# Smart Contracts & Fees

### Arena-Z Mainnet Contracts

<table><thead><tr><th>Title</th><th>Address</th><th>Explorer Link</th><th data-hidden data-type="files"></th></tr></thead><tbody><tr><td>League of Kingdoms Arena</td><td>0x1D1BFCFC6ae6FE045f151C7e589fB241AAC89733</td><td><a href="https://explorer.arena-z.gg/token/0x1D1BFCFC6ae6FE045f151C7e589fB241AAC89733">https://explorer.arena-z.gg/token/0x1D1BFCFC6ae6FE045f151C7e589fB241AAC89733</a></td><td><a href="https://2528549469-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMtjTVyHC6BRash0situM%2Fuploads%2FWF3kszH8U1UaRgJ9xxVp%2FLOKA%20title.png?alt=media&#x26;token=bc2a59b3-8aad-4aa1-8001-d7b7679fc1ad">LOKA title.png</a></td></tr><tr><td>Dragon Soul Token</td><td>TBD</td><td>TBD</td><td><a href="https://2528549469-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMtjTVyHC6BRash0situM%2Fuploads%2FbPb2q5bI18D4uCkOlGtw%2FDST.png?alt=media&#x26;token=2ee9fbf5-7db6-4df0-9314-15a7730f55da">DST.png</a></td></tr><tr><td>USDT</td><td>0x38E94043E132c4972D31E82Cc0659259bcF9876C</td><td><a href="https://explorer.arena-z.gg/token/0x38E94043E132c4972D31E82Cc0659259bcF9876C">https://explorer.arena-z.gg/token/0x38E94043E132c4972D31E82Cc0659259bcF9876C</a></td><td><a href="https://2528549469-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMtjTVyHC6BRash0situM%2Fuploads%2FUDjFx1vjxep6t9WZrvwk%2Fimages.jpeg?alt=media&#x26;token=a141ec55-dc2e-4fea-9ac3-fe7e075eab27">images.jpeg</a></td></tr><tr><td>WETH</td><td>0x4200000000000000000000000000000000000006</td><td><a href="https://explorer.arena-z.gg/address/0x4200000000000000000000000000000000000006">https://explorer.arena-z.gg/address/0x4200000000000000000000000000000000000006</a></td><td><a href="https://2528549469-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMtjTVyHC6BRash0situM%2Fuploads%2FdtGgnbfANrqZIMlR9ZkJ%2Fweth.jpeg?alt=media&#x26;token=30b9a251-5a31-4c24-bee1-284b12eb553e">weth.jpeg</a></td></tr><tr><td>Bridged USDC</td><td>TBD</td><td>TBD</td><td></td></tr></tbody></table>

***

### Arena-Z L1 Contracts

| Title                        | Address                                    |
| ---------------------------- | ------------------------------------------ |
| ProxyAdmin                   | 0xeefd1782d70824cbcacf9438afab7f353f1797f0 |
| SystemConfig                 | 0x34a564bbd863c4bf73eca711cf38a77c4ccbdd6a |
| AddressManager               | 0x1cb5fb7da1444e2d895420442d246787b7afa95d |
| L1ERC721Bridge               | 0xbc404ae11e4e9da3ea9276aa6dcca31097d4f4ee |
| OptimismPortal               | 0xb20f99b598e8d888d1887715439851bc68806b22 |
| L1StandardBridge             | 0x564eb0cefcca86160649a8986c419693c82f3678 |
| DisputeGameFactory           | 0x658656a14afdf9c507096ac406564497d13ec754 |
| AnchorStateRegistry          | 0x924911e2ccadb4638447ccd00b6cfb040cc08560 |
| L1CrossDomainMessenger       | 0x0be364912219bc74760f1d1c25f4866b328ebfc6 |
| DelayedWETHPermissionedGame  | 0xaf1308930b721e763a6b21cf143e4e86e702f164 |
| OptimismMintableERC20Factory | 0xa33f75a3a2babd502cbc1a6f54345b529c1f306e |

***

## How do network fees work?[​](https://docs.soneium.org/docs/builders/fees#how-do-network-fees-work) <a href="#how-do-network-fees-work" id="how-do-network-fees-work"></a>

When you make a transaction, you're actually paying two separate costs: an L2 execution fee for processing your transaction on the Layer 2 network, and an L1 security fee for publishing that transaction data on the main Ethereum chain. The L1 fee typically takes the bigger bite out of your wallet since it's tied to Ethereum's often congested network, while the L2 fee is usually smaller.

Both of these fees fluctuate based on network traffic, following the same EIP-1559 pricing mechanism. If your transaction isn't time-sensitive, you can significantly reduce costs by timing your submissions strategically - weekends often have lower gas prices on L1, and monitoring network activity can help you catch periods when fewer transactions are being processed on either layer. This simple timing strategy can lead to meaningful savings, especially for larger or more complex transactions; You can read and learn more about EIP-1559 [here](https://consensys.io/blog/what-is-eip-1559-how-will-it-change-ethereum).

For additional details about fee calculation, please refer to the [OP-stack developer documentation](https://docs.optimism.io/stack/transactions/fees).

<img src="https://2528549469-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMtjTVyHC6BRash0situM%2Fuploads%2FtWzJvkmIts4hp6gwWWhJ%2Farena_z_emoji_128x128.png?alt=media&#x26;token=e8a7480f-9cb4-4594-9866-7cc3ef4c1204" alt="" data-size="line">