sipa changed the topic of #bitcoin-wizards to: This channel is for discussing theoretical ideas with regard to cryptocurrencies, not about short-term Bitcoin development | http://bitcoin.ninja/ | This channel is logged. | For logs and more information, visit http://bitcoin.ninja
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<kanzure> "Bitcoin coin selection with leverage" https://arxiv.org/pdf/1911.01330.pdf
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<harding> I don't quite get that "coin selection with leverage" paper. IIUC, the basic idea seems to be that you have two payment requests; you attempt to generate a changeless transaction to fulfill the first request and store whichever attempt produces a change output nearest the value of the second payment request. That way, if you fail to generate a changeless transaction for the first request, you can at least ensure that you generate
<harding> a changeless transaction for the second request by sending the saved near-match. That seems smart, but I would think the spender would save money by just batching the two payment requests into the same transaction, since that would eliminate the overhead of a second transaction and since they already found a set of inputs whose amounts equal the total desired payout amounts (including fees).
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<waxwing> i would write comments here but i already did at the end of the gist
<waxwing> 'do a coinswap but one side's payment is miner fees so history is destroyed' is i think the TLDR
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