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Showing 20 of 167 results by ymgve2
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Board Development & Technical Discussion
Re: Another strange case of Bitcoin loss.
by
ymgve2
on 07/12/2024, 16:08:52 UTC
What's the actual seed phrase? Could be an example used in some github code.
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Topic
Board Development & Technical Discussion
Merits 3 from 2 users
Re: Radical New Discovery Could Double The Speed of Existing Computers
by
ymgve2
on 17/03/2024, 02:39:43 UTC
⭐ Merited by ABCbits (2) ,HeRetiK (1)
It is a garbage article. You absolutely need new hardware, the tests that show double speed are done with a dedicated AI addon card, as this better article details:

https://www.tomshardware.com/pc-components/cpus/multi-threaded-computing-across-multiple-processors-demoed-promises-big-gains-in-ai-performance-and-efficiency

It also requires that software is rewritten to take advantage of the new hardware, and some tasks show little to no gain.
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Board Development & Technical Discussion
Merits 3 from 3 users
Re: Strange addresses
by
ymgve2
on 05/03/2024, 17:49:07 UTC
⭐ Merited by odolvlobo (1) ,BlackHatCoiner (1) ,ABCbits (1)
What are "d-...", "m-..." and "s-..." addresses in Bitcoin?

they are nonstandard ways to identify transaction scripts that don't follow the standard address formats. I assume m- is multisig, not sure abut the others. I think blockchain.info uses those kind of "addresases".
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Topic
Board Development & Technical Discussion
Re: I found an old disk wallet.dat but
by
ymgve2
on 02/03/2024, 15:25:31 UTC
Was this a deleted file that you recovered? Deleted files can sometimes be corrupted, or just a fragment of a completely unrelated file. Have you tried opening the wallet.dat in a hex editor to see if it actually contains something and isn't just full of zeros?
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Board Development & Technical Discussion
Merits 2 from 1 user
Re: Modulus illusion
by
ymgve2
on 28/02/2024, 01:40:28 UTC
⭐ Merited by NotATether (2)
As far as I can tell you can't use the fact that key 1 and 2 are a known distance away from each other to discern anything about them. It's a single equation with two unknowns. Example: X + Y = 123, but X and Y could be 0 and 123, or they could be -113258881385746098181140976018376643534 and 113258881385746098181140976018376643657, or any other number.
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Board Development & Technical Discussion
Merits 7 from 3 users
Re: Collection of 18.509 found and used Brainwallets
by
ymgve2
on 14/02/2024, 16:43:13 UTC
⭐ Merited by LoyceV (4) ,ABCbits (2) ,Cricktor (1)
I noticed a while back that a lot of the brainwallets in the collection were filled with exactly 20108 satoshis, with phrases ranging from single words to some random seeming passwords. The repeated amount seemed weird, and I then discovered that someone back in 2014 had filled 456 addresses with exactly 20108 satoshis each.

I suspect this is some form of challenge/canary where each address is a different brainwallet, with varying levels of complexity in the phrase. Here are the transactions I've found so far:

https://www.blockchain.com/explorer/transactions/btc/16df5eed4c8d7ff965cf9d3676c7b71d80398714727792e71b7118abe3e16b03
https://www.blockchain.com/explorer/transactions/btc/b17d08f6b945a6a9edb526f2faaef9b825eaa27c14f454bd53bb423e44750e16
https://www.blockchain.com/explorer/transactions/btc/70ff6fc9ef96c80a435a0595477708630d092285ebeca30aa899d4dd409b1b45
https://www.blockchain.com/explorer/transactions/btc/16e72e11bfefe3222e5a3876d1038e49aaec8bc7c247212f8917c94e5b6fff49
https://www.blockchain.com/explorer/transactions/btc/594a3757b99943d4789fc588167cb40fd44e57f131f3822a3c9af2930ee01f52
https://www.blockchain.com/explorer/transactions/btc/4b07f21a2d9c408af5542288554aec49ac49195cf10295f1b17aa829d701a3dc
https://www.blockchain.com/explorer/transactions/btc/b71a1a9dc95319eae181d64865b16bf34deabdee0a689176df8aba450df34081
https://www.blockchain.com/explorer/transactions/btc/280933eae25e17a7a7274c4b672880b7c488c929872394dbc6ccacf9f68fc7c3
https://www.blockchain.com/explorer/transactions/btc/34b56d4dac1d43c8a7b8f922e044424094670445b1388fb89b79a0b607a2a28f
https://www.blockchain.com/explorer/transactions/btc/151f1b9dc77e7dfd77e2f23790d5dc6f8026602553fe64ff2ec4d641e644f9a8
https://www.blockchain.com/explorer/transactions/btc/c03fa7f40dc185e29b64c4ae421544364d9600fc1e960b1e0406b5fc1efc1843
https://www.blockchain.com/explorer/transactions/btc/78b5acfa93abd3d6761806dbcc88a82d9efc070bc798edf9cf70d75a8803351c
https://www.blockchain.com/explorer/transactions/btc/06f34556aa9fa495ae31fbb8134a66997f2a9672261a0d20c39d6eaa99ae323c
https://www.blockchain.com/explorer/transactions/btc/ccfd4b7ac82ef4dd944ab6174c77cef4cd80f12c3333443dbfd30133b9e4849f
https://www.blockchain.com/explorer/transactions/btc/39142cb1fce6109333c8672b00fa53cf1d75f4d5b23aac6204aae868df56bd65
https://www.blockchain.com/explorer/transactions/btc/5160e527cca3d98bcea61b70519d4d434df9e7da8f7bef62c114ce369747ab58

Now, to the real reson for the post - I just noticed that after almost a year of no activity, someone has started draining a few of these addresses again. I wonder if this means some more optimized brainwallet cracker has been developed, or someone has built a cracking machine that's much faster than previous attempts. The curious thing is that the drained coins go to both standard and segwit addresses, so it might indicate there are multiple people working on this cracking.

And as always, if you use a standard SHA256 brainwallet, this is another indication that your coins will be taken sooner or later.
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Topic
Board Development & Technical Discussion
Merits 3 from 2 users
Re: What are best and secured tools to create public keys ?
by
ymgve2
on 12/02/2024, 03:16:25 UTC
⭐ Merited by pooya87 (2) ,ABCbits (1)
If that description is correct, your sister messed up because she completely missed the step where she converts a private key into a public key, and uses the public key to feed into SHA256, then RIPEMD160, then Base58.

Missing that step created an invalid address that is completely unrecoverable.
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Topic
Board Development & Technical Discussion
Merits 6 from 2 users
Re: Introducing a New Cryptographic Solution for Bitcoin Recovery Seed Security
by
ymgve2
on 07/02/2024, 16:03:27 UTC
⭐ Merited by BlackHatCoiner (4) ,ABCbits (2)
Your encryption greatly increases the complexity of the seed at basically no benefit. There is already a feature to have an extra password alongside your passphrase built into BIP39.

Note that BIP39 words are picked to be relatively distinguishable from each another so even a misspelling or vague letter is recoverable. In contrast, your encrypted seed phrase is a mess of upper case, lower case, letters and symbols.

I changed a single letter in the encrypted seed phrase from lower case to upper case (something that is very likely to happen if someone writes it down), and when decrypted it completely broke without any warning that there was an error in the phrase.

This is less than useless, this is a dangerous piece of software that WILL make people lose their seed phrase.
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Board Development & Technical Discussion
Re: One more question regarding collisions
by
ymgve2
on 29/01/2024, 18:56:27 UTC
That LBC statistic must be incorrect because a single 4xxx level card should be able to do 90mkeys/sec entirely on its own, and 50-100 times that if it does a linear scan of the private key space.
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Topic
Board Development & Technical Discussion
Re: Bad P2PKH what means it Puzzle 66
by
ymgve2
on 22/01/2024, 15:32:41 UTC
it says BAD because someone has reported it as a scam address. Either the reporter entered the wrong address or some scammer entered the wrong address.
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Topic
Board Development & Technical Discussion
Re: Is there a list of public keys
by
ymgve2
on 24/12/2023, 10:47:45 UTC
Such list for now (just checked) is 26934 GiB in size.

It can be done with utxodump program.

You get txids, pubkeys, addresses and few other info.

I think you missed a decimal point somewhere. The Bitcoin blockchain itself isn't even 600GB yet.
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Topic
Board Development & Technical Discussion
Re: Could the BIP39 word list be completely replaced?
by
ymgve2
on 19/12/2023, 18:21:30 UTC
One thing that I haven't seen mentioned that is worth pointing out is that the sequence of words is the actual seed input used in the HD wallet calculations - the 128 or 256 bits you start with is just a way to create the string of words, the bits are not the seed phrase in itself.

This also means you can use any random garbage as a seed input for BIP39 wallets - you can, and someone already has, used stuff like "hello" as the seed phrase, and it works fine. Though most wallets will probably complain and/or disallow you to use something that doesn't follow the standard wordlist and checksum format.
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Topic
Board Development & Technical Discussion
Re: What's the point in solving the puzzle transaction?
by
ymgve2
on 17/12/2023, 07:00:27 UTC
Maybe you looked at the last addresses - output number 160 to 255 are empty because the security of a Bitcoin P2PKH address is 160 bits, so the puzzle creator decided it was useless to have a puzzle with private keys with more than 160 bits, and spread the value from them out over the lower addresses.
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Topic
Board Development & Technical Discussion
Re: i need your help, i forget to save the latest word of my seed
by
ymgve2
on 10/12/2023, 14:59:14 UTC
I think https://github.com/gurnec/btcrecover can be used if you got 11 of 12 words of your phrase
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Topic
Board Bitcoin Discussion
Merits 2 from 1 user
Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it
by
ymgve2
on 27/11/2023, 04:28:35 UTC
⭐ Merited by albert0bsd (2)
after playing a little with albert0bsd, it is published.
https://bitcointalk.org/index.php?topic=5475626.msg63227343#msg63227343

The 32 million keys in your solution must be sequential, which means it can't do 32 million arbitrary keys, which is what others thought you meant.
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Topic
Board Development & Technical Discussion
Re: lightweight database, for brute force using publickeys-32Mk =3.81MB(secp256k1)
by
ymgve2
on 27/11/2023, 04:19:37 UTC
If you sort and store partial keys you can search by using binary search, cutting search time from linear to log. For larger number of keys, this becomes much faster than your single bit storage. To reduce space requirements, only store public keys that fit a criteria (like ending with the six lower bits zero) when building. When searching, subtract until you hit the bit criteria, then look up with binary search.
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Board Development & Technical Discussion
Re: lightweight database, for brute force using publickeys-32Mk =3.81MB(secp256k1)
by
ymgve2
on 27/11/2023, 04:01:40 UTC
What's the advantage of this over storing full public keys at specific intervals?

Also as you target a larger number of keys, your time spent scanning for the bit sequence increases, unless you use some smarter data structures (which would not be as small as 3.81mb anymore)
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Topic
Board Development & Technical Discussion
Merits 4 from 1 user
Re: list of simple mathematical operations in ECC secp256k1 (Python).
by
ymgve2
on 22/11/2023, 16:01:11 UTC
⭐ Merited by albert0bsd (4)
OP when i saw the title "list of simple mathematical operations in ECC secp256k1 (Python)." I think that those funtions will be implemented directly in python only... I don't see why you get merit just by showing someone else code here.

If you want some of these functions in pure Python, I've got some older code that does it:
https://gist.github.com/ymgve/efc307e173ed9ea8cb2cac3c7462ed7b
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Topic
Board Bitcoin Discussion
Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it
by
ymgve2
on 14/11/2023, 01:32:36 UTC
;DLet me see, friends, is there a program that receives a photo file and then analyzes it, i.e. separates objects, people or animals, letters, numbers and colors and then makes a wallet from this information?
Yes, but you will have to wait a few years for it to be coded, since it's a new idea and also very insecure way, but if you already know what each color should represent, either they should represent 1 digit, decimal or hex, in which order? From which side/angle? Top to bottom-Left to right? What kind of algorithm is similar to convert people, animals to numbers and  what should be the factors, who decides  whether a man or woman should  convert to what exactly?
That requires an artificial intelligence with advanced algos, it's not an easy or even useful one to bother.




I mean, why do you think these keys are special? Why are you fixated on these keys in particular?
Ok, when I think about it, I might have mentioned them 10-12 times in total, so I'm not that much fixated, another thing is that when I find things interesting, I share them to see if others can find more things about them or not.

Just a simple example, when you multiply a point by lambda 2 times, you get 3 identical y coordinates, and if you divide or multiply those 3 points by the same scalar, the results will also have identical y coordinates, not to mention beta a1,a2, b1, b2 etc.
So when I share and talk about them, I hope someone who knows more and better to add to the discussion by providing more interesting facts.

That didn't answer my question. What makes 0x14551231950b75fc4402da1732fc9bebf more interesting than 0x14551231950b75fc4402da1732fc9bec0 or 0x14551231950b75fc4402da1732fc9bebe?
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Topic
Board Bitcoin Discussion
Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it
by
ymgve2
on 13/11/2023, 11:59:20 UTC
What makes them different than any other "low" range keys, like for example 0x123456789123456789123456789? How would they help in solving?
Guess that's the million dollar question, we want to know what sets them apart, what mathematical properties they have when being divided specifically compared to other keys. And if you are asking me about their differences with other keys, means you are also clueless like me and the rest of the world, until of course we find a clue.

It's a bit difficult for me to work behind a desk with a PC, I'm on a bed doing things slowly with a phone.😉

I mean, why do you think these keys are special? Because they are not. They are no more or less special than any other key.