Integrate with other protocols

Oct 13, 2025 by pynkocean.com 101 views

Contract Signature Failed: Understanding EIP-1271 and Gnosis Safe

Introduction

When developing a smart wallet app, integrating with existing protocols and standards is crucial for seamless user experience. In this context, we're working on a project that utilizes the ERC-4337 Smart Account, with DFNS as the owner. However, we've encountered an issue when creating a Safe wallet through Wallet Connect from our Smart Account. The error message indicates a "Contract Signature Failed" with a reference to EIP-1271. In this article, we'll delve into the world of EIP-1271, Gnosis Safe, and Safe Core to understand the root cause of this issue and explore possible solutions.

What is EIP-1271?

EIP-1271 is a proposed Ethereum Improvement Proposal that provides a standardized way for contracts to check if a signature is valid. This proposal introduces a new function, isValidSignature(bytes32 hash, bytes signature), which allows contracts to verify the authenticity of a signature. The main goal of EIP-1271 is to simplify the process of signature verification, making it easier for developers to integrate signature-based authentication into their contracts.

How Does EIP-1271 Relate to Gnosis Safe?

Gnosis Safe is a decentralized, multi-sig wallet that allows users to manage their digital assets securely. It's built on top of the Ethereum blockchain and utilizes the Safe Core protocol to provide a robust and scalable solution for digital asset management. When creating a Safe wallet through Wallet Connect from our Smart Account, we're essentially interacting with the Gnosis Safe protocol. The "Contract Signature Failed" error message is likely related to the EIP-1271 implementation in the Gnosis Safe contract.

Safe Core and EIP-1271

Safe Core is the underlying protocol that powers Gnosis Safe. It's designed to provide a secure and efficient way for users to manage their digital assets. Safe Core utilizes a combination of cryptographic techniques and smart contract logic to ensure the integrity and security of user assets. The EIP-1271 implementation in Safe Core is crucial for verifying the authenticity of signatures, which is essential for secure digital asset management.

Understanding the "Contract Signature Failed" Error

When we encounter the "Contract Signature Failed" error message, it indicates that the EIP-1271 implementation in the Gnosis Safe contract has failed to verify the signature. This could be due to various reasons, such as:

Invalid signature: The signature provided is not valid or is not properly formatted.
Incorrect hash: The hash used for signature verification is incorrect or is not properly generated.
EIP-1271 implementation issue: There might be an issue with the EIP-1271 implementation in the Gnosis Safe contract, causing the signature verification to fail.

Debugging the Issue

To debug the issue, we need to investigate the root cause of the "Contract Signature Failed" error message. Here are some steps we can take:

Verify the signature: Ensure that the signature provided is valid and properly formatted.
Check the hash: Verify that the hash used for signature verification is correct and properly generated.
Investigate EIP-1271 implementation: Review the EIP-1271 implementation in the Gnosis Safe contract to ensure it's correct and properly configured.
Test the contract: Test the Gnosis Safe contract with different scenarios to ensure it's working as expected.

Conclusion

In conclusion, the "Contract Signature Failed" error message is likely related to the EIP-1271 implementation in the Gnosis Safe contract. By understanding the basics of EIP-1271 and Safe Core, we can better diagnose the issue and take corrective action. Debugging the issue requires a thorough investigation of the signature, hash, and EIP-1271 implementation. By following the steps outlined above, we can resolve the issue and ensure seamless integration with the Gnosis Safe protocol.

Additional Resources

For further information on EIP-1271, Gnosis Safe, and Safe Core, please refer to the following resources:

EIP-1271: https://eips.ethereum.org/EIPS/eip-1271
Gnosis Safe: https://gnosis-safe.io/
Safe Core: https://docs.gnosis-safe.io/docs/safe-core

Future Work

In the future, we plan to:

Improve EIP-1271 implementation: Enhance the EIP-1271 implementation in the Gnosis Safe contract to ensure it's robust and secure.
Integrate with other protocols: Integrate our smart wallet app with other protocols and standards to provide a seamless user experience.
Provide better error handling: Improve error handling mechanisms to provide more informative error messages and better debugging tools.

By following this article, we hope to have provided a comprehensive understanding of the "Contract Signature Failed" error message and the related EIP-1271 implementation in the Gnosis Safe contract. If you have any further questions or concerns, please don't hesitate to reach out.
Contract Signature Failed: EIP-1271 Discussion - Q&A

Introduction

In our previous article, we explored the concept of EIP-1271 and its relation to Gnosis Safe and Safe Core. We also discussed the "Contract Signature Failed" error message and the steps to debug the issue. In this article, we'll provide a Q&A section to address some of the common questions and concerns related to EIP-1271 and Gnosis Safe.

Q&A

Q: What is EIP-1271, and why is it important?

A: EIP-1271 is a proposed Ethereum Improvement Proposal that provides a standardized way for contracts to check if a signature is valid. It's essential for secure digital asset management, as it ensures that signatures are properly verified before executing transactions.

Q: How does EIP-1271 relate to Gnosis Safe?

A: Gnosis Safe is a decentralized, multi-sig wallet that utilizes the Safe Core protocol to provide a robust and scalable solution for digital asset management. EIP-1271 is implemented in the Gnosis Safe contract to verify the authenticity of signatures, ensuring the security and integrity of user assets.

Q: What causes the "Contract Signature Failed" error message?

A: The "Contract Signature Failed" error message can be caused by various reasons, including:

Invalid signature
Incorrect hash
EIP-1271 implementation issue

Q: How can I debug the "Contract Signature Failed" error message?

A: To debug the issue, follow these steps:

Verify the signature
Check the hash
Investigate EIP-1271 implementation
Test the contract

Q: What is the difference between EIP-1271 and EIP-191?

A: EIP-191 is another Ethereum Improvement Proposal that provides a standardized way for contracts to check if a signature is valid. However, EIP-191 is more focused on the signature format, whereas EIP-1271 is more focused on the signature verification process.

Q: Can I use EIP-1271 with other protocols and standards?

A: Yes, EIP-1271 can be used with other protocols and standards, such as ERC-20 and ERC-721. However, ensure that the EIP-1271 implementation is compatible with the specific protocol or standard being used.

Q: How can I improve the EIP-1271 implementation in my contract?

A: To improve the EIP-1271 implementation in your contract, follow these best practices:

Use a secure and reliable signature verification library
Implement proper error handling mechanisms
Test the contract thoroughly to ensure compatibility with different scenarios

Q: What are some common pitfalls to avoid when implementing EIP-1271?

A: Some common pitfalls to avoid when implementing EIP-1271 include:

Using an insecure or outdated signature verification library
Failing to implement proper error handling mechanisms
Not testing the contract thoroughly to ensure compatibility with different scenarios