Solana’s Nostr Entrypoint Environment (NosteND) is a new API that allows developers to create and interact with Nostr, Solana’s decentralized identity platform. However, I couldn’t find any official documentation on the sol_invoke_signed_c syscall function in the NosteND environment.

When you tried to use this feature, you encountered an error message stating that the statement is missing a required signature. This suggests that the sol_invoke_signed_c system call is either not available or not compatible with your version of Solana.

Here is an article that provides some information and possible solutions:

Title: Passing PDA seeds and augmenting sol_invoke_signed_c system call in solana_nostd_entrypoint environment: Missing required signature for instruction

Introduction:

Creating a Personal Delegation Account (PDA) on Solana involves several steps, including deploying a program using the solana_nostd_entrypoint API. While this approach allows for some flexibility and customization, it also requires knowledge of the underlying Nostr entry point environment.

In recent updates, Solana has introduced new features and APIs to simplify the process. However, some developers have reported issues with missing required signatures when using certain system calls. In this article, we will explore the issue with sol_invoke_signed_c syscall in the solana_nostd_entrypoint environment and propose some possible solutions.

The issue:

When creating a PDA account on Solana, you need to deploy a program using the soluna_program::entrypoint::solve function. This involves passing parameters such as metadata, seed values, and the PDA boost value. The sol_invoke_signed_c system call is used to interact with Nostr, but it requires a specific signature to be passed.

However, some developers have reported that this system call does not contain the required signature for the instructions. This error message indicates that you need to provide the correct signature when calling sol_invoke_signed_c.

Possible Solutions:

To resolve the issue, you can try the following solutions:

• Check the official documentation: Although the official Solana documentation does not mention this specific error, it is always a good idea to check the latest updates and changes.

• Use the entrypoint::call function instead: If possible, consider using the entrypoint::call function of the solana_nostd_entrypoint API, which allows for more flexibility and customization.

• Provide the correct signature:

  Make sure to pass the required signature when calling sol_invoke_signed_c. You can check the documentation or consult the Solana community to verify the correct signature.

Conclusion:

Creating a PDA account on Solana requires some knowledge of the underlying Nostr entry point environment, but it is not impossible. By understanding the issues and potential solutions described in this article, you should be able to resolve the error and successfully deploy your program using soluna_program::entrypoint::solve.

However, if you are new to Solana development or the NosteND API, it may be helpful to explore other resources and documentation to learn about the latest features and best practices.

Additional Resources:

• Official Solana Documentation: [Solana Documentation](

• Solana Community Forums: [Solana Forum](

• Nostr Documentation: [Nostr API Documentation](

By following these steps and consulting the official documentation, you should be able to resolve the sol_invoke_signed_c syscall error when creating a PDA account on Solana.