CRYPTOCURRENCY

Bitcoin: I cannot broadcast my raw tx (P2PKH) on testnet: Signature must be zero for failed CHECK(MULTI)SIG operation

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 broadcast of raw transactions (P2PKH). This issue can occur due to several factors, including:

  • Incorrect signature
  • Invalid signature format

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

Step 1: Verify your signature

Make sure that the signature is correct and in the standard format used by Bitcoin. For a valid transaction, the signature must be zero.

Step 2: Verify 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 experiencing issues, consider checking the official documentation or seeking help from the Bitcoin community.

Further troubleshooting steps:

  • Check network compatibility

    Bitcoin: I cannot broadcast my raw tx (P2PKH) on testnet: Signature must be zero for failed CHECK(MULTI)SIG operation

    : Make sure your testnet is compatible with P2PKH transactions.

  • Update your software

    : Regularly update your Bitcoin software to ensure you have the latest features and fixes.

  • Check the official documentation: For more detailed information about testing and error messages, please visit the official [Bitcoin wiki](

Following these steps should help you resolve the issue with broadcasting unprocessed transactions on your testnet. If the issue persists, feel free to ask for further assistance or clarification regarding your specific situation.

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