Bitcoin Blockchain Error: Invalid Schnorr Signature in Broadcast RPC
The Bitcoin blockchain is experiencing issues with Broadcast RPC, a critical feature that allows nodes to broadcast raw transactions to the network. The latest error message from the Bitcoin Core client indicates an issue with the Schnorr signature verification process.
Error Details
The error message provided by the Bitcoin Core client states:
Broadcast Error: {"code":-26,"message":"non-mandatory-script-verify-flag (Invalid Schnorr signature)"}
This code indicates that an invalid Schnorr signature is being used in the broadcast process. The « message » field lists the error reason as « non-mandatory-script-verify-flag ».
Schnorr Signature Overview
For those unfamiliar with the Schnorr signature scheme, it is a secure digital signature scheme developed by Nick Wise and Simon De Courcey. It uses a compact representation of the public key to represent private keys.
In Bitcoin, the Schnorr signature scheme is used for the payment script, which allows nodes to verify transactions without storing the entire blockchain history. However, this process relies on the transaction having a “script verification” flag set, and verifying this flag during transmission can cause errors if it is not implemented properly.
Causes of the error
The error message indicates an issue with the “non-mandatory-script-verify-flag”. This flag is used by nodes to verify that the script associated with a transaction has been executed. If this flag is set but the Schnorr signature is invalid, errors can occur during transmission.
In most cases, this type of error would be resolved if the node could correct the signature or rerun the transaction from a previous block that was successfully verified. However, in some cases, such errors can be caused by an incorrect or outdated client installation.
Solution
To resolve the issue, you can try the following steps:
- Check your transaction history: Make sure you have not performed any transactions from the last block that may still be set with the « non-mandatory-script-verify-flag ». Try rerunning these transactions and verify their signatures before broadcasting.
- Update your client configuration
: Check for any updates that address known issues or bugs in the Bitcoin Core client installation.
Conclusion
The error message from the Bitcoin Core client indicates a problem with the Schnorr signature verification process during broadcasting. To resolve this issue, it is necessary to identify and fix the root cause of the error, which may include reviewing transaction history, updating the client configuration, or seeking help from the Bitcoin community.
By understanding the root cause of the error and implementing fixes, you can ensure a smoother Broadcast RPC experience and overall functionality of the Bitcoin blockchain.