Topic: [ANN] [HVC] Heavycoin - Ultra-secure, Decentralized Block Reward Voting, Fast - page 202. (Read 542277 times)

Long-term investing..    Shit I have been holding gold for a decade, still havent sold it all.

i don't care what color it is. i just want to see increases.

I hope everyone reads this. It is perfectly feasible for HVC to hit 10k sat very quickly. Why not hold off for a day or two from dumping and let it reach 10k sat? People will remain hesitant to buy HVC if they keep seeing the huge dumps. pumps encourage buying but dumping this early on will only hurt the coin.

A fast run up in such a short space of time will kill the coin for months.

Who thinks we should have an Orange H HeavyCoin logo on CoinMarketCap? Makes it way more visible and appealing.

How bout keep you keep selling me more below 6500? I'm game.

Hasn't even been a week, have patience.

I'll give you a skyrocket princess

Congrats to all you dumpers ruining a run up to 8000. Just so you can satisfy small short term gains and rebuy. Shit like that makes me not want to support this community. I mean who fucks up the chances of their own coin skyrocketing for a couple $?

Yeah well apart from the IPO, I thought this coin was worth something. Plus there is a logo competition and I like those. Still 99% in DRK - it's got that special something.

Oh my god my hashrate i'm so aroused right now I have an erection and i'm taking pics male 22 get in touch

Moved over my 1MH/s from 1GH to hvc.nonce-pool.com, gaining a little speed increase as well.
-v 1 on all miners of course. Not planning to sell anything either. This one is a keeper.

Some stats @http://hvc.nonce-pool.com:
Intel Q6600 Windows ~64kh/s
Intel i3-2100 Windows ~86kh/s
Intel X3450 Linux ~72kh/s
Intel E3-1230v2 Linux ~184kh/s

incidentally this is how I will be dancing soon .

http://www.youtube.com/watch?v=ZPO6dOPxmr8

Very nice.  Cool to see you around this thread also, normally on the Darkcoin thread

Set my sell at exactly the peak. Feelsgood.jpg , buying back lower.

well that was a nice little spike on mintpal, the madness is over now though, it will go down a bit for a while, the sell orders outnumber the buys now.

This is how I will be dancing soon:

http://vimeo.com/6971656

Thanks for your post.  It's actually very good to discuss these details.


You've not given any details or reasons for coming to this conclusion.


Of course changing one bit should randomize the output of a cryptographic hash function.  That's a well known property of any secure cryptographic hash function, but your reference to this fact doesn't have anything to do with our statement.

Quark's multi-hashing strategy is to chain functions together.  It is known that chaining functions together, eg. H1(H2(...(Hn(x)))), does not improve collision resistance.  A collision in Hn(x) trivially leads to a collision in the entire chain.  This is algebraically visible in the definition of the chained function.

If this is still unclear, then consider a simple example.  Suppose we have a combined cryptographic hash function F composed of a chain of two cryptographic hash functions H1 and H2.

F(x) = H1(H2(x))

We will show that a collision in H2 leads to a collision in F.
First, assume we have a collision in H2.  Thus, by definition, we have two blocks w and x such that H2(w) = H2(x) = y.  Thus, we have

F(w) = H1(H2(w)) and F(x) = H1(H2(x)),

which is equal to

F(w) = H1(y) and F(x) = H1(y).

Uh-oh, H1(y) = H1(y) = z, so we have

F(w) = z and F(x) = z.

So

F(w) = F(x) = z.

Thus, for inputs w and x the chained function F also collides.  This is true for any collision in H2 and any length chain of functions.

So chaining functions together does nothing for collisions.  What else can be done?  One approach is to concatenate the outputs, interleave the bits and trim it down to 256-bits.  There's plenty of accessible info on this topic available, for example Guarding against cryptanalytic breakthroughs: combining multiple hash functions


So if 192-bits of SHA256 are cracked, then SHA-256 is also useless.  What outcome is more likely due to advances in cryptanalysis over the next 10 years?  Will it be that SHA-256 is weakened OR will it be that 3 out of 4 of SHA-256, Keccak-512, Grøestl-512 and BLAKE-512 are weakened?  We think the prior is more likely.

As you know, there are often tradeoffs in security.  For example, if you desire resistance to preimage attacks, then you might trade some resistance to collision attacks, or vice versa.  Heavycoin's overall approach is "not to put all the eggs in the same basket" in terms of collisions and second-preimage resistance.  Other models could prioritize other security properties.

It's widely accepted that the collision resistance of cryptographic hash functions changes over time as cryptanalysis improves, the so-called Lifetime of cryptographic hash functions.  Also, some fear that entities (eg. NSA) could have more knowledge, control and influence over cryptographic advances than expected.  As an example, the US government certainly does fund quiet a bit of research carried out in academia.  Also, the Snowden leaks seem to indicate the NSA has acted to influence the design of weaker cryptography.  These point are debatable, and there are too many annoying conspiracy theorists.  Regardless, our philosophy is to treat everything with (a reasonable amount of) suspicion, even algorithms and practices that are currently considered to be "safe".  Thus, let's not rely on a single cryptographic hash function.

In terms of combining cryptographic hash functions, there doesn't seem to be perfect solution.  Nevertheless, Heavycoin tries to adopt a sensible method with the hope of "slowing down" the weakening of its hash algorithms over time (see Lifetime... above).  There is a prophetic post by Satoshi on this topic, where he speaks about what could be done if a "hash breakdown came gradually".   Heavycoin's philosophy is to try to increase the likelihood that such a "breakdown" would be as gradual as possible.  There are different ways to achieve this goal, but there is no perfect solution and each has different advantages and disadvantages.  Heavycoin has chosen a concatenation/interleaving approach, whereas Quark has selected a function chaining approach.

i think so. devs should release sw to more pools and ask people to existing pools.

nonce-pool is doing well and finding blocks regularly.
zhpool is gaining hashrate.