> For the complete documentation index, see [llms.txt](https://staderlabs.gitbook.io/ethereum/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://staderlabs.gitbook.io/ethereum/smart-contracts.md).

# Smart Contracts

<figure><img src="/files/V5FUQBtILH2GlKNQSRJu" alt=""><figcaption></figcaption></figure>

The ETHx Smart Contracts play a crucial role in the Stader-ETHx protocol, serving as the fundamental building blocks of the entire network. These contracts form the foundation upon which various components of the system are constructed, such as the Stader Node CLI and the user interfaces for end user applications.

Here is a comprehensive list of the ETHx Smart Contracts. This list serves as a reference point for ETH staker, node operators, developers, researchers, and enthusiasts who are interested in exploring the inner workings of the Stader-ETHx protocol and understanding how the different components interact with each other.

### ETHx Mainnet Smart Contracts

<table><thead><tr><th width="285">Smart Contract</th><th>Address</th></tr></thead><tbody><tr><td>Stader config</td><td><a href="https://etherscan.io/address/0x4ABEF2263d5A5ED582FC9A9789a41D85b68d69DB">0x4ABEF2263d5A5ED582FC9A9789a41D85b68d69DB</a></td></tr><tr><td>VaultFactory</td><td><a href="https://etherscan.io/address/0x03ABEEC03BF39ac5A5C8886cF3496326d8164E1E">0x03ABEEC03BF39ac5A5C8886cF3496326d8164E1E</a></td></tr><tr><td>Auction contract</td><td><a href="https://etherscan.io/address/0x85A22763f94D703d2ee39E9374616ae4C1612569">0x85A22763f94D703d2ee39E9374616ae4C1612569 </a></td></tr><tr><td>ETHx</td><td><a href="https://etherscan.io/address/0xA35b1B31Ce002FBF2058D22F30f95D405200A15b">0xA35b1B31Ce002FBF2058D22F30f95D405200A15b</a></td></tr><tr><td>Operator reward collector</td><td><a href="https://etherscan.io/address/0x84ffDC9De310144D889540A49052F6d1AdB2C335">0x84ffDC9De310144D889540A49052F6d1AdB2C335</a></td></tr><tr><td>Penalty contract</td><td><a href="https://etherscan.io/address/0x84645f1B80475992Df2C65c28bE6688d15dc6ED6">0x84645f1B80475992Df2C65c28bE6688d15dc6ED6</a></td></tr><tr><td>PermissionedNodeRegistry</td><td><a href="https://etherscan.io/address/0xaf42d795A6D279e9DCc19DC0eE1cE3ecd4ecf5dD">0xaf42d795A6D279e9DCc19DC0eE1cE3ecd4ecf5dD</a></td></tr><tr><td>PermissionedPool</td><td><a href="https://etherscan.io/address/0x09134C643A6B95D342BdAf081Fa473338F066572">0x09134C643A6B95D342BdAf081Fa473338F066572</a></td></tr><tr><td>PermissionlessNodeRegistry</td><td><a href="https://etherscan.io/address/0x4f4Bfa0861F62309934a5551E0B2541Ee82fdcF1">0x4f4Bfa0861F62309934a5551E0B2541Ee82fdcF1</a></td></tr><tr><td>PermissionlessPool</td><td><a href="https://etherscan.io/address/0xd1a72Bd052e0d65B7c26D3dd97A98B74AcbBb6c5">0xd1a72Bd052e0d65B7c26D3dd97A98B74AcbBb6c5</a></td></tr><tr><td>PoolSelector</td><td><a href="https://etherscan.io/address/0x62e0b431990Ea128fe685E764FB04e7d604603B0">0x62e0b431990Ea128fe685E764FB04e7d604603B0</a></td></tr><tr><td>PoolUtils</td><td><a href="https://etherscan.io/address/0xeDA89ed8F89D786D816F8E14CF8d2F90c6BF763f">0xeDA89ed8F89D786D816F8E14CF8d2F90c6BF763f</a></td></tr><tr><td>SDCollateral</td><td><a href="https://etherscan.io/address/0x7Af4730cc8EbAd1a050dcad5c03c33D2793EE91f">0x7Af4730cc8EbAd1a050dcad5c03c33D2793EE91f</a></td></tr><tr><td>Permissioned socializingPool</td><td><a href="https://etherscan.io/address/0x9d4C3166c59412CEdBe7d901f5fDe41903a1d6Fc">0x9d4C3166c59412CEdBe7d901f5fDe41903a1d6Fc</a></td></tr><tr><td>Permissionless socializingPool</td><td><a href="https://etherscan.io/address/0x1DE458031bFbe5689deD5A8b9ed57e1E79EaB2A4">0x1DE458031bFbe5689deD5A8b9ed57e1E79EaB2A4</a></td></tr><tr><td>Insurance fund</td><td><a href="https://etherscan.io/address/0xbe3781CE437Cc3fC8c8167913B4d462347D11F20">0xbe3781CE437Cc3fC8c8167913B4d462347D11F20</a></td></tr><tr><td>Stader oracle</td><td><a href="https://etherscan.io/address/0xF64bAe65f6f2a5277571143A24FaaFDFC0C2a737">0xF64bAe65f6f2a5277571143A24FaaFDFC0C2a737</a></td></tr><tr><td>StaderStakingPoolManager</td><td><a href="https://etherscan.io/address/0xcf5EA1b38380f6aF39068375516Daf40Ed70D299">0xcf5EA1b38380f6aF39068375516Daf40Ed70D299</a></td></tr><tr><td>UserWithdrawManager</td><td><a href="https://etherscan.io/address/0x9F0491B32DBce587c50c4C43AB303b06478193A7">0x9F0491B32DBce587c50c4C43AB303b06478193A7</a></td></tr></tbody></table>

**SD token address (Mainnet) :** [0x30D20208d987713f46DFD34EF128Bb16C404D10f](https://etherscan.io/address/0x30D20208d987713f46DFD34EF128Bb16C404D10f)

### ETHx Testnet Smart Contracts

<table><thead><tr><th width="285">Smart Contract</th><th>Address</th></tr></thead><tbody><tr><td>Stader config</td><td><a href="https://goerli.etherscan.io/address/0x2aa6cEd8Cf0a93884216BaE5dbF4299932aB577B#code">0x2aa6cEd8Cf0a93884216BaE5dbF4299932aB577B</a></td></tr><tr><td>VaultFactory</td><td><a href="https://goerli.etherscan.io/address/0x0BDb1a6D4Ec7e86B95cf2435AF58fbc6776F4ed2">0x0BDb1a6D4Ec7e86B95cf2435AF58fbc6776F4ed2</a></td></tr><tr><td>Auction contract</td><td><a href="https://goerli.etherscan.io/address/0xfCD9b640bF620BD7E7d3085C5462A5f7fcaE01e6">0xfCD9b640bF620BD7E7d3085C5462A5f7fcaE01e6</a></td></tr><tr><td>ETHx</td><td><a href="https://goerli.etherscan.io/address/0x3338eCd3ab3d3503c55c931d759fA6d78d287236">0x3338eCd3ab3d3503c55c931d759fA6d78d287236</a></td></tr><tr><td>Operator reward collector</td><td><a href="https://goerli.etherscan.io/address/0xbb31ab083C5831cAa17eca5750c47119C0F76933">0xbb31ab083C5831cAa17eca5750c47119C0F76933</a></td></tr><tr><td>Penalty contract</td><td><a href="https://goerli.etherscan.io/address/0x55f47deD9BDd3Cc4A5dc49A904A628F932e3a393">0x55f47deD9BDd3Cc4A5dc49A904A628F932e3a393</a></td></tr><tr><td>PermissionedNodeRegistry</td><td><a href="https://goerli.etherscan.io/address/0xA8BbaD2C6d3F2a28EdB85Fc1c87B300EAC77A00d">0xA8BbaD2C6d3F2a28EdB85Fc1c87B300EAC77A00d</a></td></tr><tr><td>PermissionedPool</td><td><a href="https://goerli.etherscan.io/address/0x8A52180A900E4363E34391034764ac23db148e82">0x8A52180A900E4363E34391034764ac23db148e82</a></td></tr><tr><td>PermissionlessNodeRegistry</td><td><a href="https://goerli.etherscan.io/address/0x14F59038b249AA9f44bC3FB7DBfC291C5B21f7F8">0x14F59038b249AA9f44bC3FB7DBfC291C5B21f7F8</a></td></tr><tr><td>PermissionlessPool</td><td><a href="https://goerli.etherscan.io/address/0xccD435de0E3bF8Cf77d21F187f62cdc2B2ad7c32">0xccD435de0E3bF8Cf77d21F187f62cdc2B2ad7c32</a></td></tr><tr><td>PoolSelector</td><td><a href="https://goerli.etherscan.io/address/0xe9ccD3384E0670F7BC679fF45491f22A145fC864">0xe9ccD3384E0670F7BC679fF45491f22A145fC864</a></td></tr><tr><td>PoolUtils</td><td><a href="https://goerli.etherscan.io/address/0xEf08BAdB119ddb09b9Ab28ec422f49947fA204BB">0xEf08BAdB119ddb09b9Ab28ec422f49947fA204BB</a></td></tr><tr><td>SDCollateral</td><td><a href="https://goerli.etherscan.io/address/0x78CAa9aA3820254045c90C3d07C3CB841E7F7529">0x78CAa9aA3820254045c90C3d07C3CB841E7F7529</a></td></tr><tr><td>Permissioned socializingPool</td><td><a href="https://goerli.etherscan.io/address/0x4E1d40bccC6E41bACfa69a3ff09A137cAC0218C7">0x4E1d40bccC6E41bACfa69a3ff09A137cAC0218C7</a></td></tr><tr><td>Permissionless socializingPool</td><td><a href="https://goerli.etherscan.io/address/0x34E8Fac4962AF984d6040cec240d1d12eFfac14E">0x34E8Fac4962AF984d6040cec240d1d12eFfac14E</a></td></tr><tr><td>Insurance fund</td><td><a href="https://goerli.etherscan.io/address/0x7D6CE3D6bA2D7020307F90b6dfD4ABFe09F3eCE6">0x7D6CE3D6bA2D7020307F90b6dfD4ABFe09F3eCE6</a></td></tr><tr><td>Stader oracle</td><td><a href="https://goerli.etherscan.io/address/0x22F8E700ff3912f3Caba5e039F6dfF1a24390E80">0x22F8E700ff3912f3Caba5e039F6dfF1a24390E80</a></td></tr><tr><td>StaderStakingPoolManager</td><td><a href="https://goerli.etherscan.io/address/0xd0e400Ec6Ed9C803A9D9D3a602494393E806F823">0xd0e400Ec6Ed9C803A9D9D3a602494393E806F823</a></td></tr><tr><td>UserWithdrawManager</td><td><a href="https://goerli.etherscan.io/address/0x1048Eca024cB2Ba5eA720Ac057D804E95a809Fc8">0x1048Eca024cB2Ba5eA720Ac057D804E95a809Fc8</a></td></tr></tbody></table>

**SD token address (Testnet):** [0x0406f539f24Be69baa8b88ED6eABEdb7b3cfdc60](https://goerli.etherscan.io/address/0x0406f539f24Be69baa8b88ED6eABEdb7b3cfdc60)