Following the discovery of a security issue submitted through Moonbeam's Immunefi bug bounty program, the Moonbeam Council proposes to upgrade the Moonbeam's runtime to  **version 1504**.

### Runtime 1504 release note :
[https://github.com/PureStake/moonbeam/releases/tag/runtime-1504](https://github.com/PureStake/moonbeam/releases/tag/runtime-1504)  

The fix aims to re-established DELEGATECALL for Ethereum standard precompiles and for smart contracts (while keeping it disabled for custom precompiles)

More information on the security issue can be found in the following announcement : 
[https://moonbeam.network/blog/urgent-security-patch-for-custom-precompiles/](https://moonbeam.network/blog/urgent-security-patch-for-custom-precompiles/)  

To learn more about Moonbeams bug bounties, visit the link below.
Immunefi Bug Bounty Program:
[https://immunefi.com/bounty/moonbeamnetwork/](https://immunefi.com/bounty/moonbeamnetwork/)   

###  Verification
Blake2_256 Hash: `0xadf9d791567b5170326a535af19d2fec6b8d3931cca1083a625b6aeb58e75c0d`  
If you want to apply the best practices and verify the hash of the proposal, we advise you to use srtool

Problem Statement:
- Moonbeam's runtime has a security issue related to DELEGATECALL for Ethereum standard precompiles and smart contracts.

Significance:
- The security issue poses a risk to the integrity and functionality of Moonbeam's runtime.

Proposed Solution:
- Upgrade Moonbeam's runtime to version 1504 to fix the security issue.

Expected Outcomes:
- Improved security and stability of Moonbeam's runtime.

#96 Runtime Upgrade 1504 - Moonriver Network