Bitcoin Blockchain Error: Invalid Schnorr Signature in Broadcast RPC
The Bitcoin blockchain is experiencing problems with RPC broadcasting, a critical function that allows nodes to broadcast raw transactions to the network. A recent error message from the Bitcoin Core client points to a problem with Schnorr’s signature verification process.
Error details
The error message provided by the Bitcoin Core client reads:
Broadcast error: {"code":-26,"message":"non-mandatory-script-verify-flag (invalid Schnorr signature)"}
This code indicates that an invalid Schnorr signature is used in the broadcast process. The message field indicates the reason for the error as “non-mandatory-script-verify-flag”.
Schnorr Signature Review
For those unfamiliar with the Schnorr signature scheme, it is a secure digital signature scheme developed by Nick Wise and Simon De Courcy. It uses a compact public key representation to represent private keys.
In Bitcoin, the Schnorr signature scheme is used for scripting payments, which allows nodes to verify transactions without having to store the entire history of the blockchain. However, this process depends on the script-verify' flag set in the transaction, and checking this flag during streaming can lead to errors if implemented incorrectly.
Causes of the error
The error message indicates a problem withnon-mandatory-script-verify-flag. This flag is used by nodes to verify that the script associated with the transaction has been executed. If this flag is set, but the Schnorr signature is invalid, it may cause errors during transmission.
In most cases, this type of error will be resolved if the node can correct the signature or restart the transaction from the previous block where the verification was successful. However, in some cases, an incorrect or outdated client implementation can lead to such errors.
Solution
To solve this problem, you can try the following:
- Check transaction history: Make sure you haven't started any transactions from a recent block that may still be set with thenon-mandatory-script-verify-flag’. Try running these transactions again and verifying their signatures before they are broadcast.
- Update Client Configuration: Check to see if any updates are available to fix known issues or bugs in your Bitcoin Core client implementation.
Conclusion
An error message from the Bitcoin Core client indicates a problem with the Schnorr signature verification process during streaming. To solve this problem, it is necessary to determine and eliminate the root cause of the error, which may include viewing the transaction history, updating the client configuration, or asking for help from the Bitcoin community.
By understanding the root cause of the error and implementing fixes, you can ensure a smoother experience with Broadcast RPC and the overall functionality of the Bitcoin blockchain.