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Ethereum Foundation

$6,000

ethereum.foundation
ethereumfndn

About

The Ethereum Interop Layer is an on-chain protocol and a set of accompanying standards that allows users and applications to interact with the entire Ethereum ecosystem, instead of interacting with separate fragmented chains and rollups. The EIL protocol is closely integrated with ERC-4337 and build on top of Account Abstraction to achieve a near-universal Chain Abstraction. The EIL SDK is a toolkit that allows you to easily interact with this protocol in your application

Prizes

🧱 Best use of the EIL SDK ⸺ $6,000
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1st place
$3,000
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2nd place
$3,000
Build the best application using the EIL SDK, which is designed to make ETH and ERC-20 tokens seamlessly transferable across all L2 chains. Projects should demonstrate seamless token movement across multiple chains. The most innovative, creative and technically sound implementations of the EIL SDK will win. As the EIL SDK is designed to boost usability, good UX will also play a role. Judges will evaluate creativity, functionality, and how effectively the project leverages the EIL SDK.

Qualification Requirements

Must demonstrate actual usage of the EIL SDK with relevant transaction payloads attached in the submission.

Workshop

🛠️ Ethereum Interop Layer (EIL) SDK Workshop

build and extend a real DeFi protocol using the EIL SDK. We’ll walk through the architecture, implement a complete ...

This workshop is happening in-person

05:00 PM UTC-03 — Friday, Nov 21, 2025 in Workshop Room 3