Private Atomic DvP on Ethereum No More Trade offs | Alex Gluchowski (Matter Labs) at ETHConf

Thu, Jul 2, 2026, 12:00 AM

In this talk, Alex Gluchowski, co-founder of Matter Labs and zkSync, presents Prividium, a framework for private atomic delivery versus payment (DvP) on Ethereum. He frames DvP, a term from institutional finance meaning token swap settlement, as one of the most important and unsolved problems for institutions adopting blockchain. Alex walks through why each existing solution falls short: public chains like Ethereum have great properties but expose all positions and transactions, ruling them out for banks bound by secrecy rules. Private permissioned chains offer perfect privacy but are not interconnected, limiting their value since the whole point of blockchains is being the internet of value. External bridges connecting private chains become the de facto settlement layer with their own trust assumptions, losing the security of both origin and target chains. Mediated networks using operator attestation or fully homomorphic encryption still rely on contractual or threshold trust in operators. Alex introduces Prividium as a framework where institutions run their own cryptographically secured private chains on their own infrastructure with absolute physical data privacy, while settling on Ethereum as the credibly neutral settlement layer. Zero knowledge proofs guarantee that even a dishonest or compromised operator cannot finalize invalid transactions. He highlights the ability to deploy a smart contract once that virtually mirrors into all zones and enforces rules automatically without the issuer ever seeing the underlying data. He then walks through the technical flow of private atomic DvP: parties agree on a transaction, generate a cryptographic commitment hash, post it to a data availability layer and Ethereum settlement layer, lock assets on both sides, and use the canonical L2 state roots on Ethereum to verify execution and either release funds or revert atomically. He closes by noting the network is growing with the Kerry network consortium of five US regional banks plus participation from Deutsche Bank and other FMIs. 00:00 Introduction 00:11 What Is DvP and Why It Matters 00:48 The Tradeoffs in Existing Blockchain Solutions 01:07 Public Chains Are Too Public for Institutions 01:54 Private Chains Are Isolated and Disconnected 02:33 External Bridges Become the Settlement Layer 03:14 Mediated Networks and Their Trust Assumptions 03:35 Operator Attested and FHE Limitations 04:40 Introducing Prividium 05:09 Cryptographically Secured Private Chains on Ethereum 05:42 Permissioning, Roles, and OIDC Integration 06:16 Zero Knowledge Proofs Guarantee Execution Correctness 06:50 Rules That Apply Beyond Your Zone 07:30 The Old Way: Bilateral Agreements and Rulebooks 07:52 Virtual Mirrored Smart Contracts Enforce Rules Automatically 08:16 Why Private DvP Is the Hardest Cross Zone Example 08:51 Traditional Sequential DvP and Counterparty Risk 09:40 Atomic Swaps Collapse Settlement Risk 10:10 How Private Atomic DvP Works Step by Step 10:36 Cryptographic Commitments and Mutual Intent 11:17 Posting Commitments to DA and Settlement Layer 11:50 Locking Assets in Escrow Contracts 12:26 Reading L2 State Roots from Ethereum 12:55 Verifying Cross Chain Execution 13:25 Happy Path Release vs Revert Path 14:04 Multi Zone Chained Transactions 14:36 The Kerry Network and Growing Adoption 14:48 Closing _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ *ETHConf 2026* ETHConf is a 3 day event for founders, industry leaders, and builders who are excited about the possibilities of building on top of Ethereum. Connect with 2,000+ top innovators in crypto, finance, technology, and policy at our inaugural three-day event packed with showcases, demos, partnerships, and conversations shaping the future of the global economy. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow ETHConf* X: https://x.com/ethconf Website: https://ethconf.com _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🎟️ Get your early bird tickets for ETHConf 2027: https://ethconf.com/2027#tickets 🎤 View the full ETHConf 2026 Speaker Schedule: https://ethconf.com/schedule _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _