Bitcoin: High-Threshold Multisig Transaction Failure – “Signature must be zero to fail CHECK(MULTI)SIG”
In the Bitcoin world, multisig transactions are a crucial mechanism that allows multiple users to control and authorize a certain amount of funds. However, when these transactions reach their destination, things can quickly go wrong. A recent pattern has emerged in the logs where 5 out of 8 P2SH (private key hash) scripts failed the CHECK(MULTI)SIG operation, and the critical requirement is that the signature be “zero” to fail the check.
In this article, we will delve into the details of the issue and explore potential solutions to address it. By understanding what is happening behind the scenes and how to approach troubleshooting, you can effectively improve your Bitcoin infrastructure and ensure successful multisig transactions.
What is the CHECK(MULTI)SIG operation?
The CHECK(MULTI)SIG operation is an important function in the Bitcoin protocol that verifies the signature in a P2SH transaction. This is important to ensure that only authorized users (signatories) have control over funds, preventing unauthorized transactions. The operation verifies the integrity of the script and the signatures associated with the transaction.
Problem: 5 out of 8 P2SH script failures
When attempting to execute 5 out of 8 P2SH scripts, the CHECK(MULTI)SIG operation fails, resulting in the error “Signature value must be zero on failed CHECK(MULTI)SIG operation.” This indicates that there is a problem with the signature being generated or verified for the transaction.
Causes of Failure
There are several possible causes for this issue:
- Invalid Script: The script itself may contain errors that prevent the CHECK(MULTI)SIG operation from successfully completing.
- Signatures are not zero: Insufficient or missing signatures can cause the operation to fail.
- Script length exceeds threshold
: Bitcoin uses a 64-byte limit for scripts; exceeding this limit can cause verification failures.
Multisig transaction failure with high threshold – “signature must be zero” requirement
In summary, the issue is related to the requirement “Signature value is zero on failed CHECK(MULTI)SIG operation”. This is an essential security measure designed to prevent unauthorized transactions. If a high threshold (for example, 5 out of 8 P2SH scripts) fails the CHECK(MULTI)SIG operation, an error message will be displayed stating that the signature must be null.
How to troubleshoot
To resolve this issue, follow these steps:
- Check script integrity: Make sure the script is valid and properly formatted.
- Check signatures: Make sure all signatures are present and correctly generated.
- Adjust script length
: If exceeding the 64-byte limit is causing problems, consider shortening the script to meet this requirement.
- Consider Multisig configuration: Review your multisig configuration to ensure it is set up correctly.
Conclusion
In conclusion, Bitcoin: Multisig Transaction Failure with High Threshold – “Signature Must Be Zero for Failed CHECK(MULTI)SIG Operation” is a legitimate issue that needs attention. By understanding the cause of the issue and taking troubleshooting steps, you can improve your multisig infrastructure and ensure successful transaction processing.
