# Omnichain Vaults   Inside LayerZero's ERC4626 OVault Standard I Matthew Krak

- Channel: [ETHGlobal](https://streameth.org/ethglobal)
- Date: 2025-10-09
- Duration: 27:09
- Topics: LayerZero, omnichain, vaults, ERC4626, OVault, cross-chain, interoperability, smart contracts, security stack, DVN, message passing, composability, token transfer, asset, share, hub chain, deployment, configuration, DeFi, OFT, vertical composability, horizontal composability, validation, liquidity, redemption, Foundry, Hardhat, Arbitrum, Optimism, Base, protocol, wiring, demo, customization, documentation, LayerZero Labs
- Watch: https://streameth.org/watch/yt-Vv9dFOuKriQ
- YouTube: https://www.youtube.com/watch?v=Vv9dFOuKriQ

## Description

Matthew Krak, Developer Ecosystem Lead at LayerZero Labs, presents on building omnichain vaults using LayerZero’s ERC4626 OVault standard. He explains LayerZero’s permissionless, censorship-resistant, and immutable interoperability protocol, enabling developers to deploy smart contracts across any blockchain and send arbitrary data/messages using customizable security stacks (DVNs like Google, Axelar, CCIP, Wormhole).

LayerZero’s architecture supports both vertical and horizontal composability, allowing complex cross-chain execution flows and atomic/non-atomic operations. The talk details how omnichain vaults simplify ERC4626 vault interactions, enabling users to deposit assets on any network and receive shares on any destination, all via a single hub chain. Krak demonstrates deploying an omnichain vault using LayerZero’s tooling, configuring networks, assets, and shares, and wiring contracts for cross-chain communication. He answers questions on vault architecture, asset/share redemption, liquidity, and customization, emphasizing the flexibility and extensibility of the OVault standard for cross-chain DeFi.

00:00 Introduction  
00:27 LayerZero Overview & Interoperability  
01:23 Security Stack & Message Verification  
02:33 Customizable Security & Validation  
03:39 Vertical vs. Horizontal Composability  
04:51 Cross-Chain Token Transfers  
05:41 Omnichain Vaults & ERC4626 Standard  
06:53 Omnichain Vault Workflow  
08:15 Live Demo: Deploying an Omnichain Vault  
11:24 Configuring Networks & Contracts  
12:54 Compiling & Deploying Contracts  
15:16 Asset & Share Token Configuration  
15:58 Wiring Contracts Across Chains  
18:16 Supported Networks & Documentation  
19:07 Testing Cross-Chain Vault Operations  
20:49 Reverse Redemption Flow  
22:07 Q&A: Vault Architecture & Liquidity  
24:36 Vault Limitations & Customization  
26:13 Project Resources & Closing

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