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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<Taek>
aoeu: ethereum lacks the strong security, review, stability, paranoia, and decentralization that Bitcoin has
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<runeks>
Is there a CHECKLOCKTIME (no VERIFY) that just puts a 1 on the stack if the timestamp hasn't been passed, and a 0 otherwise?
<sipa>
there are no opcodes that can observe the timestamp, by design
<sipa>
they can only observe the nLockTime field of the spending transaction
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<runeks>
Oh, I see. Then it makes perfect sense. Thanks.
<runeks>
And I see now how it would be problematic to have script whose result depends on what time it is. Good thing I'm not designing opcodes.
<sipa>
there are two problems
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<sipa>
one os that you don't want scripts to depend on the time, or you'd need to revalidate unconfirmed transactions over and over
<sipa>
the other is monotonicity, that a valid transactions can never become unacceptable in a block
<sipa>
otherwise it becomes hard to assess the value of incoming payments
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<sipa>
"this transactions can only be included in blocks that have a prime number as height" would result in less valuable outputs, most likely
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<Guest76863>
hey is there a best reference for the definition of "DMMS"?
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<amiller>
I'm especially interested in a definition of the "unforgeability" analogue to a signature shceme
<andytoshi>
amiller: pos.pdf is the closest thing to a formal definition, and it's not really close
<amiller>
thanks
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<andytoshi>
i recall working on unforgeability for some time but didn't get very far, it's hard even to define a "forgery" and then you have the problem of probabilities
<andytoshi>
i think i scrapped the notion of "forged signature" entirely and was thinking along the lines of it being hard to make _any_ signatures if you had appreciably less computing power than you were claiming you did
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<adlai>
Taek: i think you meant, "eth is not doing bitcoin is doing"
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