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I thought you went to sleep with your funds in USD :p This dip would have been perfect for you. Still, looks like there's a long road ahead of you my friend. Skipping days is alright as long as you stick to your goal I guess, so good luck  |
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You don't need to be there physically to solve the clues. You only need a picture of the art itself. This is not the first time that this type of puzzle was released in the internet with bitcoin as the reward. Fortunately, Pascal provided a high res link in the tweet: https://i.imgur.com/BOiXPzl.jpgI don't think so.. https://twitter.com/pascalboyart/status/1082323349135675392Some twitter dude : "Peut-on trouver la réponse via le visuel HD ou on est obligé d'être sur place pour trouver le solution ? Super le concept en tout cas !" The artist : "Sur place !" I don't think the artist would have any reason to lie, he's giving away money and at the same time promoting his artistic work. |
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The reason I was asking this question - After buying a brand new laptop "Lenovo Ideapad 330" I was downloading only the Blockchain and no other program.
The Laptop was updating in one month more than 5 times and after disable updates in "services.msr" it was still updating and download massiv data.
This was making me distrustful whats going on here and maybe you got the same problem.
I'm not saying it's impossible, because theoretically unless you block out all outgoing/incoming requests to windows servers, which can include updates, telemetry data, and all sorts of data you agree to submit by default, then Windows can have access to your data. This is even possible for linux/ubuntu because software and package updates are enabled by defaukt, but since its an open source OS, updates are coming from a public repo, its hard to wear a tinfoil hat that big and believe that all Arch devs are out there to take your bitcoins  But even for Windows, dont you think its a bit too far? If you were to mistrust big corporations, the damage they can do to you if they go "rogue" is laughably dangerous. Do you use Gmail? What if Google filtered all emails related to blockchain, web wallets, and private keys? You trust google? So what about your ISP? Maybe they could intentionally modify your traffic to screw with your payments... You can clearly see I can go all day with this, from your laptop down down to your smart toaster connected to the internet, if you were to distrust everything around you, youd never sleep. But maybe it can help you to think of how relevant of a target you are. Do you really think Windows or any other entity that you unwillingly have to trust, care about targetting you specifically? You know there are probably hundreds or thousands of people richer than you that use that operating system, chances are very unlikely that youd be targetted unless a massive breach happens within these corporations. On another note, just make sure your windows is legit. Ive seen with my own eyes pirated windows copies that run a miner process upon installation. |
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This is a decent idea but there are a few caveats :
Wouldnt the receiver IP need to be online 24/7? If the server is down for some reason then I guess you need to implement some sort of fallback or it wont go through...
Man in the middle is awfully scary too, especially if you're relying on a server rsponse to send your coins. You havve to worry not only if you're the receiver but also the sender. There are a lot of attack vectors that you need to proof against, with SSL mentioned by satoshi above being just a small part of it..
People will be a lot more tempted to compromise servers. You cant fake a btc addresss or claim it unless you have the privkey, but you can definitely hack servers, the damage would be massive compared to just a single compromised address.. Same goes for clientside, you can use SSL to encrypt your requests, but what about before the request goes out? I know very little about networking and the dumbest idea I can come up with would be to just fuck with your hosts file and simply redirect all your requests from someexchange.com to mywebsite.hack..
If there is something like this in the works Im sure they're all beating the idea to death in order to avoid/minimize issues like these. Just see how cryptography has very little human factor involved and yet we still see people lose their keys. If you open up a door like this imo the benefits are minimal compared to how much more room there will be for human error.
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Commenting here in case I might use your services in the future. Consider it a free bump, good luck with your tasks, hope all your customers are satisfied.
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Id say you redeemed yourself as a newbie for the effort Im not sure how hard it was to make that video but it looks a lot cooler than our mortal static jpegs, good luck you bastard |
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That's actually a good question. I understand how including the most txes with the most fees per kVB will mean including the maximum number of txes with the largest fees. But I can't help think about flat fee. Let's assume someone broadcasts a tx with a ton of inputs and a chunky script size. If it only uses 1/3rd the average of network fees/byte, ( https://bitcoinfees.earn.com/ I generally use this website to see the minimum fee needed for the tx to be confirmed in the next block), but even with very low fees, the flat payout for this big transaction is considerable, is it still going to be seen as any other tx? So by pure satoshis/byte? I always wondered if miners choose to ignore these kind of transactions. |
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https://bitcointalk.org/index.php?topic=5090535.msg48944607#msg48944607Related post. To add on this, the worst scams are the ones that go undetected for a long time. If a casino decides to pull in more profits than they should, its really hard to pinpoint how theyd do it. This is especially messed up because a casino could for example scam 1 out of every 5.000 users and youd never be able to call them out on it.. Thats assuming they dont use much more complex techniques like in the link.. So in the end it becomes a matter of trust again. Put your money on sites you can trust, and withdraw frequently to not get that trust abused.
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Funny how they do accept anonymous deposits in the first place. If a casino or whatever service has a standard KYC policy, they should ask their customers to verify their accounts before they can deposit. Else it's just unfair.
Nothing new honestly, not that I like this or approve of it, but literally every gambling website out there uses this "technique". Only ones Ive seen so far that dont do this are pure dice websites.. |
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You seem to be an overqualified Google researcher
No joke I get told that so many times I'm starting to believe I might actually have something figured out that most people don't. Glad you found what you needed, it honestly looks like a great read if you have the time. |
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I used my googling skills again. Each block is stored in a single file. If you want more information on that this is a great extensive explanation on what/how that data is stored : https://en.bitcoin.it/wiki/Bitcoin_Core_0.11_(ch_2):_Data_StorageI skimmed through this and it explains a ton, but it still misses just a slight part about how this is linked to the codebase, what's the data type of the blockchain and if it follows an OOP structure like you're expecting. I understand how they'd never be arrays though, the blockchain is never loaded in full in memory. That's probably the number one reason why C++ was used, for its extensive memory management capabilities. You should scroll down that link and check the last 2 chapters for more information about the implementation, I'm not sure if it'll be enough for what you want to understand, you can always wait or ask in the bitcoin.stackexchange.com. |
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The cases I linked above are also a 1-of-n multisigs, so technically the output script isn't going to get bigger every time because only one signature is required..
I'm not sure about if you can re-use signature to reduce script size, but i'm sure script size is going bigger as you need to state same public key multiple times. A bit off-topic, i found formula to predict multi-sig size which can help you predict actual script size at https://bitcoin.stackexchange.com/a/52720Ah yes I forgot about the public key of the address included in the script, I only remembered the multiple signatures vs a single signature needed.. You're right about that part. |
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Is there a security flaw in this that I'm not seeing? Is spending coins to/from these addresses safe?
Probably only the fact that you don't gain security benefit from multisig address & your Bitcoin will be stolen even if one private key is revealed to thief. But aside from that, AFAIK it should be safe to send/spend to/from that address as long as the script is valid. If the one who make such multisig script can make this mistake which increase tx size/fee, i doubt he can make proper script. Yes I know that this completely ignores the concept of multisig because I'm using a single private key, but that's not the security risk I meant. I'm talking about the cryptographic signature weakness and such, I have very little knowledge on the field so it would be great if someone can confirm if using the same private key to sign txes from all these addresses could weaken it. The cases I linked above are also a 1-of-n multisigs, so technically the output script isn't going to get bigger every time because only one signature is required.. It's really cool because you just need the input and you can build a transaction for all these addresses, exactly the same way you would for a normal address. I'm almost tempted to start doing this myself but I really need more insight on the mathematical part.. |
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What do you mean by "inverted the position of two of those words, two times"? How exactly you did that will affect the number of possibilities (as some orderings could be ruled out).
The upper bound to this is (24 choose 4) * 4! = 255024. (24 choose 4) is the number of ways you can choose 4 items from a set of 24 elements. 4! is the number of ways you can order those 4 elements. This is a multiplication since for each way you can choose 4 items, there are 4! ways you can rearrange them.
Let's say the seed is: Word1 Word2 Word3 Word4 Word5 Word6 Word7 Word8 Word9 Word10 Word11 Word12 Word13 Word14 Word15 Word16 Word17 Word18 Word19 Word20 Word21 Word22 Word23 Word24 Well, my "encryption" technique was to write in that order: Word1 Word23 Word3 Word21 Word5 Word6 Word7 Word8 Word9 Word10 Word11 Word12 Word13 Word14 Word15 Word16 Word17 Word18 Word19 Word20 Word4 Word22 Word2 Word24 So I switched Word2 <> Word23 and Word21 <> Word4 But when I try to revert that, this doesn't work. So I must have screwed up somewhere. My hypothesis is that I have inverted the "wrong" words, but I don't know which ones. The inversion should have been made in a symetrical position, like in my example. But since I screw up, maybe I have switched words in a non symetrical position. I know I'm late to the party with Coding Enthusiast showered with merits. I hope he helped you get your key back, because if he didn't : I don't see how there are that many combinations unless he bruteforced every possible permutation of 4 from 24, which is roughly 331776 possibilities (minus repetitions I guess.) If I strictly follow the way you switched up your words : You swap every word with its symmetrical other word. You swap exactly 2 words. This will HUGELY reduce the number of possibilities, but don't take my word for it : http://jsfiddle.net/gu2809ht/I wrote this in 5 minutes and didn't bother to make an output in html (sorry), so press run and open your console and you'll see the output : Word24 Word23 Word3 Word4 Word5 Word6 Word7 Word8 Word9 Word10 Word11 Word12 Word13 Word14 Word15 Word16 Word17 Word18 Word19 Word20 Word21 Word22 Word2 Word1
Word24 Word2 Word22 Word4 Word5 Word6 Word7 Word8 Word9 Word10 Word11 Word12 Word13 Word14 Word15 Word16 Word17 Word18 Word19 Word20 Word21 Word3 Word23 Word1
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Word1 Word2 Word3 Word4 Word5 Word6 Word7 Word8 Word9 Word10 Word14 Word13 Word12 Word11 Word15 Word16 Word17 Word18 Word19 Word20 Word21 Word22 Word23 Word24 The number is so small because symmetrical swapping reduces in half the number of permutation, (1<>24 is the same as 24<>1). The list above is exhaustive of every possible way you can permute using your special technique. I just couldn't help comment in case you still didn't try to import/test the 30 thousand possibilities, I hope you don't have to  In case you're not sure you swapped them symmetrically of course, you can expand the search radius, but there are a few steps before trying the full 30k solutions. (Like if the 2 words you swapped were neighbors, or far away by n words, etc.. which are also much less) I'm also as jealous as a middleschool schoolgirl because this is a really easy problem.. Right place at the right time I guess  |
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Has any of you already have a blog with such price tracker that if clicked by a user will lead to an affiliate link of yours that will give you an income?
It would be beneficial not just for the creator of the tracker but also for the users who put it on their webpage. I'm determined to make promotions of this in my country but hope to also profit from it.
Open source wins yet again https://btc-priceimg.herokuapp.com/This isnt technically a price tracker ticker but more of a reverse btc ticker. You want to sell something for 50 usd? Just get the link : http://btc-priceimg.herokuapp.com/img/50.00  The image above will always show exactly 50usd worth of bitcoin according to bitcoinaverage.com |
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presented green dildo Do I need to start preparing paper wallets? all of the forum crossing fingers for that ............. Can edit the first post and put the players list on it? I don't check this thread daily but when I do I want to quickly see all the participants, I have no idea which page the list is on and it gets tiring to look, cheers for the big green dildo  |
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Give-and-take; it reduces the chance of making a larger profit off any individual coin, but by increasing our coin-pool and diversifying it makes it more likely that we experience more coins to profit (since there are more coins, there are more chances to profit).
Honestly it would suck to miss out on profits on good alts, when I suggested to find some sort of mechanism to maximize profits I mostly meant to stop-loss when a coin is tanking too much. It's almost always the case that when a coin is going good, it's going great, so if it makes a +20% jump during a week it's not unlikely for it to make ten times that amount during the same month, and vice versa. But like Loyce said it's hard to try and micromanage every investment, there's still a long time ahead so this is still up for discussion until then. |
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 Imgur link : https://imgur.com/JRTRqNXA little backstory for this.. It's extremely fascinating for me that in the last 5 years so many new projects emerged. I genuinely remember how less than a decade ago, "blockchain" just meant bitcoin. Coding a new coin just meant forking the bitcoin repository and changing the difficulty to suit your new coin's need (Hello LTC!) And yet here we are, Vitalik could run self-executing contracts on the chain, XMR's blockchain hides transaction amounts and inputs/outputs, and honestly if I were to cite every innovation that people tried I'd probably hit the character limit on this. It's amazing how much the technology evolved and how much potential people finally see in the crypto world. But it's not going to be easy, so for me, by the end of 2019, I have to at least be able to understand the ins and outs of blockchain programming, which should be an achievable goal. By the end of 2019, I'll have finished "learning" everything about crypto, and/or contributed something new to bitcoin. And so on 2020 my resolution will be to actually successfully launch my own currency. (Maybe participate in this competition again with that resolution ). Thanks again for this! And Good luck to all participants EDIT : Also, I added the BTC myself to the sunrise, no worries about copyrights. |
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In no way am I confused, by blockchain programming I mean I want to program a blockchain. I’m not asking what a blockchain is as I’ve known for a long while, I want to be able to build custom blockchain solutions. Meaning I want to be able to program and run a blockchain, block explorer, wallet, and cryptocurrency. With this I’m sure I could work on established networks as well and I plan to learn solidity for smart contract programming.
I believe your right, I will keep learning the basics and intermediates of c++ to learn how to program and it's fundamentals, from there I will focus on learning how to build blockchain applications and pick up which languages I need to learn and how to apply them along the way. And thanks for the crypto challenges, I will surely use those.
What Heretik suggested is not learning blockchain applications, but learning blockchain fundamentals that aren't programming language. I made a thread a while ago : Books about bitcoin/blockchainIf you're not proficient in C++, learn using it. Program applications, ANY applications. Blockchain programming shouldn't be something you use to learn a language, you already need to have mastered the basics and you should be able to program anything using your chosen language. (Hence why a lot of people pick javascript in their github blockchain projects because it's "easy"..) Once you control the language, you then spend time familiarising yourself with the blockchain technology. You understand cryptography, you understand elliptic curves, you understand the satoshi white paper, basically you get an idea about everything needed for you to code the blockchain FROM SCRATCH. Of course if you actually follow this road, it's not going to be easy. The non-programming aspect of this shit is fckin hard, even for us coders. But believe me, anyone that didn't do this couldn't ever dream of adding anything new or ever coming up with something innovative. People who self-title themselves as "blockchain programmers" while they barely know the surface of the technology and can only clone projects like some github parrots, rather than be able to understand it so well they can contribute with their own ideas, those are no blockchain programmers in my eyes. You can always be one of those if you prefer, it's easy to keep using trial and error and code a shitload of clones until you "understand" how to code a bitcoin clone |
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