# Architecture

The Jasper Vault system is primarily governed by four main contracts:

1. **Issuance Module**: Manages fund flows.
2. **Option Module**: Manages all orders.
3. **Vault Manage Module**: Controls the actions and activities of various vaults.
4. **Option Service Module**: Handles option liquidations.

You may refer to the contract addresses provided below:

Sei EVM: 

{% embed url="<https://docs.jaspervault.io/~/changes/d6F24Etal8Wf8jH3WpwS/development/deployed-smart-contracts/sei-evm>" %}

Arbitrum:

{% embed url="<https://docs.jaspervault.io/~/changes/d6F24Etal8Wf8jH3WpwS/development/deployed-smart-contracts/arbitrum>" %}


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