# Network Information

- [GIWA Contracts](https://docs.giwa.io/giwa-chain/en/network-information/contracts.md): You can find the key contract addresses for the GIWA Mainnet and Testnet here.
- [Transaction Fees](https://docs.giwa.io/giwa-chain/en/network-information/transaction-fees.md): How are transaction fees charged on GIWA which tokens are accepted as the fee?
- [Differences between Ethereum and GIWA](https://docs.giwa.io/giwa-chain/en/network-information/diffs-ethereum-giwa.md)
- [Flashblocks](https://docs.giwa.io/giwa-chain/en/network-information/flashblocks.md): Flashblocks lets you receive early transaction confirmation signals without waiting for the next block to be produced. This enables real-time responsiveness for apps that require fast user feedback.


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