Improve coin selection guidance

[yashrajd]

Describe your content request

Hello, I would like to see improved guidance for (manual) coin selection.

Link to the page

https://bitcoin.design/guide/how-it-works/coin-selection/

Why would you like to change the content?
If you're requesting a change to existing content, please describe concisely why you would like to change it?

• coin selection can be a sensitive matter in terms of privacy as well as fees
• manual coin selection can be difficult thing for the user because 1) user may have several coins in their wallet 2) there can be a large number of ways to select coins (depending on a number of factors) 2) various coins can have different/arbitrary a) value b) other relevant properties & metadata c) anonymity set with d) previous linkages
• this means the user must optimise/goal-seek for total value, fees as well as privacy, with a large number of possible choices and lots of information to deal with.

This seems to be an open & difficult problem, with no established solutions, and most (all?) applications simply default to a list of coins/addresses with little to no information around it.

The best/unique approach I personally have seen so far is nunchuk (screenshots below), and we should take it into consideration for guidance.

This is an interesting and open UX problem that I face frequently, and imagine more other users face as well.

This is a great opportunity for design solutions/guidance that improve UX while empowering the user to be improve their privacy!

Suggestions
If you have a concrete suggestion on how to change/add the content, write it up here

• devise/discover/document at least couple of approaches to this beyond simply throwing a list of addresses/coins
• make mockups for them
• improve existing page

Additional context

• Some new wallet projects might also be working on this
• a related view inside applications is the address list view, perhaps that can be improved in conjunction with this.

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[yashrajd]

BTCPay Server released a new search & filtering UX for coin selection:

https://blog.btcpayserver.org/btcpay-server-2-2-0/

[yashrajd]

BTCPay Server released a new search & filtering UX for coin selection:

https://blog.btcpayserver.org/btcpay-server-2-2-0/

edit: important to keep in mind these might be more merchant-relevant stuff

Below are related PRs/issues with more context/rationale:

• actual release for these improvements

• feat(wallet): enhance Coin Selection with advanced filters and improved UX btcpayserver/btcpayserver#6755

• Improve coin selection - select all, new filters, increase page size btcpayserver/btcpayserver#6685

• Feat: Select All during Coin Selection btcpayserver/btcpayserver#5285 : "When sending bitcoin there are cases where it is advantageous to exclude specific UTXOs. Being able to select all UTXOs and then selectively remove the ones that shouldn't be moved would be a significant increase to efficiency for such cases.

• Coin selector select all button, usefull when filtering by labels btcpayserver/btcpayserver#5998 : "Use case: Type label then Click select all box. Labels are often entities so it makes sense to want to move all coins known by the same entity at once."