I'm trying to connect my BTCPay server to hardware walet by entering the public key. The HW wallet account is P2WPKH, the public key has a zpub… format.

When I enter the key, server correctly generates a bc1… address for confirmation, but when I hit the button to confirm, I'm redirected back to the previous page (somewhat modified) with error "Invalid derivation scheme".

This pub key worked on my previous BTCPay instance without any problems. I have no idea what is going on. Any help or insight appreciated!

Running BTCPay Server v1.11.1

enter image description here

  • Hi Gusep, have you tried filing a bug report with BTCPayServer?
    – Murch
    Commented Aug 14, 2023 at 15:01
  • I haven't yet, tried the support chat but still no luck
    – Gusep
    Commented Aug 15, 2023 at 20:29
  • I discovered, that I'm not even able to cerate hot wallet. Created a new discussion on btcpayserver github regarding this but still not an inch closer to solution github.com/btcpayserver/btcpayserver/discussions/5260
    – Gusep
    Commented Aug 16, 2023 at 10:23

2 Answers 2


So at the end, there was some part of .NET SDK missing on the system. Managed to pull the log from NBXplorer service.

System.IO.FileNotFoundException: Could not load file or assembly 'System.Threading.Tasks.Parallel

Reinstall of .NET6.0 and rebuild of NBXplorer solved the issues.


If this is a regression introduced in a newer release of BTCPayServer, it's better addressed there. That said, from the screenshot the text input seems to be expecting a descriptor.

zpub is just another encoding for an xpub which implicitly conveys it is used to derive at specific path for P2WPKH outputs (more about this in this answer). Therefore you can just convert your zpub to an xpub and use a wpkh(xpub/84'/1'/0'/1/*) which should derive the same bc1.. addresses as when using a zpub.

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