LayerZero
What is LayerZero?
LayerZero is an omnichannel interoperability protocol designed to facilitate cross-chain communication. By enabling secure and efficient message passing across chains, LayerZero allows developers to build decentralized applications (dApps) that operate cohesively over multiple blockchains. This capability enhances the functionality and user experience of dApps by leveraging the unique features of various blockchain ecosystems.
Getting Started with LayerZero on Hedera
To get started quickly, you can begin with the Gitpod demo, which requires no environment setup. Alternatively, you can go directly into the LayerZero Quickstart series. These guides provide an overview of deploying an Omnichain Application (OApp) on Hedera and other EVM-compatible networks, covering essentials like setting up your LayerZero environment and deploying contracts for cross-chain messaging.
Developer Considerations to Note EVM Differences
Please note the smallest unit of HBAR is the tinybar (8 decimal places), while the JSON-RPC relay operates 18 decimal places for compatibility with Ethereum tools. This means when dealing with msg.value, conversions between tinybars and weibars are necessary. Additionally, Hedera’s gas model charges for at least 80% of gas, regardless of usage, and event handling often requires querying mirror nodes. Please take these differences into account, especially when calling quote. Reference the Hedera vs. Ethereum page for a more comprehensive list of differences.
Note: LayerZero currently does not support Hedera Token Service (HTS).
Additional Resources
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