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Showing 20 of 438 results by dmatthewstewart
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Board Development & Technical Discussion
Re: New ashigaru whirlpool coordinator can de-anonymize users
by
dmatthewstewart
on 23/06/2025, 23:48:33 UTC
They specifically mention this in their update. And there seems to be a coordinated effort across all platforms by the Wasabi fans to just pump FUD. It’s becoming very cultish.

Maybe you should’ve done your testing before making the post. You make a conclusion in your title that has not yet been tested.

Post
Topic
Board Development & Technical Discussion
Re: New ashigaru whirlpool coordinator can de-anonymize users
by
dmatthewstewart
on 23/06/2025, 23:45:57 UTC
Ashigaru announcement: https://ashigaru.rs/news/announcement-whirlpool/



Background: Nothingmuch had reported a vulnerability in whirlpool in December 2024: https://groups.google.com/g/bitcoindev/c/CbfbEGozG7c/m/w2B-RRdUCQAJ

This allows a malicious coordinator to link inputs and outputs by providing each input with a unique RSA public key. Since the unblinded signatures are possibly made by different keys, the server can learn the mapping from inputs to outputs.

The blind signing process requires a server or coordinator to share the public key. The highlighted text in the announcement is misleading. I looked at the code in Whirlpool-Client and Whirlpool-Server and found that the vulnerability is not fixed.

Code:

    // generate a secret bordereau. keep it private and register INPUT with blindedBordereau
    // bordereau will be provided with unblindedSignedBordereau to register POSTMIX with another
    // identity
    this.bordereau = ClientUtils.generateBordereau();
    byte[] publicKey = WhirlpoolProtocol.decodeBytes(confirmInputMixStatusNotification.publicKey64);
    RSAKeyParameters serverPublicKey = ClientUtils.publicKeyUnserialize(publicKey);
    this.blindingParams = clientCryptoService.computeBlindingParams(serverPublicKey);

    String mixId = confirmInputMixStatusNotification.mixId;
    String blindedBordereau64 =
        WhirlpoolProtocol.encodeBytes(clientCryptoService.blind(bordereau, blindingParams));
    String userHash = premixHandler.computeUserHash(mixId);
    ConfirmInputRequest confirmInputRequest =
        new ConfirmInputRequest(mixId, blindedBordereau64, userHash);

    confirmedInput = true;
    return confirmInputRequest;
  }


http://ashicodepbnpvslzsl2bz7l2pwrjvajgumgac423pp3y2deprbnzz7id.onion/Ashigaru/Ashigaru-Whirlpool-Client/src/commit/a64bd8b4e0ee8a4cfab03da4565f166d07caa7ec/src/main/java/com/samourai/whirlpool/client/mix/MixProcess.java

Code:

        // register confirming input
        String publicKey64 = WhirlpoolProtocol.encodeBytes(mix.getPublicKey());
        ConfirmInputMixStatusNotification confirmInputMixStatusNotification =
                new ConfirmInputMixStatusNotification(mix.getMixId(), publicKey64);
        mix.registerConfirmingInput(registeredInput);

http://ashicodepbnpvslzsl2bz7l2pwrjvajgumgac423pp3y2deprbnzz7id.onion/Ashigaru/Ashigaru-Whirlpool-Server/src/branch/main/src/main/java/com/samourai/whirlpool/server/services/MixService.java

Conclusion: Users should not trust this centralized coordinator and do their own research before paying 5% coordinator fees.

This is specifically mentioned on their website.

https://ashigaru.rs/news/announcement-whirlpool/

Quote

RSA keys used in the Chaumian blinding are not sent to clients by the coordinator in Ashigaru Whirlpool, as this has the potentiality to be misused by providing each coinjoin participant with a unique key to link inputs to outputs. Whilst we have seen no evidence that this has been exploited in any Zerolink protocols so far, we understand that building trust is paramount for us as a newly established development team.

There is a coordinated effort across all platforms to shit on the Ashiguru update by Wasabi wallet fans. They are becoming a cult. Very sad to see.


Post
Topic
Board Legal
Re: Samourai wallet - what went wrong?
by
dmatthewstewart
on 18/05/2025, 23:52:48 UTC
It would be different if they had actually been in direct communication with oligarchs, which is not the case.

The indictment documents against Samourai state that “KEONNE RODRIGUEZ and WILLIAM LONERGAN HILL, the defendants,
owned, controlled, managed, and supervised Samourai, which was engaged in the business of transferring funds on behalf of the public."
That is not how Whirlpool works but prosecutors are counting on jurors being too ignorant to understand that a non-custodial service does not meet the definition of a money transmitting business.

Right on all points cited (and more)

And the recent revelations that even FinCen said beforehand that they weren't a money transmitter is - or at least should be - a big problem for the prosecution.

I think this topic needs a full, dedicated thread. There's quite a few important pieces in this case that aren't in the thread. Like them or not, if this case is successful we're in a bad spot
Post
Topic
Board Legal
Re: Non-KYC BTC to fiat process
by
dmatthewstewart
on 17/05/2025, 22:36:39 UTC
Buy a luxury watch with the BTC and then sell the watch. A Rolex Day Date (full gold) can be purchased between $15,000-$20,000. Many reputable dealers accept Bitcoin.

You don’t have to explain a piece of jewelry from the 1980s. It’s likely an heirloom and by golly, you didn’t want to sell grandpa’s watch but times are tough.

Anything else is going to be a huge headache. Stay with brands that are easy to sell (Rolex, AP, Patek Philippe). Don’t stray into any other brands.

I know someone that has done this twice in the last couple years. He also has Bitcoin from 9-10 years ago. There’s no reason to enter into KYC. The companies that have your data do not safeguard it. Look at what just happened with Coinbase. And you don’t want to make yourself the target of thugs that WILL kick in your door and torture you. And you don’t even have to be a millionaire either to be targeted.
Post
Topic
Board Bitcoin Discussion
Re: Are we really using crypto as a currency... or just holding it like digital gold
by
dmatthewstewart
on 17/05/2025, 22:24:10 UTC
I’ve been working on an idea for a platform — basically an Amazon-style marketplace where you can buy anything using crypto. Not just NFTs, but actual everyday products.

While building it, I ran into a fundamental question:

💬 Are people even interested in spending their crypto?


I spend crypto every time the opportunity presents itself. Many years ago when this site and Bitcoin was a baby, a project called bitcoinstore dot com launched that sold computers and computer parts. I built my pc that year paying in Bitcoin.

Nowadays, I mostly buy gift cards with Bitcoin, which is then used for things in daily life.

When I tip Internet “content creators” I use XMRchat almost exclusively.

And I buy my ASICS and any mining gear with Bitcoin.

But to answer your question, I do spend my crypto and I also treat it like a long term asset. I have a wallet that I don’t spend from and a wallet that I do.
Post
Topic
Board Development & Technical Discussion
Merits 3 from 3 users
Re: Removing OP_return limits seems like a huge mistake
by
dmatthewstewart
on 10/05/2025, 18:39:03 UTC
⭐ Merited by vapourminer (1) ,NotATether (1) ,JayJuanGee (1)
Concept ACK.

I support removing arbitrary limits on Core.  Sometime, people need to acknowledge that the nature of Bitcoin is to be a permissionless network, where information can be embedded in many forms, and trying to stifle all of them creates more problems than it solves.  For example, the Ordinals could be implemented far more efficiently if certain limits were removed, than by bloating the chain with UTXO dust that will remain unspent forever.

Also, the true reason why people oppose these proposals is because they don't want to see fees skyrocket.  They don't care what's being added in the chain, just as they don't care for every other transaction that is not "data-only".  Opposing the free market from finding innovative and efficient ways to make use of Bitcoin is contrary to the spirit of Bitcoin, and raises concern for the security budget problem.  The more obstacles we place to the way information can be spread, the more we push ourselves towards declining on-chain usage.

But in order for the ones that want to store a lot of info (I consider it spam), they are asking to use my computer to store their information/spam. Nowhere in any instance in society is there a requirement that others may use or abuse your property or use it for reasons you do not want it used.

I haven’t said much over the years because frankly, so many people understand the technical level more than me. But this move pushes us towards centralization. And that is the death spiral. Pretty soon it will require a data center to run core. At that point every small player is priced out of participating. Any chain that allows this always has a high cost and is centralized. Bitcoin will be no different.

I don’t believe I should have to host spam - at a cost nonetheless- in order to use my permissionless money. And just because you can do something, doesn’t mean you should. I can spray paint my car but I don’t want to. Removing this limit means that I have to buy the spray paint for people that want to vandalize my car. I’ve already made the decision that I don’t want my car spray painted. Vandals can go elsewhere and buy their own paint.
Post
Topic
Board Mining (Altcoins)
Re: Intel going to offer ASIC mining chips on Feb 23rd
by
dmatthewstewart
on 07/02/2022, 14:35:35 UTC
It looks like they're getting serious about mining.

https://www.barrons.com/articles/intel-bitcoin-mining-chips-51642617554

Nvidia last year restricted mining capacity on some of its products, but Intel has said that it would place no such restrictions on its GPUs.

So now we understand why LHR became a thing.

It was the set up to try and move some of their customers into a new product line.

And implementing LHR didn’t slow the down the consumption from miners (as likely intended)

Instead, it was an unnecessary tax on a large chunk of their customers.

Thanks for posting this.
Post
Topic
Board Mining (Altcoins)
Re: Toncoin mining
by
dmatthewstewart
on 07/02/2022, 14:24:09 UTC
so i maybe should post that gate.io has a coin called ton. so this is toncoin. toncoin is worth 3 dollars and ton is 3 cents.
thats why i didnt believe it was profitable.
i wasnt being a troll it was a small mistake on my part.
hope it helps others as well

I made this mistake too. And we are not the only ones. I see this same thing all over.

Normal Eth Memory settings and stock core and power. 6900 xt getting 60mh eth and 3.7gh on ton dualmining.

However I am facing pool connection issues every now and then.

I’ve used ton-pool-server-p3agi.ondigitalocean.app linked to @WhalesPoolBot on telegram and I’ve found that to work perfectly. I haven’t had any connection issues and reporting of hashtags is steady too.
Post
Topic
Board Mining (Altcoins)
Re: Altcoins to be mined with a Raspberry Pi 3?
by
dmatthewstewart
on 01/02/2018, 01:06:45 UTC
Seriously, HDD mining with the Pi

Im now debating doing this. I have 2x RasPi 3's and a 2 here that Im doing nothing with. And I was thinking about trying Burst out anyway. WIll be scouring the web now to figure this out
Post
Topic
Board Mining (Altcoins)
Re: Bitmain Antminer A3 earning $500 a day mining SIAcoin . .WHAT?! Results & Stats
by
dmatthewstewart
on 01/02/2018, 00:52:42 UTC
Take a look:

https://siamining.com/stats

looks like all of batch 1 is working now ..  now lets mine and hope not to much baikal giant b's coming up Wink
luckily my a3's arrived at the 17th of january so i roi'd already ..



Giant B's are pointless to point at siacoin imo
https://youtu.be/fB33Om_WON0


So Vosk, whats that Antminer doing today? Looks like 1,000 Sia every 24hrs. Am I doing the math right? Because it looks like a big drop in a week as far as daily earnings. Im prob doing the math wrong
Post
Topic
Board Mining (Altcoins)
Re: Upgrading my nining from 4 GPUs (all GTX 1070)
by
dmatthewstewart
on 01/02/2018, 00:47:07 UTC
Hey man,

I just built an nvidia rig. All 1060s. And one of them died within seconds. So I have a 1070 in its place. The rig runs fine with no issues. Ive also done a really mixed card rig on AMD before with a 290x, a few RX 4/500's, and a Vega 64. That rig had some stability issues. But the mixed card rig on nvidia that I just built hasnt had a problem at all.

Any idea of where youre going to buy the cards?

-DMS
Post
Topic
Board Mining (Altcoins)
Re: i am literally thinking about renting a cheaper apt to continue mining
by
dmatthewstewart
on 31/01/2018, 23:52:08 UTC
You literally gave zero details. How is anyone supposed to reply to this?

"YES GO FOR IT" ?

That is the correct response
Post
Topic
Board Service Discussion (Altcoins)
Re: RIP Poloniex Trollbox
by
dmatthewstewart
on 09/06/2017, 02:31:38 UTC
You know whats sad??? Is that every exchange is shady...

Remember Cryptsy? What happened? First the withdrawals never completed. Then customer service was out of reach....

Cryptsy staff still tried to address problems in the chat. Its gone. My last two withdrawals from Poloniex never arrived. They show as "Completed: Error"

Want to talk to Poloniex staff? No problem. Just create a Freshdesk account and hope they reply.

The structures and staffing of exchanges has always been poor. And each one should be suspect. Its been 48 hrs and I dont have an answer on my "error" withdrawals

Screen grab of the last test withdrawals failing

http://imgur.com/a/pj88k

Now, last week I had noticed something that was shady. Staff had suggested that every withdrawal is manually processed after you confirm the withdrawal from your email. Isnt that an odd way to handle the sending of BTC? I mean since day one we had (and still have faucets) that make the payments automatically. I had been skeptical of Poloniex so I signed up just to test it out. They failed. I had to troll them for 4 days to get them to approve a withdrawal. Now, that started happening with Cryptsy when they didnt have the money to actually make the withdrawals. Just like when there are runs on banks. Delay the withdrawal any way possible. Now I get errors. For 7 years Ive never had a completed transaction not appear and be listed by an independent source as having an error.
Post
Topic
Board Mining (Altcoins)
Re: RX480 gpu0 reports 4Mh/s only on linux
by
dmatthewstewart
on 30/05/2017, 19:57:01 UTC
i had this problem on linux i had to switch GEN1 PCI-E to AUTO (as said in the HELP) in the bios and it fixed the problem.

i'm using onboard gpu for screen.

you mean integrated graphics?

Is it an APU?
Post
Topic
Board Mining (Altcoins)
Re: Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v9.3 (Windows/Linux)
by
dmatthewstewart
on 30/05/2017, 19:48:42 UTC
Im curious as to why the DCR authentication fails. Is it buried somewhere here in these 500+ pages?
Same problem here. Using windows7/64bit with claymore 9.3 on decredpool.org


Have you created your worker??

Oh sure. Not sure why it was failing. It finally worked after a few start ups.
Post
Topic
Board Mining (Altcoins)
Re: Should I be getting >24MHs stock? (480/470)
by
dmatthewstewart
on 27/05/2017, 00:44:17 UTC


470 and 480 is like the same. I'm getting what you getting on your 470 pretty much exactly the same speed at 70 degrees. How high could it go ? Should I OC ?

I've found OC'ing my 480's doesnt make much of a difference. I get within 0.5mh/s if Im running it fully OC'ed or if Im running it undervolted and core clock 1100. So far the best option for my 480 (XFX Black Edition-blower cooler-Samsung 8gb VRAM) is the flashing the modded BIOS onto the card. Without that I dont see a good enough bump. I have two 480's that arent flashed yet. I run them at -24mV and 1100 core clock. They run at 65C with the fan at 51% in After Burner and they do the 24mh/s. And the card is only using 75-78w. One of them never budges above 75W (which is great, 460 power draw with 2,5x the hashrate of a 460) These cards seem to do much better with the better memory timings than anything else.
Post
Topic
Board Mining (Altcoins)
Re: GPU not detected
by
dmatthewstewart
on 27/05/2017, 00:30:02 UTC
i believe that card is too ancient, which is the reaosn why it's not recognized, it's better if you update your gear with soemthign fresha nd new like the rx 570 or 580, they don't cost too much, there is also the 560 which is even cheaper

Like @Lauren Smith said that card should still be detected and used fully by the miner. Even my R5 gpu cores in an APU get detected and fully utilized. You really shouldnt need a 470/480 (or newer) to do this. Even 7970's work pretty good and you can find them used for $65-80. However, if youre going to get 570s or 580's Best Buy still has some in stock and B&H are getting their stock in next week.
Post
Topic
Board Mining (Altcoins)
Re: 4x RX380, Windows only detects 3 cards, Claymore miner only detects 2
by
dmatthewstewart
on 27/05/2017, 00:25:15 UTC
Have you tried running it with cards only in slot 3 and 4?
Post
Topic
Board Mining (Altcoins)
Re: Downgrade Driver - Catalyst (Crimson) 15.12
by
dmatthewstewart
on 27/05/2017, 00:23:57 UTC
Im curious if anyone knows about using the 15.12 with a sytem run by an AMD apu. I have a board running the A6-7400K and it defaults to 17.1 drivers and that seems to be fine for my 480. I can get it to hobble along at 26mh/s. But I also have a 7970 laying around too. Unfortunately on the 17.1 it only gets about 13-14mh/s. Has anyone run the 15.12 drivers with an APU based system?


If you don't know how to downgrade AMD drivers you really shouldn't be mining in my opinion....

Disagree. Its easy to learn and easy to NOT know if you come from a gaming background and let package managers install updates automatically.
Post
Topic
Board Mining (Altcoins)
Re: Building My first 6 GPU Mining Rig
by
dmatthewstewart
on 24/05/2017, 02:42:41 UTC
For my 3 card GTX 1080 ti rig I am using windows 10 pro. Just to have the flexibility to switch between zec, eth, and other alts.


Just curious, what are you parameters for switching to a different coin? Or do you do it manually based on whatever the stats are? Ive got mine narrowed down to zec and eth but wondering if I should just stick with one for a while. ETH seems to generate the most $ for my rig right now. Id like to add more cards and possibly another board (eventually)