yeah, that was what i was thinking... i already have a broad distribution, i'm going to explore how to make this happen more automatically
i can imagine a coin control system that automatically generates change addresses in this way for you so that your coin selection is always mixed up and it prefers the oldest ones for new transactions
i have to think more about how this would work in the simplest way
a simple algorithm is hard to break and has the best chance of becoming standardised across implementations, so, a coin selection algorithm that is simple and increases privacy would probably get adopted
i have a lot of visual thoughts about how these things work exactly, the famous japanese artist who is making 3d prints visualising them, this is the linear map of them but not the size, the same distribution pattern in users own wallets i think would be a huge boost in privacy, especially if it aims to create the most tenuous locality possible - by trying to use the oldest UTXOs always and trying to avoid numbers of change outputs, it's a fun puzzle to think over, how to make wallets by default be harder to chainanalyse
Absolutely, those are great ideas, we definitely need more apps tackling these problems.
Wallet fingerprinting is a big goal of chain analyze so having more privacy related standardization in wallets to protect against that would be super helpful.
I plan on trying to add a "Transaction Privacy Analyzer" to Live Wallet to help highlight the potential privacy issues in a bitcoin transaction, hopefully catching some of these errors before the transaction is broadcast. I noted about it recently here
https://primal.net/e/note1xe2vq6sz83htekmt07f3j039vg2g6lp7pn0z0sjn6u9w3lg0628qvkz2sr
i know how to build a wallet server, have worked a lot with btcd
building something that does much what i design is something i could definitely do and help facilitate an isolation between UI and coin control/wallet services so we divide our labor more efficiently
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