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
<MaxSan> you would need an actual data set though to read over historical events from all the block tips.. from both chains..
<andytoshi> as i said, good luck :). you've got much different time periods, then the block intervals are different, and even serious fork lengths pale in comparison to the total timeframe
<MaxSan> which isnt an easy task esp for ethereum
<andytoshi> and yeah, idk if anybody has all the necessary data
<MaxSan> im going to guess no :P
<stonecoldpat> I was hoping the soft/hard fork icon would represent "activation day" and then I was using "accidental split" if there was a consequence - although in the case of thedao that isn't accidental.
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<andytoshi> maybe you could represent hardforks as a change in the graph direction whereas softforks widen it (indicating there are extra things you can do, though if you wanna keep going straight ahead nobody is stopping you)
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<zaus> what do people think of systems like algorand or snow white?
<Taek> They can be innovative in terms of traditional consensus but seem to lack a deeper understanding of Bitcoin's incentive model
<Taek> and therefore get lost talking about things like "percentage of honest participants", when that's shallow and incomplete security assumption
<zaus> is it because they are phrased in PoS settings?
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<zaus> Taek: ^
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<Taek> I think it's because the authors come from an academic background, and Bitcoin's incentive model doesn't have any base in background
<Taek> so they use the academic version of consensus as the base, and completely miss the incentive stuff
<Taek> *there's no academic base exploring Bitcoin's incentive model
<zaus> thanks
<bsm1175321> If your security model involves the word "trust", you're fucked from the get-go. Everyone can be bribed. Bitcoin makes that incentive very explicit.
<bsm1175321> Virtually all academic literature assumes *something* that cannot be bribed, and is therefore, deeply flawed for real-world applications.
<zaus> bsm117532: I think bitcoin assumes that 50% of the power cannot be bribed
<bsm1175321> That 50% has an existing economic incentive. Your bribe has to be bigger.
<zaus> bsm117532: same for proof of stake systems
<bsm1175321> Your argument is circular, since the bribe is internal to the system.
<bsm1175321> You can't bribe with more money than exists in the system. You CAN bribe with external assets.
<bsm1175321> PoS is a closed system -- there's no flow of value into the system.
<gmaxwell> zaus: have you read the PoS paper on bitcoin.ninja?
<gmaxwell> if not, go do that, it's not that long, and you'll save people here a bunch of time rehasing arguments that have been rehashed 1001 times already.
<zaus> I have read a few PoS paper but I am not sure which one you refer to
* bsm1175321 is really fucking tired of PoS and wishes it would just die and go away.
<zaus> will look into this
<zaus> alright, if the problem is the internal fixed currency - then what if we peg PoS strategy with external resources
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<bsm1175321> pegs are very difficult to implement in practice and have a number of real failure modes.
<zaus> so for example, one could build Algorand/SnowWhite introducing new resources in the system
<bsm1175321> If one asset spikes, the peg fails if there aren't enough assets of the other type to cover.
<bsm1175321> What is this "resource"?
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<midnightmagic> bsm1175321: <3 (re PoS)
<zaus> bsm117532: I am not sure, whatever is provable
<zaus> storage (?)
<bsm1175321> The only provable, economic asset is a brute-forced hash function. A second example has not been provided yet. (Though many are hopeful that storage will be the second example)
<zaus> energy (? not sure)
<zaus> I see
<bsm1175321> The brute forced hash function is a proxy for energy
<bsm1175321> Anything else is just bits, and has zero marginal cost.
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<hellothere> hey guys, is there a way to get the BIP44 path of a specific address hash, assuming I have the xpub?
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<hellothere> (wrong channel I think, sorry)
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<andytoshi> it's borderline -wizards, the question is whether you can preimage a hash, and the answer is no :)
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<tromp__> unless P=NP :-)
<nsh> only for large cardinals who adhere to the antipope
<nsh> (log-bot been having connection issues, looking at https://botbot.me/freenode/bitcoin-wizards/)
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<nsh> ty
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<adiabat> hellothere: if it's like m/44/0/0/5 or something, you can try guessing it
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<adiabat> iterate through commonly used bip44 derivation paths from the xpub and see if there's a match. For most wallets that could work.
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<luke-jr> andytoshi: https://github.com/opentimestamps/python-opentimestamps/issues/12 I'm just waiting for libsecp256k1 to support sign-to-contract before adding non-spammy proof-of-existence to Knots..
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<andytoshi> luke-jr: it does actually, the signing function takes a nonce-computing function...usually this is NULL meaning "just use rfc6979" but you can provide a different one that hashes in aux data
<andytoshi> hm, maybe i should PR to put one in that does sign-to-contract so there's something halfway standard in place
<gmaxwell> thats not sign to contract.
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<gmaxwell> sign to contract needs to use the auxdata to take a struct that can return the underlying nonce.
<gmaxwell> I think I've implemented it at least twice, but the structure of the code is such that it's kinda slow so I'm not happy with it.
<andytoshi> gmaxwell: if i write a function that does rfc6979, computes the corresponding public nonce, hashes that with aux data, and adds the hash to the result of 6979 before returning, isn't that sign-to-contract?
<gmaxwell> (the problem is that the nonce function returns K ... not Kinv and kG. which means you need to do multiple multiplies for no real reason...)
<andytoshi> ohh i see
<andytoshi> yeah, you need the original nonce
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