I applied to the Designathon and my project [compactor] was accepted! 🥳
event.bitcoin.design/#project-rec8G
HT @MogashniR
![Slack app message from Christoph Ono saying:
And two more projects were submitted:
- Design a lite web UI to manage and automate your node with LNDG #designathon-lndg
- And [compactor] is an app for improving your bitcoin privacy #designathon-compactor
Take a look, ask questions, join the channels if you’re interested. Maybe spread the word if you know someone else who might want to contribute.](https://pbs.twimg.com/media/FegFhLCX0AALfK4?format=png&name=small)
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Conversation
[compactor] is a tool for privately consolidating UTXOs using a shielded sidechain such as zSide.
Watch demo zSide here:
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Problem: you have a bunch of UTXOs in your wallet. Maybe you got them from coinjoining, paynyming, or plain old bitcoining. Eventually you need to make a payment that's bigger than any one UTXO, so you'll need to combine some UTXOs. But doing so can be bad for privacy! What do?
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Solution: [compactor]
[compactor] is an app that consolidates smaller UTXOs into bigger UTXOs without creating any public link between the original UTXOs.
Here's a high level explanation of how it works, along with some wireframes for visuals:
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1. Select the UTXOs in your wallet that you want to consolidate, then deposit the UTXOs into the zSide shielded pool. The app will take care to send the UTXOs one by one at predefined time intervals to avoid timing analysis correlation.
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2. Wait some time while the app consolidates the UTXOs into a single shielded note, in a way that avoids note count correlation.
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3. Import the master pubkey of the bitcoin wallet you want your consolidated UTXOs sent to and select the denominations you want to withdraw. The app will derive one unused address per consolidated UTXO and automatically send the consolidated UTXOs to those addresses one by one.
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4. In the end you will have one or more consolidated UTXOs that are larger than the UTXOs you started with, enabling you to make those larger transactions without creating any public link between the original UTXOs.
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For the bitcoin designathon, I have two main goals and one stretch goal:
1. Finish all of the user journey flows
2. Make some real UI designs (not just wireframes)
Stretch goal: Make a (working? clickable?) frontend GUI
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If you are a UI/UX designer and/or frontend dev and want to help, you can join the project here:
event.bitcoin.design/#project-rec8G
And you can read more about how [compactor] works here:
github.com/john-light/com
Replying to
1. Does this work as a personal coin join
2. Is it possible to go from one big UTXO to a bunch of smaller UTXOs and then consolidate to a different big UTXO, while breaking the link between the 2 big UTXOs?
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Replying to
1. it could, sure
2. what is the purpose of breaking the first utxo into a bunch of smaller ones?
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Replying to
Interesting concept but you can always send payment in installments on different addresses to avoid consolidation.
Example: Alice has 2 UTXOs in wallet (0.01 and 0.01), she needs to make a payment of 0.015, Bob shares 2 addresses and Alice sends 0.01 to each with some delay.
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Replying to
you could, but this is not typically how merchant invoice software works. it also turns Bob into a TTP who Alice trusts not to reveal that she made both payments.