# Smart Contracts

## Mainnet Addresses

### Ethereum

<table><thead><tr><th width="293">Smart Contract</th><th>Address</th></tr></thead><tbody><tr><td>OperatorRegistry Proxy</td><td><a href="https://etherscan.io/address/0xef1a89841fd189ba28e780a977ca70eb1a5e985d">0xEf1a89841fd189ba28e780A977ca70eb1A5e985D</a></td></tr><tr><td>WitnessHub Proxy</td><td><a href="https://etherscan.io/address/0xd25c2c5802198cb8541987b73a8db4c9bcae5cc7">0xD25c2c5802198CB8541987b73A8db4c9BCaE5cC7</a></td></tr><tr><td>AlertManager Proxy</td><td><a href="https://etherscan.io/address/0xd1b991530d07f03226b0192e0161e1142d3552ee">0xD1b991530D07f03226b0192E0161E1142d3552eE</a></td></tr></tbody></table>

### Witness Chain (Polygon CDK) Mainnet Addresses

| Smart Contract                   | Address                                                                                                                            |
| -------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| Operator Registry Proxy          | [0xd11e55b821aC8509D2C17f5f76193351252d69aE](https://explorer.witnesschain.com/address/0xd11e55b821aC8509D2C17f5f76193351252d69aE) |
| Operator Registry Implementation | [0xF146Ec17Fae59B597cfC957E0cc7046D10d6f924](https://explorer.witnesschain.com/address/0xF146Ec17Fae59B597cfC957E0cc7046D10d6f924) |
| RequestHandlerProxy              | [0x3105CB54f2708D1c9aA9829BEcE64097206df6C2](https://explorer.witnesschain.com/address/0x3105CB54f2708D1c9aA9829BEcE64097206df6C2) |
| ChallengerRegistryProxy          | [0x49220De1c883D9358e3cCe0aB42304460216Dc2C](https://explorer.witnesschain.com/address/0x49220De1c883D9358e3cCe0aB42304460216Dc2C) |
| ProverRegistryProxy              | [0xCdb30BE21A44fB111A48661ECc755B34a41C4e82](https://explorer.witnesschain.com/address/0xCdb30BE21A44fB111A48661ECc755B34a41C4e82) |
| PoBChallengeCoordinatorProxy     | [0xDdB480842858070263Cf143312309F2196be9A0C](https://explorer.witnesschain.com/address/0xDdB480842858070263Cf143312309F2196be9A0C) |
| PoLChallengeCoordinatorProxy     | [0x0E0DDE77B2C190AE83E5a1Da1A52b34f1EfCa4e4](https://explorer.witnesschain.com/address/0x0E0DDE77B2C190AE83E5a1Da1A52b34f1EfCa4e4) |