Ethereum: How do I export an xpub from Bitcoin Core for use in BTCPayServer?

Here is an article on how to export XPR from Bitcoin Core and use it using BTCPAserver:

Export XPR (public key) from Bitcoin Core

As creator of the BTCPAYSERVER program, you will need to be able to check the authenticity of the payment using digital signatures. One common way is to store the public key to the recipient’s key in your database as XPR (public key). In this article, we will help you export the XPR from Bitcoin Core and import it into BTCPAserver.

Step 1: XPR exporting from Bitcoin Core

You can use the Gataddressinfo team to export the XPR from Bitcoin Core using the–XPR option. Here’s an example:

`Bash

Bitcoin-Cli Getaddressinfo–XPR >

`

Change address you want to export your XPR, and 'into the road where you want to save the file.

For example, if you have an ABC123 address, you can run:

Bash

Bitcoin-Cli Getaddressinfo–XPR ABC123> xPR_ABC123.txt

`

This will see a file containing XPR Pem format. Save this file using a .txt extension and it is ready for use.

Step 2: XPR Importing to BTCPAserver

You will need to generate a new private key to import XPR to BTCPAserver using Createnewey. Here’s an example:

`Bash

Bitcoin-Cli Createnewey -Path >

`

Change to the road where you have saved the XPR file, and with the road where you want to save the generated private key.

For example, if you have xpr_abc123.txt file ‘/road/to/xPR, you can run:

Bash

Bitcoin-Cli Createnewey -keli/Road/to/XPR>/Road/to/Private_Key

`

This will generate a new private key and safely protect it in your system.

Check XPR using BTCPAserver

Once you have an imported private key, you can check the authenticity of the payment by using the “Check” command. Here’s an example:

`Bash

BTCPAserver Check -Key – -XPR

`

Change 'into the road where you have saved the generated private key, and with the road you have saved the XPR file.

For example:

Bash

BTCPAserver Confirm – -Key/PATH/TO/PRIVATE_KEY – -XPR/PATH/TO/XPR

`

This will see the result of the inspection indicating whether the payment is valid or not. If the payment is valid, BTCPAserver should show the public key you could use in your app.

Tips and options

• Remember to safely protect the XPR in your system using methods such as encryption and safe password management.

• To check the payments, you can also use other methods, such as using the “Check” command using the -PKEY option instead of importing a new private key.

• If you need more sophisticated inspections or optional signing algorithms, you may want to consider using additional libraries or tools for your specific use.

I hope this article will help you successfully export the XPR from Bitcoin Core and use it with BTCPAserver!

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