Bitcoin: I can’t send my raw tx (P2PKH) on the testnet: Signature must be zero if CHECK(MULTI)SIG fails

Error 0x40004e4b: Failed to broadcast raw transaction

The error message you are receiving indicates that the Bitcoin testnet, also known as the “Testnet” or “Rig Testnet”, is not accepting your raw transaction broadcasts (P2PKH). This issue can arise due to several factors, including:

• Incorrect signature

• Invalid signature format

  

Here are some steps you can take to resolve this issue:

Step 1: Check your signature

Make sure the signature is correct and in the standard format that Bitcoin uses. The signature must be zero for the transaction to be valid.

Step 2: Validate your signature format

If your signature is not in the correct format, try changing it to the standard format [0x…txid…hash…signature]. If you are still having trouble, consider checking the official documentation or seeking help from the Bitcoin community.

Additional troubleshooting steps:

• Check network compatibility – Make sure your testnet supports P2PKH transactions.

• Update your software – Regularly update your Bitcoin software to ensure you have the latest features and fixes.

• Check official documentation – Check out the [official Bitcoin wiki]( for more detailed information about testing and error messages.

By following these steps, you should be able to resolve the issue with raw transaction broadcasting on your testnet. If the issue persists, feel free to ask for additional support or clarification on your specific situation.