I was thinking the private keys could be encoded in an encoding language to make them slightly extra secure incase any thief has no idea what he's doing.
I think what actually you're looking for is Obfuscation[1]. But generally it's not recommended due to risk of forget or unable to extract the data. I would love to just be able to store my holy wallet.dat file away for many years and be able to re-gain access to my wallet using this file, primarily through other wallets too if Bitcoin Core wallet seizes to exist by then.
That should never happen considering that bitcoin core is the reference implementation of Bitcoin. But it is open source and many people are using it, so it would be trivial to write a simple script that decrypts and extracts the keys inside the wallet file to be used elsewhere. Additionally you could also, 1. Backup Bitcoin Core. 2. Rely on public archive such as https://archive.org/details/software. 2. Ask someone else who have such file, since many enthusiast run Bitcoin Core. |
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Lol.
Ok so started to build the app. First got 12 million computations per day as a test, this generates the private key, and public key etc. I now compare that to a database of 60000 known public keys and balances.
Day 3, improved the code somewhat. Now the same app is running at 500 million computations per 24 hrs, comparing the generated output against a dBASE of 60000 known balances addresses
So my computations are now 500 million * 60000 per 24hrs. The numbers is to big to calculate.
This is running on a Windows 7 pc icore 5.
Let's see what it comes up with in a day, a week, a year.
I know the numbers are huge.
FYI, you're not the first people trying to generate all private keys. Have you checked LBC? According to them, their pool performance currently is 107.85 million keys/second[2]. Some people don't like LBC though since it use closed source software and there's speculation they targeting specific address. --snip--
I would double-check your numbers though, they seem a little high for a core i5...
Actually i find it's quite slow. Recovery software such as FinderOuter could achieve 64 thousand address per second on i3[3]. [1] https://lbc.cryptoguru.org/[2] https://lbc.cryptoguru.org/stats[3] https://bitcointalk.org/index.php?topic=5214021.msg56043632#msg56043632 |
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I have a limited knowledge in this technical area, can you tell me which type of OS is more vulnerable, Android or iOS? (or this variable depends exclusively on the smartphone user?
By default, iOS generally is safer than Android. But there are things to consider such as user behavior, Android/iOS version and built-in application. Each smartphone brand have different built-in application where some of it can't be removed. For example, there was vulnerability found on Samsung built-in application[1]. [1] https://techcrunch.com/2021/06/10/security-flaws-found-in-samsungs-stock-mobile-apps/ |
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how possible/feasible it is to build/run a centralized exchange with full non-custodial wallet system implemented?
If centralized only means there's a place (usually website which controlled by a group/company) to meet buyer and seller, it's possible. But people usually call it P2P rather than CEX even if both buyer and seller need to use that website. Otherwise, i don't see how it's possible on technical level. |
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I understand what you meant. To be precise, it extract all files and install required software (such as Python). I just tried "PWI_0.0.3.exe" on Windows 10, but i encountered problem and it quit hallway. But i managed to run pywallet on Windows (after i check install script and other user post). Here's what i did, 1. Download and install Python from https://www.python.org/downloads/release/python-2716/. I choose "Windows x86-64 MSI installer". Make sure you enable "Add python.exe" to the path.  2. Download pywallet from https://raw.githubusercontent.com/jackjack-jj/pywallet/b52c955f8c93a75745166ebf281448016e1f22e2/pywallet.py. I right clicked the page and save it at Desktop. On your Desktop, you should see "pywallet.dat" file. 3. Open CMD and run this cd Desktop
pip install twisted
python pywallet.py --web --port 8989
4. Open your browser and enter localhost:8989. Afterwards you should see something like this.  P.S. Sorry for rough explanation, i rarely use windows for this kind of stuff. I also never use web version either. |
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Just putting this here for anyone who may be looking for or needs this info. This site has good recommendations for anonymous crypto exchanges and lists which ones allow XMR. https://kycnot.me/ You're exaggerating, the site list exchange which offer some degree of privacy. Some listed exchange might ask KYC or categorized as custodial. The easiest way I found is just buy bitcoin, swap it to xmr then send xmr to another exchange to swap back to btc and just like that, the public KYC/paper trail is broken.
funny part is a few years ago.. some bitcoin thieves done exactly that.. laundered some funds via exchanges that handled XMR. and then put it through other that converted it back... oh.. they got caught a few months ago and arrested and the courts shown how the investigators followed the money even via the XMR exchanges. It's not surprising if both exchange (to buy and to sell XMR) are centralized. Even worse if they use same IP/browser. |
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Well, and most importantly - what can they track that is so secret? Do you often conduct transactions that they describe as illegal? And there is a list of really very specific operations. Stop doing them and you will have nothing to hide!  Yes, i sell set of toothpaste and toothbrush to same person on Sunday on Rhode Island[1]. [1] https://www.aggressivelegalservices.com/rhode-island-laws-getting-update/ |
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Some block explorers will display the time at which they first saw the transaction, but that does not tell you when the transaction was signed nor when it was broadcasted to the network - it only tells you about the local behavior of the specific node that said block explorer is relying on.
Additionally, block explorer use block timestamp to fill transaction's "timestamp" if the transaction was mined before they run the explorer for first time. |
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An exchange control 51% coins? Not realistic Why not? The whole coin supply is not mined instantly, so you don't need to get more than 10.5 million coins to get 51%. If there is one million mined, then you need only 500k. Another thing is that you don't need even 500k, having a majority of the total trading volume could be sufficient to rule Proof of Stake network. And as far as I know, it happened also on Bitcoin, with some exchanges like MtGox, when they controlled a lot of coins. You can even see such arguments in the mentioned long topic about PoW vs PoS: Why "economy"? It is limiting the definition. I'd say the network as a whole not just the economy. For example the "economy" was centralized back in 2013 when there was one major bitcoin exchange (MtGox) controlling more than 85% of the total trading volume and it was manipulating the market. Yet bitcoin was still decentralized. That's good point, but @BusinessChain said "I am assuming a fully mature system here". I don't know his defintion, but if the coin is popular enough it's unlikely single exchange have majority of trading volume. An exchange control 51% coins? Not realistic, but could be realistic if few exchange and the foundation worked together. It happened once on STEEM network, although i don't know whether STEEM network match your definition of fully mature system.
Correct me if I'm wrong but you don't need to stake 51% of the total supply, but only to stake enough compared to the total amount that was staked by others. Not everyone would stake their PoS coins, many would just store it in their wallets, there are some lost coins, etc. making the needed amount far less than 51% of total supply. Most PoS coins already have a low stake ratio and those with high ones (70%-80%) have a huge premine which if removed brings the ratio to less than 20%. It depends on what kind of PoS we're talking about. On dPoS, you can simply vote delegator to validate a block where the reward is shared between delegator and all voters. |
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Forgetting the mining part, if someone would like to have own node, electrum server, rcp browser and even maybe something like btcpay server, why not to buy „tiny dektop computer” like for example Lenovo M72e? I see you may get one on ebay for around $50 (+ probably better disk).
I think I will try to buy one and to configure as a personal node.
On their website[1], they advertise Apollo as ready to use device though. It's more fair to compare it with product such as myNode One[2]. Forgetting the mining part, if someone would like to have own node, electrum server, rcp browser and even maybe something like btcpay server, why not to buy „tiny dektop computer” like for example Lenovo M72e? I see you may get one on ebay for around $50 (+ probably better disk).
I think I will try to buy one and to configure as a personal node.
Absolutely; a SBC gives you the advantage of size and power consumption, but I'm a big fan of x86 nodes. FYI, i just checked Lenovo M72e[3] and it's closer to Intel NUC rather than SBC. It use Intel processor. [1] https://www.futurebit.io/[2] https://mynodebtc.com/products/one[3] https://psref.lenovo.com/syspool/Sys/PDF/withdrawnbook/M72e.pdf |
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Will I be able to send the tBTC to a ledger nano wallet testnet after doing this?
Yes, to my knowledge Ledger does support that as you can enable the use of Testnet Bitcoin in Ledger Live. But I don't use Ledger hardware. As Ledger Live is crap in my opinion other wallets that support Ledger Nano hardware might also allow the use of Regnet or even Signet Bitcoins. Though not sure, as I haven't had the need or devices to test this myself. You could just use Electrum to connect to Ledger (the hardware wallet) manage Bitcoin Testnet. But you'll need Bitcoin Core if you want to use Signet network, although i doubt Ledger support Regnet. --snip--
For years the information is outdated, the best and only option is : https://testnet-faucet.mempool.co/Here he can use a vpn/tor with new identity and if he has multiple addresses, can use them to ask for 0.002 tbtc every minute. 500 requests will make a btc and it will take him 1-2 hours. 1 tbtc should be enough for most the tests he needs. Please do not abuse their faucet like that. It'll discourage owner from keep running the faucet and might prevent other people from testing their software or teaching new user. |
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And just in case, I'll ask you another question - are there any critical requirements for the processor platform of the wallet? I met a similar problem when testing the Symbol node, there were mandatory requirements for the processor, more precisely, for the set of instructions that it supports. It’s just that there are several more simple models of microcomputers at hand, I would like to test this wallet on them
I haven't tried Wasabi version 2, but AFAIK there's no specific processor requirement. But it looks like only begin to support arm64 recently[1], so it's possible you could encounter issue even after you download .deb for arm64 and use 64-bit OS. [1] https://github.com/zkSNACKs/WalletWasabi/pull/8287[2] https://github.com/zkSNACKs/WalletWasabi/issues/4051 |
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AFAIK there aren't CEX which force you to withdraw your coin. But IIRC there are few CEX (don't remember which one) which charge fee if you store coin for long time on their service. Although it's likely they do it to earn more profit rather than convincing people to use non-custodial wallet. Kraken CEO also being honest they cannot protect you if government is after you[1].
I think, and I could be wrong, it was either Poloniex or Bitfinex which did this. Used to get emails about it for crapcoins I'd have (yes, yes, I was a noob in 2016 too). They called it a maintenance fee, but I believed it wasn't for profit. It was only for coins that were low network usage that they were thinking to delist (since maintaining the wallets when nodes were frequently down was a hassle). They'd only levy the fee on dormant coins, the idea was to get as many users as possible to withdraw out so they could just delist and close down the maintenance. Just did quick search and it's poloniex which have such fee[1]. They call it "administrative fee", although it's not clear the duration to be classified as dormant account or whether it applies to all coin. BitFinex don't have such fee according to their FAQ[2]. One wallet turned CEX I definitely remember was Exodus. A few years back they decided to drop Dogecoin and if you didn't withdraw yours before upgrading to their new version, you'd simply not see your Doge anymore.
Are you sure you remember it correctly? Their website still show page for Dogecoin[3]. [1] https://support.poloniexus.com/hc/en-us/articles/360035354512-Poloniex-US-FAQ[2] https://support.bitfinex.com/hc/en-us/articles/213919589-What-fees-does-Bitfinex-charge[3] https://www.exodus.com/dogecoin-wallet |
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2. Does a memory pool gets full? Then what happens to the unconfirmed transaction, where do they go to?
Yes. By default the mempool size is 300 MB. (A node can have a different setting.) Take note 300MB refer to RAM usage. Transaction size on RAM is bigger than on disk since the transaction is de-serialized and contain additional information (e.g. RBF flag). At the moment i open https://mempool.space/, it reports 23MB memory usage although total size of the unconfirmation transaction is only 7.8 vMB. |
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I did wonder if I could take the node to a friends house and download the blockchain on his fast internet then bring it back and execute the aforementioned restrictions.
You can, just use tor and i think no further set up is needed, except switching your wifi. Take note using Tor would slow down the sync You can close Bitcoin Core to pause downloading.
You also can click connection icon to enable/disable networking.  The icon should look like this when you disable networking.  |
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