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1801  Bitcoin / Hardware wallets / Re: Ledger Wallet Confidence? on: April 23, 2022, 11:52:36 AM
Do you think this is good move to securing my funds much better and more safe?

Yes, assuming you already check your device is genuine[1] and you already backup the recovery words.

Do you all have the better confidence in using these hardware wallets vs using just software?

When the comparison is between Ledger and closed-source software, i have higher confidence on Ledger.


[1] https://support.ledger.com/hc/en-us/articles/4404389367057-Is-my-Ledger-device-genuine-
1802  Bitcoin / Development & Technical Discussion / Re: Smart Contracts ..where are we now in their advancement ? on: April 23, 2022, 11:41:25 AM
Just curious if any breakthroughs have come in the SC space, or are we still where we were at when I last posted on here?

Aside from Taproot which now avaialble on mainnet, some people discuss RGB[1] and Taro[2] protocol.

Quote
Kind of like the cpunk mailing list, but for non-experts like myself?
That part is harder. I think searching the web and asking questions is the only way to learn things, because if you want to understand experts, you have to become an expert. Learning takes a lot of time, if you don't want to learn all needed technical details, then you can only ask questions, I can't see any other way.

Some technical from article Bitcoin Magazine[3] might be good source. They usually don't use meaningless buzzword or technical jargon when it's not needed.

[1] https://bitcointalk.org/index.php?topic=5382633.0
[2] https://bitcointalk.org/index.php?topic=5393585.0
[3] https://bitcoinmagazine.com/technical][url]https://bitcoinmagazine.com/technical[/url]
1803  Bitcoin / Bitcoin Technical Support / Re: Help a newbie; why is hashing not done once but twice during Bitcoin transaction on: April 22, 2022, 12:18:40 PM
Now I'm not sure how many nodes they have running, maybe it's not as decentralized as bitcoin? is that your problem with it?

Based on hardware requirement[1], it's definitely less decentralized compared with Bitcoin.

Now I'm not sure how many nodes they have running, maybe it's not as decentralized as bitcoin?
The number of nodes running is not so relevant with decentralization. The fact that they're using Proof-of-Stake and that there's a "Solana foundation" yells for centralization.

And there are many bigger concern and problem. The worst one is their cryptocurrency network down at least 3 times[2]. Justin Bons mention some of the problems[3], although i only verify few of them.

[1] https://docs.solana.com/running-validator/validator-reqs
[2] https://www.msn.com/en-us/money/other/solanas-network-goes-down-for-the-third-time-in-less-than-six-months/ar-AASrd1t
[3] https://twitter.com/Justin_Bons/status/1514646388688232456#m
1804  Bitcoin / Bitcoin Technical Support / Re: Missing 5 characters of a private key in Hexa format ; please help on: April 21, 2022, 11:38:04 AM
First of all, do you have additional information (either public key/address)? Brute forcing 1 million combination is fast, but far slower when you don't have those information.

I tried Finder Outer but work failed

What exactly do you mean by "work failed"?

is there 1 another solution...python scrypt or others?

If you're willing to write your own script, there are many library to to generate address from private key such as https://github.com/1200wd/bitcoinlib. You'll need to write private key/address on separate file, then check whether the address has balance (e.g. using list mentioned by @LoyceV).
1805  Other / Beginners & Help / Re: What's in for crypto wallet companies? on: April 21, 2022, 09:18:40 AM
3. Some probably collect data.

I expect most online or closed-source wallet collect decent amount of user personal data.

  • Dev's that hope to get some donations

Some Bitcoin Core developer show their Bitcoin address on their GitHub profile or social media page. I'd rather not provide specific example though.

  • Dev's that might get some sponsoring from private company's (i can imagine a hardware wallet vendors paying SPV wallet dev's to add support or extra features?)

Already happens few times[1-2]. Bitcoin Core even open for sponsorship[3].

  • (mostly) online wallets can use their gui to display advertisements

AFAIK Blockchain.com already doing that for long time. Mycelium also show ads on their Android wallet[4]



[1] https://coinmarketcap.com/alexandria/article/who-are-bitcoin-cores-developers
[2] https://bitcoinmagazine.com/business/gemini-sponsors-bitcoin-core-maintainer-fanquake
[3] https://bitcoin-rpc.github.io/en/about/sponsorship/programme/
[4] https://github.com/mycelium-com/wallet-android/blob/master/mbw/src/main/java/com/mycelium/wallet/lt/api/GetAds.java
1806  Other / Meta / Re: Please have a look at this crap (1xBit). on: April 19, 2022, 11:40:24 AM
As per his trust rating the account is also hacked but as per his bpip.org merit information he has sent 57 merits to 49 profiles while he has only earned 11 merits over time so does this mean he was merit source or what?

You forget initial merit airdrop for existing user which also drop some sMerit depending on their rank or how active they are. While i don't remember the exact drop number, it's unlikely he's merit source since he only send 57 merit so far.
1807  Alternate cryptocurrencies / Altcoin Discussion / Re: Some projects are fated to doom? on: April 19, 2022, 09:48:41 AM
Hi fellow Bitcointalknaires, to all this who have been here before me and those who have been investing in crypto for the past years have there been any cases of projects with a good hardworking team that give their best shots and yet the project still fails? Tell me one project that face this same fate.

Hard work doesn't always equal to good work, especially when it's build on top of fragile foundation (e.g. clone another coin source code, fork existing coin network or token without any practical usage).

--snip--
The 0.24x on NEO means what? The entire returns since 2017? That's a big lie and not accurate, in 2020 I bought some NEO coins for 6$ each and I sold them for 118$ in 2021, how much return is this? Are you for real? The problem lies with those that bought at high price and sell at another high price not those that bought at All time low.

It simply mean NEO price ratio between 2017-12-17[1] and 2022-01-24[2]. 0.24x simply means NEO price ratio between those 2 date. While it's biased, i wouldn't say it's a lie.

[1] https://coinmarketcap.com/historical/20171217/
[2] https://coinmarketcap.com/historical/20220124/
1808  Bitcoin / Development & Technical Discussion / Re: Bitcoin Core wallet.dat specification on: April 18, 2022, 10:33:44 AM
I'm not C# programmer, but i know 2 tools/library which aimed to read/recover wallet.dat. Take note both haven't been updated in long time,
https://code.google.com/archive/p/bitcoinsharp/
https://github.com/hg5fm/WalletRecovery

Alternatively, you could use Berkeley DB reader for C# and check some known entries of wallet.dat https://bitcoin.stackexchange.com/a/3177.
1809  Bitcoin / Development & Technical Discussion / Re: How to limit the number of decimal numbers obtained during calculation and used? on: April 17, 2022, 11:18:49 AM
You are getting implementation-dependent garbage numbers. It is hard to say how to get those numbers, because without code, we have no idea, where you made a mistake in your own code.

But I guess it is related to float precision. Maybe check basic things, for example that adding 0.1 ten times gives you exactly 1.

There's even website about it at https://0.30000000000000004.com/.

I don't know modmath / keymath

OP might be referring to this repository, https://github.com/albertobsd/ecctools.
1810  Bitcoin / Bitcoin Discussion / Re: Challenge or Scam? 1PfNh5fRcE9JKDmicD2Rh3pexGwce1LqyU on: April 16, 2022, 12:38:20 PM
I wouldn't bother with such challenge when they don't respect GPLv3 which used by WifSolverCuda[1]. Besides, it's more sensible to rent GPU on remote server or ask professional instead which have lots of GPU.

Quote from: phrutis/wif500
Why is the program without source codes?
The correct ranges and other parameters are sewn into the WifSolverCuda program.
Knowing them, the user can find the key on his own and take everything for himself.

[1] https://github.com/PawelGorny/WifSolverCuda/blob/main/LICENSE
1811  Bitcoin / Development & Technical Discussion / Re: lattice-attack || how to run without error on: April 16, 2022, 12:22:41 PM

Some problems with install fpylll

Developer using Ubuntu >= 20.04
So try on Ubuntu 20.04

pip install git+https://github.com/bitlogik/lattice-attack
pip install git+https://github.com/fplll/fpylll.git

All command try installs not successful both on os windows and Linux

using conda not successful too
conda install -c conda-forge fpylll

all methods include update apt too

sudo add-apt-repository universe
sudo apt update
sudo apt install python3-fpylll

pip install Cython

all fail


There might be problem with your Ubuntu 20.04 or library's setup.py. I tried it on Debian 11 (inside VM) and could run the library without any problem.

Code:
git clone https://github.com/bitlogik/lattice-attack
cd lattice-attack/
sudo apt install python3-cryptography python3-fpylll
python3 gen_data.py # generate example data
python3 lattice_attack.py -f data.json # perform attack with example data

This is the output.

Code:
 ----- Lattice ECDSA Attack ----- 
Loading data from file data.json
Running with 6 bits of k (LSB)
Starting recovery attack (curve SECP256K1)
Constructing matrix
Solving matrix ...
LLL reduction
Key found \o/
0xb75d59be7755c7af999687b769aeac541422ace964eb92d00f1c9a8017b1b7f9
1812  Bitcoin / Development & Technical Discussion / Re: Im Working On Mining Os That Able To Mine Bitcoin With Gpu/Cpu! on: April 16, 2022, 09:45:59 AM
If it was always about software and not hardware, don't you think we would be having so many such software that would let GPUs/CPUs be very profitable against the latest ASICs?
The kind of pool you are planning to use is even going to eat up some of your profits since they will do the exchanging for you.

Stop daydreaming brother.

yeah, after some research I found what you say true,so I’m gonna change to slush pool, and that not a issue, and did you say my os gonna make your gpu better than latest asic? Bro, asic price are high, some ppl are poor to buy a asic and just buy some gpus, in this case this ppl gonna need to search the biggest hashrate, and maybe my os can give him this hashrate, I’m gonna try to write some algorithms and memory allocations to make mining experience with GPU better, and y’a, btw C is not easy like you think

Since you said "Mine Bitcoin With Gpu/Cpu!", i'd like to mention that GPU/CPU is far slower and less efficient than ASIC. Why don't you check try to calculate the profit loss based on SHA-256 hashrate for CPU/GPU[1] with any online Bitcoin mining calculator[2]?

[1] https://en.bitcoin.it/wiki/Non-specialized_hardware_comparison
[2] https://www.coincalculators.io/coin/bitcoin
1813  Bitcoin / Bitcoin Technical Support / Re: Newbie help; What happens when the combine transaction fee and block reward ar on: April 15, 2022, 11:54:59 AM
My questions;
1. Does these apply to every transactions?

No.

2. If no, please explain the phenomenon behind it?

There's no rule which forbid you to spend output from non-coinbase transaction with less than 100 confirmation (even if it has 0 confirmation).

3. What happens when combined reward of the block with its transaction fee is bigger than the output value

The unclaimed amount of Bitcoin is lost forever.
1814  Bitcoin / Bitcoin Technical Support / Re: Help a newbie; why is hashing not done once but twice during Bitcoin transaction on: April 14, 2022, 11:38:12 AM
Quote
Blockchain.com timestamps each transaction inside each block. Not every transaction has the same timestamp.
As above, this is when blockchain.com's node first learns of that transaction. This is not related to bitcoin at a protocol level.
well it's a nice feature to be able to see when a transaction was done. maybe they should add that to the protocol. everything should have a timestamp i would think. or some way of deciding the ordering of objects in time. even down to the transaction level. if blockchain.com can do it why can't bitcoin?

It's possible, but
1. It introduce small bloat. Could be 4 or 8 bytes depending on whether you concerned about year 2038/2106 problem.
2. Since transaction could broadcaster far before it's included on block, it's hard to verify acuuracy of the timestamp on transaction.

Quote
You should spend few minutes on website which list CVE (Common Vulnerabilities and Exposures) such as https://www.cvedetails.com/cvss-score-distribution.php (https://www.cvedetails.com/cvss-score-distribution.php). If you browse The "Top 50", you'll find out popular product/vendor have hundred to thousand CVE.

that's because they don't care about quality, they are concerned with pumping crap out the door. getting it to market to make more bucks.

But most of those vendor are big IT company with big net worth. Can you give few example of vendor or application who cares about quality?
1815  Economy / Reputation / Re: marwell continually posting links to fake wallets. on: April 14, 2022, 09:56:04 AM
I did further research and it's very likely marwell post link to fake wallet, flag supported. Here are some link that could be useful for those who want to double-check,

[1] https://web.archive.org/web/20200731065900/https://rahakott.io/, archive of original website.
[2] https://web.archive.org/web/20210825192216/https://rahakott.net/, archive of fake website.
[3] https://web.archive.org/web/20210706094420/https://rahakott.ch/, archive of another fake website.
[4] https://bitcointalk.org/index.php?topic=2408603.0, ANN thread which seems to be legit. OP periodically bumped it and answered other member question.
[5] https://bitcointalk.org/index.php?topic=5046036.0, another ANN thread with little activity.
[6] https://bitcointalk.org/index.php?topic=5274518.0, scam accusation for another fake website (see [3]).
1816  Bitcoin / Development & Technical Discussion / Re: MoneyRange() allows zero? on: April 13, 2022, 11:56:20 AM
I can see how fees can be zero, but is it possible for CAmount in a transaction (e.g. p2wh address1 --> address2) be zero?

It's definitely possible if address2 actually refer to OP_RETURN output.
1817  Bitcoin / Development & Technical Discussion / Re: lattice-attack || how to run without error on: April 12, 2022, 12:02:08 PM
All question you asked already answered on the repository.

what is data.json Sad

From https://github.com/bitlogik/lattice-attack#use, data.json contain some information needed to perform lattice attack.



how to make it

You can either make it manually or use gen_data.py

Code:
python3 gen_data.py

Code:
python3 gen_data.py -f data1.json -m "HelloYou" -c SECP256R1 -b 8 -t MSB -n 50

how to run without error

You need to specify what kind of error you encountered. Have you fulfilled requirements which mentioned at https://github.com/bitlogik/lattice-attack#requirements?
1818  Bitcoin / Bitcoin Technical Support / Re: Installing bitcoin core on fedora on external SSD drive on: April 12, 2022, 11:31:50 AM
Okay, I managed to run it the first time and it created a config file in which I can change the datadir. It now tries to install it in the proper place when I rerun it, but thinks I only have 3 GB free... (I have a free terabyte)

https://imgur.com/a/tyuzsl3 for screenshot

Since you mentioned that you install Bitcoin Core via Snap, have you checked whether you give Bitcoin Core permission to access your external drive?
1819  Bitcoin / Bitcoin Technical Support / Re: Lost part of the mnemonic phrase on: April 12, 2022, 11:22:19 AM
Brute force 4 missing Electrum words isn't cheap, so i have to ask whether you already think another way to restore your Bitcoin? For example,
1. Check whether your OS made backup of that .txt file. For example, Windows have feature "Enable Previous Version" which AFAIK enabled by default.
2. If you accidentally delete Electrum wallet file, you could use file recovery tool software (such as Recuva) to restore the file.

There are two tools that I know that you can use to brute force the missing 4 words BTCrecovery and FinderOuter Bitcoin recovery tool.
You can find the source of BTCrecovery here https://github.com/gurnec/btcrecover
And FinderOuter here https://bitcointalk.org/index.php?topic=5214021.0

FinderOuter is more user-friendly, but 2048^4 is rather large combination and FinderOuter lacks GPU acceleration.
1820  Bitcoin / Development & Technical Discussion / Re: Can Quantum Computer's destroy Blockchain and Bitcoins[SHA-256 specifically] on: April 11, 2022, 12:17:36 PM
Don't worry, people know about it and there are some discussions on our mailing list: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022-April/020209.html

The mailing mention NTRU would make node perform extra validation, yet NTRU implementation show it's far faster than ECC-NIST (closest one to cryptography which Bitcoin use). Can someone explain why?


Source: https://tbuktu.github.io/ntru/
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