Prime as a multisig keystore in Sparrow

Passport Prime
1

I’m setting up a P2WSH multisig in Sparrow Wallet 2.5.3 where my Prime is going to be one of the keys. I’m having trouble adding it. As far as I can tell, in Sparrow I need to add an Airgapped Hardware Wallet, with “Passport Multisig”. On Prime, I go to my account, go to “Connect Wallet”, and choose Sparrow. Here I get the animated QR code, which I scan in Sparrow.

Sparrow then gives me the error message “Correct derivation path not found for script type: P2WSH”.

Instead of the QR, I’ve also tried to export the file. This produces the same error message.

I’ve also noticed the “Import Multisig” option which allows me to scan a QR code, but I don’t know which QR code that would be, so I think that’s for setting up an existing multisig and not creating a new.

What am I doing wrong here?

Edit: I’m starting to suspect that Sparrow doesn’t actually support Prime multisig yet. Looking at PassportMultisig.java I see it derives from ColdcardMultisig and hasn’t received any Prime-specific updates. Being an early adopter can be annoying :-p

2

I was able to create a multisig with passport prime no problem

This video is basically all the steps I used: https://www.youtube.com/watch?v=zaJS1TVGDeQ

3

Thanks for that. I checked the video, and those are the same steps I followed too. Tried both QR code and file, same error. How strange.

Edit: It’s just occurring to me what’s probably wrong – I’m trying this on testnet4, and I’m guessing Sparrow looks for different derivation paths there! Damn, didn’t think about that. I’ll try to verify this a bit later.

4

We don’t have testnet exports on Passport Prime yet. Sparrow + Multisig works on mainnet no issue.

5

I need to retract my previous statement, as I’ve just been corrected by one of my colleagues. Passport Prime does indeed support Testnet and Testnet Multisig with Sparrow. What you need to do is:

  1. Open the Bitcoin Wallet app.

  2. Tap the three dots in the top right corner.

  3. Choose Create Account.

  4. Give your account a name.

  5. Choose Advanced Options.

  6. Set the index number to 0 and then change the network to Testnet.

  7. You can go through the usual pairing process with Sparrow, ensuring that you choose Multisig, and everything should work for you.

Apologies for the confusion. The Testnet option is a little bit hidden, which is exactly why I missed it.

6

Thanks! That’s a bit obscure, yeah. Although probably few people use testnet with this device, here’s my small wish: it should work automatically out of the box like all the competitors I’ve tried do.