Walletwasabi: With Cold Card + Wasabi, change address not found in Electrum

[MaxHillebrand]

General Description

This is reported to me by a user, I can reproduce.

I have the xpub from my ColdCard loaded in Wasabi and Electrum. When I have a UTXO for say 10 Bitcoin and I use Wasabi to create a PBST sending 1 BTC out. I sign it in my CC, broadcast it in Wasabi. The balance in Wasabi shows 9 BTC. When I look at it in Electrum it shows the whole 10 BTC being sent. Its like Electrum is not finding the change address from Wasabi. I increased the number of addresses in Electrum to I think 300 and Electrum still does not get the change address. In Wasabi I can still send that 9 BTC out, but in Electrum I can't. I know ColdCard, Wasabi, and Electrum have the same derivation path but looking at wallet.recovery.org it says Wasabi uses wide depths or something like that. Wasabi can see those PBST transactions created in Electrum just not the other way around.

[yahiheb]

https://walletsrecovery.org/ this is the website Max is referring to.

[nopara73]

You have to elevate the change gap limit. But don't do this, you're ruining the privacy of everyone you're mixing with.

[OhCrap99]

I increased the gap limit in Electrum to 200 and Electrum still does not see the change output from a transaction sent in Wasabi.

[nopara73]

Make sure you're changing the change gap limit, not the gap limit.

[yahiheb]

wallet.change_gap_limit_for_change doesn't work.
you should do this wallet.gap_limit_for_change = 100 (instead of 100 put the number you want).
You might take a look at this comment.

[OhCrap99]

This command worked!!

wallet.gap_limit_for_change = 100

Thank you!!

[OhCrap99]

"http://wallet.gap_limit_for_change = 100"

On Thu, Sep 26, 2019 at 10:39 AM yahiheb [e-mail] wrote:

wallet.change_gap_limit_for_change doesn't work.
you should do this wallet.gap_limit_for_change = 100 (instead of 100 put
the number you want).
You might take a look at this comment
https://github.com/spesmilo/electrum/issues/4322#issuecomment-385217328.

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