Trezor Suite now supports coin control

[Charles-Tim]

I am not a trezor user, but I saw this new update which I like very much. I even thought Trezor had coin control before. One of the reasons I like electrum wallet, but which is often used as a desktop online wallet. The Trezor Suite update, version 22.9.3 which I like very well is the coin control. Coin control won't be new to people that uses Electrum, or people that connects their hardware wallet to electrum, but now on Trezor Suit according to the new update.

https://blog.trezor.io/coin-control-in-trezor-suite-92f3455fd706

If trezor has included coin control, that means that people using Trezor Suit would be able to select certain UTXO(s) to spend from. This can improve privacy to some extent.

Using Coin control
The best place to learn how to use new features is directly in Trezor Suite. Click on the lightbulb icon in the bottom right of the app and you’ll find the following instructions in the Trezor Suite guide:

Navigate to the Bitcoin account you want to spend from
In the Send tab, complete the ‘Address’ and ‘Amount’ fields
Click the Coin control button to reveal your available UTXOs
You can then manually select the UTXOs you want to spend
Once you’re satisfied with your selection, click Review & Send
Then confirm the transaction on your Trezor device as usual

Remember, your choice of UTXOs must cover at least the amount being sent and the transaction fees. Avoid using low-value ‘dust’ UTXOs of 546 sats or less, as you will overpay in fees.

Follow the above link to read more about Trezor Suite coin control feature and other updates.

Other updates
Display bitcoin units as satoshis
Improved exports for transaction history
Tor progress bar

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[Hispo]

I just saw the update available today, I am downloading it as I type this.
I was personally looking forward to this version, since I was considering to switch to Electrum because there one can choose to display the balance in sats and also have coin control, now I do not need to move from Trezor Suite.

I feel coin control is specially important as addition to keep security and privacy of Trezor users, however according to Trezor, they are aiming to release Coinjoin by next year, if they manage to do so it could be a game charger in their favor in the eyes of privacy advocates,  I doubt other wallets and specially Ledger will take such step so quickly because they may end up risking some partnerships with highly regulated entities, but I am afraid I am not so well informed as I should on Ledger's road map for their products, if anyone feels like commenting on it, please do.

I wonder how exchanges and regulators will react when Trezor releases Coinjoin, though. Things could get nasty, Binance and Coinbase could be forced by regulators not to accept/froze funds without a clear path across the blockchain in order to pressure Trezor to drop the feature.

[DireWolfM14]

Trezor has been improving Trezor Suite in very practical ways since they launched it.  By adding Coin control they pretty much make it as practical of a wallet client as Electrum in most standard use-cases.  I don't use Trezor Suit very much myself, usually only if I'm dealing with the few alts that I still have.

Trezor Suite allows us to connect directly to a self-hosted Electrum server, and now with coin-control it will help maintain privacy.  Pretty cool upgrade, kudos to the Trezor team for making this a priority.

[OROBTC]

Trezor has been improving Trezor Suite in very practical ways since they launched it.  By adding Coin control they pretty much make it as practical of a wallet client as Electrum in most standard use-cases.  I don't use Trezor Suit very much myself, usually only if I'm dealing with the few alts that I still have.

Trezor Suite allows us to connect directly to a self-hosted Electrum server, and now with coin-control it will help maintain privacy.  Pretty cool upgrade, kudos to the Trezor team for making this a priority.

Indeed, now that Trezor now allows coin control that makes our security just that much better.  Both BitBox2 and Trezor now allow coin control.  I like both HW wallets and can recommend them both.

[dkbit98]

I saw this update while it was pre-release, and I think that Coin Control in Trezor Suite is done much better than same thing in ledger hardware wallet app.
You can now manually select UTXOs and I see they are working on more stuff for implementation in their github roadmap, but they need to update it.
I still prefer using Electrum wallet, but for people that want to use few more altcoins Trezor Suite is perfect solution:
https://github.com/orgs/trezor/projects/28
 

[OROBTC]

...

I just sent out a TX using Trezor's new coin control feature (after the update of course).  It went fine, works as expected.

Trezor also allows multiple recipients, straight from Trezor Suite.

The above two procedures in Suite raised an interesting question.  Would a TX like the below actually BE a coinjoin, assuming one took care to ensure that the inputs are "different" (that is not apparently linked)?  Or would it just "look" like one?

Inputs:

bc1q...1    0.01 BTC
bc1q...2    0.01
bc1q...3    0.01
bc1q...4    0.01
bc1q...5    0.01

Outputs:

bc1q...a    0.01 BTC
bc1q...b    0.01
bc1q...c    0.01
bc1q...d    0.01
bc1q...e    0.01

With a carefully chosen low fee.

[Hispo]

Trezor has been improving Trezor Suite in very practical ways since they launched it.  By adding Coin control they pretty much make it as practical of a wallet client as Electrum in most standard use-cases.  I don't use Trezor Suit very much myself, usually only if I'm dealing with the few alts that I still have.

I have noticed there is an important difference between the Coin control of Electrum and Trezor. Electrum has a feature.which allows the user to freeze coins inputs, so they won't get spent in any case, on the other hand, it seems Trezor Suite needs us to specify which inputs we don't want to spend everytime we want to send satoshis. This requires the user to constantly remember the input they want to avoid to move, of course there is also the option to tag the input but there must be people who wish not to use the tagging.

In this matter, Electrum still has an advantage over Trezor Suite, quite useful when comes to managing dust attacks, for example.

[PawGo]

The main advantege of Electrum is to spend/block based on address, while in Trezor Suite we much check/uncheck every input. Easy to make a mistake, especially if you have more than 1 page of results.
What I did was to see (using Electrum) how it should look like and then execute transfer using TS.
But at the end I am glad it is introduced (finally).

[Pmalek]

What I did was to see (using Electrum) how it should look like and then execute transfer using TS.
But at the end I am glad it is introduced (finally).

In that case, it makes more sense to stick with Electrum to take advantage of the more advanced coin control capabilities. Opening one to check what needs to be done in order to replicate the transaction in the second software...nah. I prefer Electrum's coin control over the one I have seen in Ledger Live and I am sure I would do the same if I used Trezor Suite.

Can someone post a few screenshots from their app so we can see how their coin control feature actually looks like? Cover all the identifiable information of course.   

[SFR10]

The Trezor Suite update, version 22.9.3 which I like very well is the coin control.

It looks good, but they should've included a search field to look for UTXOs based on their labels ^{[the labeling feature alone, isn't enough when dealing with a long list or rather multiple pages]}.

I wonder how exchanges and regulators will react when Trezor releases Coinjoin, though.

If the "first part of the following comment" still has something to do with it, then I don't think there's going to be a significant negative reaction from the above things.

Or would it just "look" like one?

IMO, it falls under this.

Can someone post a few screenshots from their app so we can see how their coin control feature actually looks like?

Here's a "short clip" from the above blog post.

[Husna QA]

Can someone post a few screenshots from their app so we can see how their coin control feature actually looks like? Cover all the identifiable information of course.  

A few days ago, I posted it on the Indonesian board using Trezor Suite v22.9.2-beta (https://github.com/trezor/trezor-suite/releases/tag/v22.9.2):
https://bitcointalk.org/index.php?topic=4981850.msg60972415#msg60972415

From the appearance of the Coin Control feature in v22.9.3., there doesn't seem to be much change from the beta version.
Here are some recent screenshots of Trezor Suite v22.9.3 (https://github.com/trezor/trezor-suite/releases/tag/v22.9.3):

[Pmalek]

<Snip>

Thanks, I appreciate it. So the interface shows the addresses and the amounts for each one. The most recent transactions are on the top followed by older ones that get listed underneath. I wonder how Trezor Suite would display the coins if there were multiple UTXOs per address? Would each UTXO have its own line or would they list all of them under that particular address in a sub-list format?

[Husna QA]

-snip- I wonder how Trezor Suite would display the coins if there were multiple UTXOs per address? Would each UTXO have its own line or would they list all of them under that particular address in a sub-list format?

As far as I know, they list all of them under that particular address.
I just tried using the Coin Control feature in Trezor Suite by sending some amounts of satoshi at once to multiple addresses.







https://tbtc1.trezor.io/tx/16425e919c4a15b9ee0334522f3891e04dd16fc08bdacc8ea06053d16f5e1ea4

[SFR10]

I wonder how Trezor Suite would display the coins if there were multiple UTXOs per address? Would each UTXO have its own line or would they list all of them under that particular address in a sub-list format?

Unfortunately, addresses with multiple UTXOs occupy multiple lines as opposed to being grouped together in an organized manner ^{[depending on how someone normally uses addresses in general, it could quickly become a mess]}:

[Pmalek]

<Snip>

If I compare the layout of Trezor Suite with that of Ledger Live in terms of coin control, I like the way Trezor did it more. There is a timestamp and you can tag the UTXOs if you want to. Ledger Live doesn't have timestamps. They only show a confirmations count for each UTXO. Similarly to Trezor Suite, each UTXO has it's own line. I would prefer if I could see the USD value besides the BTC amount for each line, but that's also missing.

The thing that's really badly done is that when you open the coin control window, all your UTXOs are selected by default and you have to unselect each one manually. It isn't that annoying if you have only a couple of UTXOs in that particular BTC account, but imagine trying to spend coins from an account with 100 UTXOs. You need to unselect 99 times to spend only from one. And there is no unselect all button anywhere. 

Amateurishly done, and without much thought.

[PawGo]

Unfortunately, addresses with multiple UTXOs occupy multiple lines as opposed to being grouped together in an organized manner ^{[depending on how someone normally uses addresses in general, it could quickly become a mess]}:

As I see lines are sorted alphabetically (by address), it makes sense, I am not sure if globabl chronological sorting would be useful.
It woule be good to have possibility to select all the input from a given address - and opposite, freeze address and/or it's inputs, I hope it is matter of time when it will be implemented, as they progress slowly but well
Nice add-on would be to have automatically (call it 'safety feature' or whatever) disabled spending from "dust" inputs (<570 sats or sth).

[SFR10]

and you can tag the UTXOs if you want to.

Yes, but unfortunately, it still doesn't have a proper search feature to easily select UTXOs based on their tags ^{[in other words, the outcome is somewhat similar to the middle part of your second paragraph]}:

• It isn't that annoying if you have only a couple of UTXOs in that particular BTC account, but imagine trying to spend coins from an account with 100 UTXOs.
  

Ledger Live doesn't have timestamps. They only show a confirmations count for each UTXO.

Trezor Suite also shows the confirmation count, but the detail button doesn't appear unless we hover over the UTXOs.

I would prefer if I could see the USD value besides the BTC amount for each line, but that's also missing.

Luckily, that already exists on Trezor Suite ^{[except in the above screenshots for obvious reasons]}.

As I see lines are sorted alphabetically (by address),

No, they're sorted by date ^{[descending order]}.

[Pmalek]

@SFR10
How does Trezor Suite handle the coin selection when you open the coin control window for the first time? I mentioned previously that on Ledger Live, all UTXOs are selected by default. On the screenshot you posted above, none of the UTXOs are selected, but it's also possible that you unticked them. So are they ticked or unticked by default?

I can't figure out what Ledger brainiac thought it would be a good idea to have them all selected and force the users to manually go through the list and untick everything. Hopefully the people from Trezor took a more natural route. 

[SFR10]

@SFR10
How does Trezor Suite handle the coin selection when you open the coin control window for the first time? I mentioned previously that on Ledger Live, all UTXOs are selected by default. On the screenshot you posted above, none of the UTXOs are selected, but it's also possible that you unticked them. So are they ticked or unticked by default?

Since I usually play around with most of its settings and it tends to save them for the next time that I open them, I can't accurately answer how the situation was for the very first time that I opened the coin control feature but regardless of that, there's a deselect button for all of the UTXOs in Trezor Suite

I can't figure out what Ledger brainiac thought it would be a good idea to have them all selected and force the users to manually go through the list and untick everything.

Considering that they introduced it "two years ago", I'm surprised they haven't polished it yet ^[SMH].

[Pmalek]

Considering that they introduced it "two years ago", I'm surprised they haven't polished it yet ^[SMH].

I am sure it also depends on the feedback they get from their users. If there aren't many complaints, they won't consider it important to change things. Personally, there isn't much they can do to beat Electrum when it comes to the ease of use of their coin control. If they are honest to themselves, they should be aware of that fact. No one is going to favor an inferior product/software over one that feels and looks better and is easier to use.