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16 changes: 16 additions & 0 deletions CONTRIBUTING.md
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# Contributing Guide — MegaETH Chains

Welcome and thank you for contributing!
This repository contains EVM-compatible chain metadata following the [ethereum-lists/chains](https://github.com/ethereum-lists/chains) schema.

## ✅ Before You Start
- Each chain lives in `_data/chains/<caip-2>.json`.
- Icons go into `_data/icons/<name>.json` with valid IPFS URLs (max 250 KB).
- `shortName` and `name` must be unique across the repo.
- For L2/shard networks, define the `parent` section properly.

## 🧪 Local Validation
Run locally before submitting:
```bash
./gradlew run
npx prettier --write _data/*/*.json