Very nice.
Please always remember

LBC: 100 Mkeys/s = 200 Maddresses/s
oclvanitygen: 270 Mkeys/s = 270 Maddresses/s (only compressed)

edit:

theoretically, you could distribute the load to your GPUs 3x 10 (or 10+11+11) and let one do other mining stuff.
4 x 64% = ~ 256% -> 144% spare capacity so one full GPU for sure.

I thought about exactly such a configuration (4 x 1080, but Skylake-EX core to feed the GPUs, should come close to 200 Mkeys/s)


Rico

Thx a lot!

I will use my Radeon GPU as soon as a Windows client or a LBC-Appliance with Radeon GPU support is released.

Have a nice day,
Janu$$

Speed is even higher right now ...

Countdown to #51 ...

got more Gkeys generated than the whole pool combined

I think that if oclvanitygen computes 270 Maddress/s, that means that it computes only 135M of x-coordinates (x = coordinates of points of the curve that represent the public keys) and not even a single y-coordinate.
Then the strings: "02x" and "03x" produce 2 addresses ( 2 for each x):

"02x" --> compressed public key
"03x" --> compressed public key


Current LBC generator computes 100 Mkey/s, that means that it computes 100M of x-coordinates + 100M of y-coordinates, then

"04xy" --> uncompressed public key
"02 or 03x" --> compressed public key

Total: 200 Maddresses/s.

Potentially our generator could computes other 2 addresses (not in the same time) from the same x/y, because there are other 2 points related to the same x,y coordinates:

"04x(-y)"  --> uncompressed public key
"03x 02x" --> compressed public key

Note: sha256 should take half time if only applied to strings like "02x" or "03x" (only 256bit) respect of "04xy" (more than 512 bit).
That's why oclvanitygen seems faster than LBC.

Essentially the cost of compute an uncompressed public key is higher than that related to compressed key (because of y and because of sha256)

Just yesterday I have thrown the pleiades source code from my Sandbox (I have it still in the repository though), because
with the arulbero-EC arithmetics and my GPU hash160 implementation we have something better.

Having said that, both the KNL as well as the Skylake-EX with their AVX512 engines are a hell of a machine for EC arithmetics.
If anyone has these processors, I can provide a generator binary.
So if anyone is looking for a dedicated machine with quite some key generation performance:

KNL + GPUs (probably too expensive) or Skylake-EX + GPUs (less expensive, but still some bucks)

With these we're getting in the region of 100s of Mkeys/s per machine.


Rico

Hi,

I read a bit about this project at lbc.cryptoguru.org and (addressing anybody and everybody who is doing this) I have a few questions:

1. The "About" section claims that the reason "why" is because somebody said it wasn't possible. That certainly makes sense but once the first "collision" was found the point was proven and there is nothing to prove anymore so why keep going?

2. If a "collision" is found the amount (if any) is "misplaced" (i.e. stolen) into so-called custodial address. The reason for that is because when the discovery is announced somebody else could quickly find the same and steal it. And the reason why the discovery is announced in the first place is.. to prove the point that has already been proven? Again, why this whole thing still keeps going? To prove the point was a valid and perfectly understandable reason. What valid reason is there now?

3. The webpages are full of "rightful owner" this, "rightful ownership" that, but how is this rightful owner supposed to find out about what really happened, i.e. that they in fact weren't robbed, they were just "robbed"? Assuming that every owner of bitcoins in the whole world will somehow magically become aware of some random thread at some random Internet forum and from now on will be anxiously reading it every day for the rest of their lives is just insane. From their point of view their bitcoins were stolen, end of story.
Now this is somewhat an uncharted territory but the same way as manufacturing, sale etc. of some weapons is illegal, and also developing and distributing of software to circumvent copy protection schemes (cracks) is in some jurisdictions illegal, it's not unreasonable to imagine that this software might be deemed illegal in some jurisdictions as well and everybody participating (abetting) might face criminal prosecution. So yet again, since the original goal was already reached is it really worth it to keep going and risk all the possible repercussions?

4. So far only empty or almost empty addresses have been found but what will happen when some reasonable amount (hundreds or thousands BTC) is found? Will the "announcing" and "misplacing" happen again? If somebody has such an amount in one address they are either stupid or they have many similarly loaded addresses. If the latter is the case then aren't you afraid what may happen to you and your dear ones if you piss off the wrong people? I don't see it entirely unrealistic if some angry criminals tracked you down and murdered you and your whole family, and they will most certainly not care one single bit about your "proving the point", "custodial address" etc. bullshit. Internet is not as anonymous as you might think. Is it really worth it to keep doing something that doesn't have any upside, only many downsides?
Maybe you don't value your own life but do you really have the right to put other innocent human beings in grave danger? Maybe you don't have any family, maybe you don't have any friends, but those murderers won't really investigate your personal life, they will just murder you and whoever will be near you at the moment. To make an example of you, to discourage others. Sure the probability of this happening is very low but so is the probability of being shot by a stray bullet, dying in a car/train/airplane fatal accident etc. etc., and yet all those things happen to people on daily basis.

5. When you get a hit do you also test derived addresses, i.e. assuming what you just found might be the top of a HD tree? Since the hit frequency seems to be quite low the slowdown would be negligible.

They've found nothing. You're not allowed to ask such questions. If he sounds like a jerk he probably is a jerk. It's fun to watch how these jerks burn their money. Only interesting thing here is who is funding this "project"?

Do we know for sure that there is a key for each bit?

I think we need to have another control (and incentive) system for our work. We cannot run for weeks and get at this point with the doubt that we have lost (in some way) a key.

EDIT: for example, how do you know (and I know) that I made effectively a search between keys "a and b"?  What is the proof of my work?

I read that pages, but I don't understand what kind of "proof of work" we are talking about.

I mean: I'm interested in a "proof of correct work". This kind of proof needs not only to you, but to everyone is running this client.
My incentive is: I'm sure that I (and we all) are working in the correct way.

My question is: do you check in some way that my work is correct or you check only that I run your code without tampering? It is different.

For example incentive firework from SlarkBoy is good as a control system too. And money is not even necessary to perform this kind of control.


We are searching for something extremely rare. So sentences like:

"I do trust the LBC codebase"
"anyone with attention deficit hyperactivity disorder would be in the wrong place here"

are not soothing to me 

Probably I'm only frustrated, I would really be sorry if we don't hit #51