Ethereum: Segwit address creation

Ethereum: Segwit Address Creation Error on Bitcoin Core

The Ethereum community has been experiencing issues with creating segwit addresses in Bitcoin Core, a popular cryptocurrency client. In this article, we will delve into the error message and possible solutions to resolve this issue.

Error Message:

When attempting to create a new segwit address using Bitcoin Core 15.0.1 on Windows 64-bit, users are greeted with an error message similar to the following:

$ getnewaddress

getnewaddress: unable to find a key that matches the required format

What is Segwit?

Ethereum: Segwit address creation

Segwit (Segmented Witness) addresses are designed for Ethereum and other blockchain networks to improve scalability. Segwit addresses have several benefits, including:

  • Reduced transaction fees

  • Increased throughput capacity

  • Improved network security

Bitcoin Core Version: 15.0.1

The error message indicates that Bitcoin Core is not able to find a key that matches the required format for creating segwit addresses.

Possible Solutions:

To resolve this issue, users can try the following solutions:

1. Update Bitcoin Core to the Latest Version

Ensure that the latest version of Bitcoin Core is installed on the system. You can download the latest version from the [official website](

$ bitcoin-qt --getchangelog

2. Enable Segwit Support

Some users may need to enable segwit support in Bitcoin Core. To do this, follow these steps:

  • Open a terminal and run:

$ bitcoin-qt --enable-segwit=true

  • Restart the Bitcoin Core client.

3. Update Wallet Software

If you have an older wallet software installed, such as Electrum or MyEtherWallet, it may be causing issues with segwit creation. You can try updating these wallets to the latest version:

  • Download and install a new wallet from its official website.

  • Restart your wallet after installation.

4. Add Segwit Private Keys

If you have been using private keys generated by your wallet software, it’s possible that they are not compatible with segwit addresses. You can try generating new private keys specifically for segwit addresses:

  • Open a terminal and run:

$ bitcoin-qt --getnewaddress

  • Follow the prompts to generate a new address.

5. Reset Bitcoin Core to Its Original State

If none of the above solutions work, you can try resetting Bitcoin Core to its original state by:

  • Closing all instances of Bitcoin Core.

  • Deleting the data folder.

  • Restarting the system.

Conclusion:

Creating segwit addresses in Bitcoin Core can be a bit tricky, but there are several solutions available to resolve this issue. By updating Bitcoin Core to the latest version and enabling segwit support, you should be able to create new segwit addresses successfully. Additionally, updating wallet software or generating new private keys specifically for segwit addresses may also help resolve the issue.

Tips and Variations:

  • Be aware that not all wallets support segwit addresses.

  • Some wallets may require additional configuration settings to enable segwit support.

  • For more information on segwit and Bitcoin Core, refer to the official [Bitcoin Core documentation](

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