchronous composability• App chains, privacy networks, and prediction markets• Ethereum as an economic operating system for the internet• Sequencing, MEV, and shared liquidity across chains• Enterprise, government, and institutional use cases• Why this approach differs from Cosmos, Polkadot, and other ecosystem visions• The future of Ethereum beyond rollup fragmentationLinks:Lido: https://lido.fi/stvaults?mtm_campaign=epicenterSponsors: Lido V3 introduces stVaults: a modular staking infrastructure that lets builders and institutions deploy custom staking vaults, while staying anchored to stETH as a shared liquidity layer.Get started building with Lido V3 today: https://lido.fi/stvaults?mtm_campaign=epicenterBlock Space Forum: https://blockspace.forum/NEAR AI Cloud now lets developers deploy OpenClaw—the rapidly growing open-source AI agent platform—inside Trusted Execution Environments, providing hardware-level encryption with cryptographic attestations. With OpenClaw on NEAR AI Cloud, you can run agents with cloud convenience, but without traditional cloud data exposure. No hardware to manage. No trust assumptions required. Learn more at near.ai.

In this episode, host Friederike Ernst is joined by Kubi Mensah, CEO and co-founder of Gattaca, the company behind Titan Builder. Kubi sheds light on the highly competitive and often opaque world of Ethereum block building, explaining how Gattaca evolved from a centralized exchange proprietary trading firm to one of the three dominant builders responsible for constructing the vast majority of Ethereum blocks today .  They dissect the true "journey of a transaction," revealing why over half of all Ethereum transaction value bypasses the public mempool in favor of private order flow auctions and MEV-protection services . Kubi explains the intricate mechanics of top-of-block bidding by high-frequency DeFi arbitrageurs, the necessity of extreme latency optimization, and the "flywheel effect" that makes block building a natural oligopoly . Finally, the discussion turns to the future of the Ethereum roadmap, unpacking how upcoming upgrades like ePBS (enshrined Proposer-Builder Separation) and FOCIL (Fork-Choice Enforced Inclusion Lists) aim to permanently alter the power dynamics between block builders, validators, and originators .  Topics04:15 Transitioning from TradFi Trading to Ethereum Block Building09:30 Redefining the Builder: Relays and Order Flow Auctions15:00 Unpacking the Mempool: Public vs. Private Transactions21:45 The Anatomy of a Block & "Top-of-Block" Arbitrage27:10 How Builders Pay Proposers to Win Auctions35:20 The Oligopoly: Why Only 3 Builders Dominate Ethereum42:15 Trust in the Dark Forest: Handling Searcher Bundles49:00 The Convergence of Builders and Solvers55:30 The Impact of ePBS, FOCIL, and Pre-confirmationsSponsors: Lido V3 introduces stVaults: a modular staking infrastructure that lets builders and institutions deploy custom staking vaults, while staying anchored to stETH as a shared liquidity layer.Get started building with Lido V3 today: https://lido.fi/stvaults?mtm_campaign=epicenterBlock Space Forum: https://blockspace.forum/