# Smart Contracts Keyring Network's smart contracts are used to operate different parts of the protocol. Contracts are written in Solidity and released under a BUSL license. Standard contracts leverage the OpenZeppelin Library (version 4.6.0). See the repository [here](https://github.com/Keyring-Network/keyring-smart-contracts). ## Core Contract The Keyring Core Contract is a single contract that stores user credentials with expiry and allows blacklisting of entities on a per policy basis. See the [repository](https://github.com/Keyring-Network/smart-contracts) for full details of the code. ## Deployments Below are the current deployments, additional chains will follow. Please [get in touch](/docs/resources/get-in-touch.md) if you have any requests.
BlockchainAddress
Ethereum Mainnet0xb0B5E2176E10B12d70e60E3a68738298A7DFe666
Arbitrum0xf26b0F10691ED160734a3A5caf8cA1FCb57eFc9d
Base0xf26b0f10691ed160734a3a5caf8ca1fcb57efc9d
Optimism0xf26b0f10691ed160734a3a5caf8ca1fcb57efc9d
Avalanche0x3A5Dd1FDf3bEdC3a601D0e9BB37bB6CC3B635Bc6
Polygon0xf26b0f10691ed160734a3a5caf8ca1fcb57efc9d
Linea0x899cbf89b644e79f9042c4c96fc513d31063872b
Solana966JxiTW4eagG3jhk4iuJenn4dN2jopkjSHCyT9WGs7T
## Governance Keyring implements admin-upgradable proxies to manage core protocol updates. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.keyring.network/docs/protocol-guide/smart-contracts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.