Hello intrigeri, Michael, intrigeri wrote: > Hi Michael, > > Michael English: >> It also helps to reduce blockchain UTXO (unspent transaction >> outputs) bloat, > > This makes me curious. How does this help with that property, exactly? > My intuition tells me that by restricting the set of coins that can be > spent to one single address, on the contrary, the software has fewer > possibilities to optimize towards 1. reusing existing unspent outputs; > and thus 2. avoiding to create more. > > Also: where was this text quoted from? >
The text was copied from Electrum man page. The privacy coin chooser will not offer 100% anonymity, because that's technically not possible in a system using a public blockchain, but it will obfuscate information about sender's total BTC holdings so it's a plus. UTXO's are basically the coins you can spend. The spendable coins are in UTXO's, not in addresses. Addresses are just a smart crypto way to let the world know in advance who has the right to spend a given UTXO. Existing unspent outputs cannot be reused, they are burned and re-crated entirely every time. So you cannot spend part of a UTXO, you spend it all (practice does not recommend re-using addresses - it's true nothing keeps you from receiving the change in the same initial address that you spent from, but you'll have a different UTXO). >> Routing transaction relay through Tor is only part of the solution. The >> blockchain is >> a public ledger that can be analyzed anytime after the initial transaction >> broadcast. >> Private coin selection impedes correlation of transaction inputs and outputs >> that >> could link back to an identity. > > Sure. I hope our doc clearly states that it's very hard to use Bitcoin > in a privacy-preserving way, for some various value of "privacy". > Agreed, but the setting indicated by Michael could be shipped as a default imho. It makes sense in a context like Tails/Tor threat model.
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Tails-dev mailing list [email protected] https://mailman.boum.org/listinfo/tails-dev To unsubscribe from this list, send an empty email to [email protected].
