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Showing 20 of 21 results by vhaasteren
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Board Bitcoin Discussion
Re: FACT CHECK: Bitcoin Blockchain will be 700GB in 4 Years
by
vhaasteren
on 10/09/2016, 20:37:06 UTC

Wrong.

You could have been right though, if you were aware of some mathematical facts:

https://ip.bitcointalk.org/?u=http%3A%2F%2Fi.imgur.com%2FfYFBsqp.jpg&t=568&c=eyDijE3i8fSqag

What we do know is that internet speed is advancing at a rate nowhere close to the rate the Blockchain is growing, I hope people have prepared for themselves some real life hobbies, especially since downloading the Blockchain will become a long process (taking a couple of weeks), andBitcointalk.org will experience more DDoS attacks.

Re the info-graphic.

Even though that info-graphic is widely circulated on these forums, unfortunately it is wrong. Bitcoin only has 160 bits of security. The private key is 256 bits, but we are only using a 160 bit hash for the bitcoin address. So there are many many private keys associated with the same bitcoin address.

160 bits of security is still a lot (and due to the hashing, we know of no Quantum Computing algorithm that can crack bitcoin even if they had the computing power), but it is not strictly true that thermodynamics puts a limit on cracking bitcoin as is said on the info-graphic.
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Board Bitcoin Discussion
Re: What "facts" you heard about Bitcoin is not true?
by
vhaasteren
on 10/03/2016, 00:15:17 UTC
This infographic:

http://miguelmoreno.net/wp-content/uploads/2013/05/fYFBsqp.jpg

Since addresses only have 160 bits, this graphic is quite incorrect.
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Board Speculation
Re: rpietila Wall Observer - the Quality TA Thread ;)
by
vhaasteren
on 01/01/2016, 21:40:43 UTC

Actually I just changed my mind. I do not intend to punch holes just into the copernican system. I want to put the whole system under pressure so that it would either break or persist. If there are any weak points in our current understanding of the cosmos then I would love to keep punching those weak points until they are no longer weak points or the whole thing falls apart. Copernican system has its flaws.

My personal suspicion is that the Earth is hollow and although the Copernican system is correct we live on the inside surface of that hollow earth rather than on the outside surface. What we see in the sky may or may not be what we have been told. Since moon landing was a hoax and Mars rover is a scam, I don't have enough information to say anything about the nature of things beyond the Van Allen's belt. The Russians who drilled 12 km deep hole discovered that in contrary to their expectations the earth actually became less dense as they drilled deeper. This could mean that they drilled past the centre of gravity and that the Earth's crust is not as thick as we have been told.

Since there is a giant hologram already cast upon our Moon to hide what is really on the Moon it is not far fetched to extrapolate that other astral bodies may also be just holograms. It's pointless to argue with me on that because you cannot prove nor disprove it. Pretty much the only thing we can actually prove in this whole context of conspiracies is the concavity of Earth and entrances/exits at the poles of Earth. Alternatively, it would be great if we got to see video footage of Earth from space (as high as possible) that does not use fish eye camera. If the horizon up there is still on the eye level then it is a definite indicator that the Earth is concave or at least flat.

Ok, well, I tried to give you all my two cents. I'll leave it at that. I hope the new space missions of the next two decades (going to the moon again, as Europe is planning, and going to Mars) will demonstrate for you once and for all that these conspiracy theories are incorrect.

Happy new year.
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Re: rpietila Wall Observer - the Quality TA Thread ;)
by
vhaasteren
on 31/12/2015, 20:59:03 UTC

When I saw this video, it was clear to me that what we are taught in the geography is utter bullshit and should not be taken seriously. It is a known historical fact that no one has ever drilled deeper than 12 km. Thus, how on Earth can a scientist say what is inside Earth. Just because some places put out lava does not mean the whole Earth is filled by it. Those shit scientist really think people are that stupid that they believe just any ridiculous explanation they serve via the public education system.

Hyena, I'll be polite this time, but please listen to me. This is exactly the reason why people like me would get irritated by you.

There is a very simple physical reason why that is happening in that video. There is also a very simple reason why it does not happen in planet formation (hint: the ratio of centrifugal force and self-gravitating force is different). The problem is that you don't understand that, and immediately conclude that all of physics is wrong. Why don't you instead ask someone who understands physics to explain why we do not think the Earth is hollow? Then people like me are much more inclined to reasonable conversation...   with your attitude, however, you cannot expect people to take you seriously.

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Re: rpietila Wall Observer - the Quality TA Thread ;)
by
vhaasteren
on 31/12/2015, 02:48:12 UTC

Nice way to conclude this, indeed. Have a great NYE all
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Board Speculation
Re: rpietila Wall Observer - the Quality TA Thread ;)
by
vhaasteren
on 31/12/2015, 00:15:50 UTC

He honestly believes that NASA is telling the truth and hasn't faked anything.


Just out of curiosity, why would NASA fake anything? Because of the arms race with the Soviets? And if this is all BS, why are private space operations becoming a big business? SpaceX is seriously going to send people to Mars within about a decade. It's their sole reason for existence. Is that going to be fake, too?
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Board Politics & Society
Re: The space launchings aren't putting food on your table.
by
vhaasteren
on 29/12/2015, 22:45:35 UTC
A very good read on revolutionizing space technology, and how/why we need to get to Mars:

http://waitbutwhy.com/2015/08/how-and-why-spacex-will-colonize-mars.html

All written from a SpaceX perspective, but since NASA contracts SpaceX, it's still on topic.
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Board Speculation
Re: rpietila Wall Observer - the Quality TA Thread ;)
by
vhaasteren
on 29/12/2015, 00:08:38 UTC

Just because you are an astrophysicist doesn't mean you know anything about the shape of the Earth. You observe the stars, right? Not Earth -- stars. So how can you tell such a story? It's just a bunch of assumptions. If you truly were a proper scientist you would understand that. You don't know how the universe operates, stop making dumb assumptions.



What if the universe is surrounded by Earth and the farther away from earth you go the smaller you shrink? Yeah it may sound weird to us due to our expectation bias brainwashed into us by the public education but it is a possibility. And guess what, ALL THE MATH WOULD STILL WORK OUT. You could still do your astrophysics and you wouldn't see a difference. Come one, did I really have to tell you this? Why is it that you cannot come to the same conclusion on your own? This is how strictly you are thinking INSIDE THE BOX.


I'll ignore the ad hominem attack. Instead, let's ask the following question:

What problem does the concave Earth theory solve? A new theory is usually developed if there is a problem with the current theories. Subsequently, that new theory needs to make a testable prediction, preferably one that is different from the established science.

I have not even seen a reason why we would need a concave Earth theory in the first place. Nothing convincing I mean. There is nothing wrong with the understanding that the Earth is a ball-like planet. Trust me, there are many very smart outside of the box thinkers that happen to be scientists out there. With wild ideas that still make sense, both mathematically and conceptually. The concave Earth theory does not fall in that category.

For fun, test yourself. Google "are you a quack", and read the first hit (by Warren Siegel). I actually have gotten quite a few emails with theories of people that I have to refer to this...

Enough though. I'll go on mute again for a few years...
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Topic
Board Bitcoin Discussion
Re: Is Google supercomputer a threat?
by
vhaasteren
on 11/12/2015, 19:28:28 UTC
Nah don't worry, this is old news and the dwave seems far too out there still.

Just remember this old infographhttp://i.imgur.com/vCkuFAY.jpeg

Uow, I've never seen this piece. So, is it certainly impossible that a new, disruptive processing technology is invented? I mean, that could process without the limitations we currently know?


That infographic is incorrect. Bitcoin has only 160 bits of security, since the hashes are only 160 bits. You don't need to match the private key, you need to match what it hashes to. Still, 160 bits of security is more than enough.
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Board Wallet software
Re: Which Bitcoin wallet is the most secure?
by
vhaasteren
on 11/10/2014, 05:58:10 UTC
Armory is certainly the best when it comes to security. The only thing i don't is that there are too many functions which can get confusing. Good and bad but generally is still the best. Using one right now after completed downloading the whole blockchain

Armory is a great option for people who are security experts and understand how to harden a desktop system against malware. A sandboxed, signed-code-only platform like ios is more secure for non security professionals. It uses the trustedBSD managed access control model for app separation.

Armory offers an easy way to put your coins into cold storage, which is the safest way to store your coins. Unless you can offer that on your iOS app, you can't say you are more secure.
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Board Speculation
Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion
by
vhaasteren
on 01/10/2014, 19:31:23 UTC
Please back up your claim with some kind of proof.

Here you go...

Proof that 1 = 2:

Step 1: Let a = b.
Step 2: Then aa = ab.
Step 3: aa + aa = aa + ab.
Step 4: 2(aa) = aa + ab.
Step 5: 2(aa) - 2ab = aa + ab - 2ab.
Step 6: and 2(aa) - 2ab = aa - ab.
Step 7: This can be written as 2(aa - ab) = 1(aa - ab).
Step 8: and cancelling the (aa - ab) from both sides gives 1=2.


Yeah, right. You are dividing by 0 between step 7 and 8. Only allowed if you are Chuck Norris, which you are not.

1) Very good, grasshopper.
2) Where is your proof that I am not Chuck Norris? Wink


Oops. I may just have made a very big mistake...  Shocked
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Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion
by
vhaasteren
on 01/10/2014, 19:20:13 UTC
Please back up your claim with some kind of proof.

Here you go...

Proof that 1 = 2:

Step 1: Let a = b.
Step 2: Then aa = ab.
Step 3: aa + aa = aa + ab.
Step 4: 2(aa) = aa + ab.
Step 5: 2(aa) - 2ab = aa + ab - 2ab.
Step 6: and 2(aa) - 2ab = aa - ab.
Step 7: This can be written as 2(aa - ab) = 1(aa - ab).
Step 8: and cancelling the (aa - ab) from both sides gives 1=2.


Yeah, right. You are dividing by 0 between step 7 and 8. Only allowed if you are Chuck Norris, which you are not.
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Board Meta
Re: Delete all the old and unused accounts.
by
vhaasteren
on 15/09/2014, 18:21:15 UTC
Agreed, very bad idea.

I rarely ever post anything, so I have a very low activity count. But I am logged in a lot, so I'd be pissed if my account got deleted.
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Topic
Board Bitcoin Technical Support
Re: Hacked and stolen
by
vhaasteren
on 27/05/2013, 17:40:00 UTC
Quote
Come again? I am not sure how you think there is no added security in how I keep my wallets... of course the blockchain wallet is base level no added security... that's why it is my outbound wallet and is always empty when I am finished using it.

The second wallet does have an added step to security... in order for someone to use it they would have to sign into my VPS account and boot the instance,  or have my private key. Not saying it can't happen, but it is an added step between them and my coins.

How the third wallet is just as hot as the blockchain wallet idk... you can't even search for the wallet, and if you found it, you couldn't move it anywhere useful unless you have my admin password... access denied to anyone other than the local domain admin account. Folder security is not hard so... yeah...

I understand these are all measures OUTSIDE the actual BTC client, but that is exactly where people are getting themselves stolen from... an unsecured platform.

As far as the Cold Storage... I never implied a vanity addresses difficulty increases security... I know it doesn't, never said it did... just detailing how I got the address. The object is not to use this wallet EVER until the day I clean it out... so no, the privkey has never touched the network, and I can send all the coin I want to it without having to sign a single raw transaction... you lost me there... don't know where you were headed with that... since you don't need a privkey to see an addresses balance.

Now, for the "and poster: please get informed before giving security advice with respect to bitcoin" comment... you should really elaborate more when you try to pick apart someones posts... other than recommending a 3rd party service... not once did you provide any type of useful feedback on how I am doing things incorrectly or how to correct them. You basically flamed me, made two statements with no suggestions on why I am wrong nor how to remedy those supposed errors, incorrectly assumed I meant a 45 billion difficulty vanity address was more secure than any other and then advertised a website... not very helpful.

Thank you for exemplifying my signature quote. Cheesy

daemonfox I think you have missed vhaasteren's point a little bit here:

He is trying to say that your hot, luke warm and simmer down wallets, all exist as wallet files on a networked PC, therefore offering no increased protection for one another if your passwords/computers are compromised, obviously the ways of finding the wallet.dat files etc may differ...

He then mentions your cold storage system. Basically, he is saying that as you must import your private key to a networked computer to spend the funds (current arrangement) that this is only as safe as aforementioned three wallets when you come to spend the funds, although, these should be secure from theft before that happens. He was trying to imply, that in order to spend any funds from this wallet, without importing the priv key to a (potentially compromised) client/computer, you could spend funds by generating raw transactions (req. know-how and is still hard).

I must agree with him, that armoury on a second, 100% offline (never before networked) pc/netbook really looks to be the way forward, until secure bitcoin hardware wallets are sucessfully implemented.

I personally bought the cheapest Asus netbook new off amazon, disabled all network devices in BIOS, formatted to ubuntu 10.04 and loaded armoury onto it. Cost ~£150. Price worth paying for securing my coins? Absolutely.

Hope this helps.

Exactly.

Daemonfox, I did not mean to flame or offend you, but we are talking about advice on how to keep money safe. Unless you are one of the top minds in the scene, you do not want to invent measures yourself. The only ones that would take note of your descriptions would be newbies, and they are exactly the ones that should not follow your advice. They need an easy way of doing the right thing, with only a small possibility of human error.

If I did not explain well enough what was wrong with your methods I apologise. However, these matters are subtle, so I wanted to avoid a discussion about details. If you produce your own private key management system as you are doing, you can easily create a situation where your private key touches a computer that has been compromised, even only momentarily, thereby destroying the 'air gap' that guarantees 100% security. Armory does exactly that, with minimal effort, and you can even still spend your funds.

I myself have actually installed Armory on a Raspberry Pi (cost about $50 including all accessories), but a usb stick as Rampion suggested is cheaper.

I hope this was useful
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Board Bitcoin Discussion
Re: How to Create Paper Wallet
by
vhaasteren
on 23/05/2013, 17:35:22 UTC
I can't believe nobody in this thread mentioned Armory yet: http://www.bitcoinarmory.com/

It is very easy to use, and makes making paper wallets a breeze.
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Board Bitcoin Technical Support
Re: Hacked and stolen
by
vhaasteren
on 18/05/2013, 08:11:54 UTC

Wow... and what "good firewall" might you be using? Also, just having a router does not make you any safer... it just adds a couple steps to making a connection to networked equipment.

If you are really looking for security, you need to read more and listen to the people here who aren't flaming you, they are giving you good advice.

For starters, I do the following for my BTC use:

HOT WALLET: I have an active wallet on Blockchain.info that is solely used to payout directly to people I exchange with outside of BTC-e or VirCurEx... this is merely a personal choice as it makes it so I can send BTC from anywhere I have internet and everything has an email alert.

SIMMER DOWN WALLET: I have an encrypted wallet that I use to receive coins from others in exchange for services or donations etc. This wallet is located on a VPS that is ALWAYS OFF until I log in to boot it and unlock the wallet... it takes a while to get the blockchain but I only access it about once a month and track it using the blockchain.info to see if there is anything there before i even bother. This is not that secure by itself but keeping my VPS account secure and the VPS offline unless I am using it addes to it... and it is never much BTC anyways.

LUKE WARM WALLET: There is an encrypted wallet on one my HDDs in my file server at home, but it is not in any typical directory, does not have any other files in the same directory, is hidden, and can only be accessed by my administrator login, of which uses a hashed key as a password which is stored on a USB drive on my keyring. This is used as an intermediary before I send BTC to cold storage. I use this wallet to withdraw from exchanges and as my mining wallet. I try to empty it daily. Also, this server DOES NOT actually host the client I use to unlock and transfer BTC... I have to map to it from my laptop with the Administrator hash key and then I can drop a copy into the client directory, restart it, do my business, encrypt it again then overwrite it back to the server before disconnecting the mapped drive.

COLD STORAGE WALLET: I have a wallet address and privkey pair that I generated with vanitygen... at 45 BILLION difficulty... and I have NEVER used it for anything but receiving BTC. I tested another address and privkey pair by importing it into Blockchain.info and once I confirmed it worked, the harder address and privkey were generated (got mad lucky said it would take 2.5 yrs in oclvanitygen but it popped up on day 4) and tested sending it some BTC... walla Blockchain shows it has value but there is no way to get to it until the day I import it somewhere. I pay myself 30% of my mining intake and transfer that here plus any substantial payment/donations.

LONG TERM INVESTMENT WALLET: I also have a wallet I put my first 5+ BTC in... it is encrypted and exists in a handful of formats... keys printed and mailed to my mother who put it in our family safe deposit box, a copy of the encrypted wallet.dat on a USB that is also encrypted and sits in my safe deposit box at the bank, another USB that is encrypted and sits in my son's dresser with his other personal items he keeps, the encryption password for both USBs was printed (again a hash key), sealed in an envelope and given to my mother in law to put in her safe deposit box, and lastly the UNencrypted wallet.dat was burned to 2 DVDs that are locked away somewhere with my grandmother... i have no clue where as she agreed they would be sent to her personal estate storage and could not be retrieved until her estate is passed to me upon her death (dad was furious rofl that's what you get for alienating yourself from the family DAD... GG).

Anybody got any other methods that you use to keep safe? I know it sounds like a lot of work for some BTC... but I know I won't be posting here with a sob story and 100s if not 1,000s of BTC stolen.

I am not a regular poster, hence my post count, but I could not let this go by unnoticed in a thread about theft. There are a couple of misconceptions in this post that reveal that you have invented these security measures yourself. Please, do not take these practices as advice, and poster: please get informed before giving security advice with respect to bitcoin.

Clarification: your HOT, SIMMER DOWN, LUKEWARM wallets do not offer any different security. They are hot wallets. With respect to your 'cold' wallet: the difficulty in vanitygen is in no way related to the security of your private key. Only how difficult it is to get the first few characters equal to what you gave it. The security of a private key is the same. Also, you cannot really use this cold wallet offline, unless you know how to sign raw transactions. The idea of cold storage is that the private key never touches the internet. Not even temporarily touches a computer that is occasionally connected to the internet. But you still want to use it, right?

I recommend that you have a look into the bitcoin client Armory (https://bitcoinarmory.com/). It can give you easy to use cold storage that is truly  safe, and you can make paper backups of your wallets to put in your safety deposit box.

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Board Altcoin Discussion
Re: Ripple Giveaway!
by
vhaasteren
on 01/03/2013, 02:24:56 UTC
rJ76yEA3MjG6foR7Np2gCxkSSe6cRy5fsH
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Board Beginners & Help
Re: When do you use your real name, if ever?
by
vhaasteren
on 10/01/2013, 17:55:52 UTC
Use mine all the time.
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Board Beginners & Help
Re: NEW info. It appears that BFL are the biggest liars!
by
vhaasteren
on 10/01/2013, 17:53:11 UTC
BTCers love to speculate  Cheesy
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Board Games and rounds
Re: Make me laugh for a bitcent
by
vhaasteren
on 10/01/2013, 17:49:26 UTC
Bitcent sent  Cheesy