Add StrainBIT to the list, same claims word for word and same address. Dont fall for this bs guys!

This seems like a noobish question but, with the scp256k1 curve, what is the formula for calculating the Galois field?

The bitcoin wiki gives the paramaters for the curve, but I haven't been able to find a formula for how the parameters interact.

Any extra reading materials would also be helpful.

The way I see it, Bcu1525's are really cheap right now (over %50 off retail). As soon as good bitstreams hit the market all of the Bcu1525's and cvp's will be bought up and the price will rise again. If your the patient type, like I am, then you can actually save quite a bit of money getting your hardware now, rather than later.

I, like whitefire, can program the fpga's, making the hardware I have much more useful, even when it cant currently be mining with decent figures. Like bitcoin investing, it's a speculation and waiting game.

Again apologies for the bump of this old thread.

I found an open source schematic for a pcie riser that provides full x16 bandwidth in 4 connectors with x4 lanes each. Link if you are interested:

https://github.com/kotproger/CPR

(Sorry for the bump, Smoke doesn't allow newbie pms)

Hey Smoke,

Was wondering if you ever found/made a good pcie riser schematic. I'm looking for a beefed up riser that has x16 bandwidth and isolates power to at least 2x 6pin connectors. I looked around, but I haven't had any luck so far, probably have to make custom pcb and/or solder it myself. You mentioned wanting to experiment with different cables and various improvements on the design, so I thought I'd check if anything came of it.

Thanks for your time.

Odd, thought for sure that it was. Anyway, the other points  are still valid.

Checked out the first link, lot of good information here but the intro started out rough with poor flow, grammar and spelling issues. Later in the article it got better, but still seemed like it was a bit disorganized, not knowing whether is was going to be a factual report or hype for the card. It also seemed a bit long to me, not sure if that is raw length or a problem keeping the attention of the reader.

Sorry for the hyper critical review, but you asked for my opinion lol.

So 1: LBC started before the puzzle wallets where a thing.
And 2: The puzzle wallets have nothing to do with LBC's goals, they are just a nice bonus along the way.

Bitcrack on the other hand was made specifically to find the puzzle wallets, and so far it seems off to an excellent start. LBC is currently searching a space in which it will not find the next puzzle wallet, only an empty one that bitcrack already cleared.

The reason is bitcrack is 'only' searching for the puzzle wallets, while LBC is looking for 'any' wallet with a balance, including the puzzle wallets.

Actually there are a substantial amount of lost wallets that have spends, the trick is even with having the pub key the numbers are still not practical. It would essentially be another LBC, finishes cracking 1 wallet when bitcoin is long gone or when people lose interest and stop cracking.

I'd have to say that becoin is right on this one, finding a vulnerability is not actually LBC's objective. LBC's objective is to "find a collision in which 2 different private keys go to the same wallet" that's it. Will this break bitcoin? No, but it will be a proof of concept that bitcoin is not as secure as most people think it is.

(And yes, advanced mathematics. Seemed like an easier explanation then starting off on a tangent about bloom filters)

Actually the pub key can be calculated into the private key, and it is exponentially faster than bruteforcing, but vanitygen doesn't have that functionality and likely never will. (Eg discussion for another thread)


Sadly it is not possible, the public key is only revealed after at least 1 spend from the wallet. In the case of puzzle wallets, that 1 spent consists of the entire balance the majority of the time.

To my knowledge the only keys with non-zero where the few puzzle wallets that bitcrack found ahead of LBC. At current prices that same .54 BTC would be roughly $1500 USD. Not bad haul, but I'd definitely wait for the market to go back up before cashing out


LBC has a list of all wallets with non-zero balance that it checks against. Through some advanced mathematics LBC is able to check this list of several million addresses all at once at only a slightly slower rate than if it checked against a single address.


LBC is not down and not being deleted any time soon, currently collectively hashing at 268.62 Mkeys/sec. If you are having problems setting it up on your machine feel free to ask questions here or on the discord server.

Ah, that makes a lot more sense. I know I haven't been around much, but it seems to me like this needs to be made clearer for new users.

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+1 for that link, that needs to be added to the "Newbies - Read before posting" thread. (If it isn't already and I just missed it lol)

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Is there any way to check the "time" (eg activity periods you posted it) you currently have? (Other than getting a bunch of posts till your activity stops climbing)

Hey all, just trying to figure out how to earn ranks on this forum. As per the rules rank requires "Activity" and "Merit". Merit is given by users that have it or by "Merit Source" users.

Activity on the other hand is "activity = min(time * 14, posts)" which at first glance looks like a formula but then you notice that  "min" seems like a function that doesn't do anything, there is no unit of time given and "," is not a mathematical symbol as far as I can tell.

So how is activity calculated then?

Thanks for your time.

No worries, bitcoin would never reach $0.00 or even $0.10, because if it did I would just buy it all

Count me in, granted I have little experience in vhdl and verilog looks like a foreign language to me. Still, with a codebase to start on and a card to test designs, definitely seems worthwhile.

Also, sent you a PM a few days ago, don't know if you saw it. Your inbox is probably flooded lol

Thanks, it looks awesome.

Looking for an efficient air duct design, any luck on a redesign of yours or maybe you could point me to someone?

Has the Bridgelink released yet? Link?

At this point it is planning stages, gauging interest, if nobody else wants to crowd fund a card then I will probably get a bridgelink and start mining that way. What is the current ROI on a BCU1525? I saw a post a few pages back offering a few no ram versions for $3350 each.



You can find videos on the first few pages of this thread as well as on the Zetheron website here: http://zetheron.com/index.php/downloads/




Any updates on this, pics of it in use? The links are dead.

Quite so! If you read it again you will see that first I asked if one of these "Crowd Funding Buys" even existed, then if not I would be willing to start one. And yes, I realise that my post count is not in the thousands and that basically nobody here knows me. Didn't seem like a reason not to offer something that could open the doors of FPGA mining to a lot of people.

The way I see it, there are people here who would like to FPGA mine but either don't have thousands to invest in a card right now or think it is too risky for that kind of investment. What I propose is a lower entry point. If you are saving up to get a card, why not collaborate with others who are doing the same? So instead of money sitting under the mattress, it is actually mining and making money back.

Potentially, you could invest a couple hundred, instead of thousands, and then in a few years be able to get a dedicated card at a fraction of the price. (Re-investing any coins mined back into the system and letting them just grow there till you can get a dedicated card.) Or, you could keep adding more money as you have it till you can get a dedicated card, plus whatever coins you mined in the meantime. (Or get a dedicated card faster using the coins)

Risk: Trust a "Noob"
Reward: The ability to risk less money and still try FPGA mining or possibly to put money to work that would otherwise be sitting idle as you saved up for a card.

If you feel the need to bail after the card/s are bought, no problem! I, or we collectively will buy your shares of the card and you get your money back.