I am planning on building a utxo privacy analyzer, where you can select a series of privacy metrics to analyze a transaction by. The result will then say if the utxos included in the transaction passed or failed the various privacy metrics.
A few privacy metrics to watch for I have so far are,
- number of consecutive coinjoin rounds that a utxo came from.
- choose your anonymity set, aka how many txs should look like yours (aka equal output) in a tx.
- No change.
- no small change.
- no reused addresses
- reveal least amount of wealth
- reveal least amount of past tx history, aka don't combine utxos, especially not change outputs.
- don't mix post mixes (or any post mix tx change) from different rounds.
- don't mix postmix (or any post mix tx change) and non mixed.
- reduce change detection
- no round number payments.
- no same script type for the inputs and only one output.
- largest output amount heuristic (this is weak)
- spending to an exchange, it is obvious you are the change
- break the unnecessary input heuristic.
- more than one change output.
- change output should be of similar size of payment
- no dust attacked coins.
- break the common input ownership heuristic.
- break volume or other pattern recognition analysise.
- the change should not always be in the same output position.
- timing analysis, make sure you are not always receiving transactions on the same day.
- make sure do not spend utxos are not spent
- no kyc coins.
Does that sound like a useful tool to you?