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Scaling Bitcoin Workshops - Transcripts

Authors who seek to submit their works to journals may opt-out by publishing an extended abstract only. Short papers 8 pages or less including references and appendices are also welcome and should be submitted with " short paper " in the title. All submissions will be reviewed double-blind, and as such, must be anonymous, with no author names, affiliations, acknowledgements, or obvious references.

Home Call For Papers Program. Call for Papers The success of Bitcoin and subsequent decentralized cryptographic currencies has led to fascinating research in multiple venues, including top security conferences, legal journals, and reports of international financial organizations.

This workshop aims to bring together interested scholars from all relevant disciplines who study cryptographic currencies and their surrounding ecosystems. Suggested topics include but are not limited to empirical and theoretical studies of: The Bitcoin protocol and extensions cryptography, scripting language etc. We see this a lot. This is dependent on when the next block arrives. But even if you underestimate, youcan use replace-by-fee to just fix it.

It's interesting, but the mempool optimization can be gamed. We can say look at hte mempool, look at the weight, just divide by 4 million and then we know how many blocks until our transaction can be confirmed. Your tx will be mined in about 60 minutes If the amount of time to wait is higher than we want to wait, then we might as well use replace-by-fee immediately. These results are not showing the fee, but the amount of fee rate overpaid to get into the block.

The results are showing that there's-- there's four modes. Conservative, non-conservative economic, those are the blue lines here. And then there's the optimized version with mempool optimization for both of those modes. You can see that the mempool The idea is zero for this chart by the way, because you don't want to overestimate.

There are some areas where the optimized version is doing a lot better estimation in terms of overpayment than the other two. And this other chart is showing.. When you underestimate and you make a tx where you want the time to be 1 block, and you need about , estimations for a number of blocks.

So there's.. Even in just case, just waiting 1 extra block, you drop down to, conservative and non-conservative are both already mined already. You are down to like , and oyu can keep going into the blocks and by 10 blocks you have about 11 tx left, it's maybe time to do replace-by-fee bumping.

You should be using replace-by-fee, especially if you are using this kind of optimization. Replace-by-fee has been around since v0. It has become easier with v0. Later on you can bump the fee by increasing inputs or something with a higher fee rate, and the old transaction will be thrown out by everyone and the new one will replace it. You can estimate the fee delta for your optimized transaction using this method. You can bump your transaction as much as you want, there's no limit on how much you can do this.

You take the sum of all the transactions aboe your fee rate and you subtract from it hte block weight and time. And then if you are below there, you're good. You could be bumped up still if someone is adding transactions, but at this time, you're still getting If you are 1 and 0 you most definitely hae to wait longer, s maybe just bump it immediately.

We can figure out the exact fee we need, at least for this point in time, and this all changes as time goes on. We can take all the transactions in the mempool, the top is the most aluable highest fee rate, we order them on down, then we take 4 billion times our t and hten we go up a bit and then we hae a fee rate and we need to be below that, and we can find this delta for the fee very precisely for the current time point.

We can do this repeatedly, like every second or something. We can either keep fee bumping, or we hae some threshold and we just wait longer than we wanted. Assume that we hae a threshold and the bump estimator

Scaling Bitcoin workshop : Stanford 2017 Program Chairs

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