Re: [Bitcoin-development] Block Size Increase

2015-05-07 Thread Gavin Costin
Can anyone opposed to this proposal articulate in plain english the worst
case scenario(s) if it goes ahead?

Some people in the conversation appear to be uncomfortable, perturbed,
defensive etc about the proposal Š. But I am not seeing specifics on why it
is not a feasible plan.

From:  Mike Hearn m...@plan99.net
Date:  Friday, 8 May, 2015 2:06 am
To:  Btc Drak btcd...@gmail.com
Cc:  Bitcoin Dev bitcoin-development@lists.sourceforge.net
Subject:  Re: [Bitcoin-development] Block Size Increase

 I think you are rubbing against your own presupposition that people must find
 and alternative right now. Quite a lot here do not believe there is any
 urgency, nor that there is an immanent problem that has to be solved before
 the sky falls in.

I have explained why I believe there is some urgency, whereby some urgency
I mean, assuming it takes months to implement, merge, test, release and for
people to upgrade.

But if it makes you happy, imagine that this discussion happens all over
again next year and I ask the same question.


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Re: [Bitcoin-development] Bitcoin difficulty sanity check suggestion

2013-12-23 Thread Gavin Costin
Ryan,

Maybe you could test out your ideas somewhere like bitcointalk.org and/or 
provide some more technical substance before engaging with this forum.

Developers tend to prefer dealing with numbers known to be either 1 or 0, not a 
variable set of possible values depending on non-technical factors ...

Gavin

 On 24/12/2013, at 15:42, Ryan Carboni ryan.jc...@gmail.com wrote:
 
 Maybe it's because the arguments being presented are nonsensical and 
 irrelevant to the current Bitcoin network topology, composed of a small 
 number of mining pools, not solo miners? Furthermore I think people would 
 realize that their mining pool has gone off the reservation so to speak.
 
 
 On Mon, Dec 23, 2013 at 8:05 PM, Allen Piscitello 
 allen.piscite...@gmail.com wrote:
 Ryan,
 
 Why do you continue to try to correct people who clearly have put more 
 thought into this than you?  Everyone understood you just fine, you just 
 seem to have trouble comprehending why your ideas are terrible.
 
 
 On Mon, Dec 23, 2013 at 7:51 PM, Ryan Carboni ryan.jc...@gmail.com wrote:
 I think you misunderstood my statement. If time  3 days, and after 4 
 blocks have been mined, then difficulty would be reset.
 
 In theory, one would have to isolate roughly one percent of the Bitcoin 
 network's hashing power to do so. Which would indicate an attack by a state 
 actor as opposed to anything else. Arguably, the safest way to run Bitcoin 
 is through a proprietary dial-up network.
 
 
 On Sun, Dec 22, 2013 at 7:22 PM, Mark Friedenbach m...@monetize.io wrote:
 
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1
 
 Ryan, these sort of adjustments introduce security risks. If you were
 isolated from the main chain by a low-hashpower attacker, how would
 you know? They'd need just three days without you noticing that
 network block generation has stalled - maybe they wait for a long
 weekend - then after that the block rate is normal but completely
 controlled by the attacker (and isolated from mainnet).
 
 There are fast acting alternative difficulty adjustment algorithms
 being explored by some alts, such as the 9-block interval, 144-block
 window, Parks-McClellan FIR filter used by Freicoin to recover from
 just such a mining bubble. If it were to happen to bitcoin, there
 would be sophisticated alternative to turn to, and enough time to make
 the change.
 
 On 12/22/2013 07:10 PM, Ryan Carboni wrote:
  I think Bitcoin should have a sanity check: after three days if
  only four blocks have been mined, difficulty should be adjusted
  downwards.
 
  This might become important in the near future. I project a
  Bitcoin mining bubble.
 
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