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Taproot proposal Development & Technical Discussion
Percentage of recently (last 144) signaling blocks is 86.8% = 125/144https://tap…
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n/a | j2002ba2 | May 21, 2021, 05:57:09 AM |
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Locking up premine for a period of time or number of blocks Altcoin Discussion
You are gravely mistaken. Satoshi mined just one block for no more than six days…
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n/a | j2002ba2 | May 19, 2021, 12:06:43 PM |
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Locking up premine for a period of time or number of blocks Altcoin Discussion
“Premining” is actually a made-up word, that we've defined it as a creation of s…
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n/a | j2002ba2 | May 19, 2021, 11:30:38 AM |
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Neural Networks and Secp256k1 Development & Technical Discussion
NNs can capture very hard dependecies, depends on type and number of hidden laye…
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n/a | j2002ba2 | May 15, 2021, 07:46:43 AM |
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Neural Networks and Secp256k1 Development & Technical Discussion
Using NN for cracking cryptographic functions is pointless. NN can capture only…
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n/a | j2002ba2 | May 14, 2021, 09:19:45 AM |
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Science Fair Project to trap Bitcoin private keys using Kangaroos! Bitcoin Discussion
Most success in ECDLP has been in Pollard-Rho, like a '6' character you followin…
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n/a | j2002ba2 | April 23, 2021, 04:31:14 AM |
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Representing fractional satoshis in difficulty-like format Development & Technical Discussion
QuoteA soft fork must restrict the transactions that are valid. Your proposal in…
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n/a | j2002ba2 | April 15, 2021, 11:49:32 AM |
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Representing fractional satoshis in difficulty-like format Development & Technical Discussion
QuoteWhen someone spends outputs that have a fraction of a satoshi, the transact…
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n/a | j2002ba2 | April 12, 2021, 05:56:32 PM |
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Why is it necessary to mine the genesis block? Development & Technical Discussion
What exactly do you prove once you mine a genesis block? That you can achieve it…
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n/a | j2002ba2 | April 07, 2021, 10:31:12 AM |
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Is there secp25k1 for the cuda api on C ++? Development & Technical Discussion
Fastest parts of secp256k1 for CUDA I know of are in https://github.com/JeanLucP…
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n/a | j2002ba2 | April 05, 2021, 11:21:55 AM |
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security Beginners & Help |
n/a | j2002ba2 | April 04, 2021, 06:02:22 AM |
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PBKDF2 questions Development & Technical Discussion
Didn't know this website thank for sharing. Do you know what format are MESSAGE…
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n/a | j2002ba2 | March 31, 2021, 08:37:52 AM |
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PBKDF2 questions Development & Technical Discussion
So PBKFD2 is HMAC-SHA512 with two parameters :1) password as "mnemonic sentence"…
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n/a | j2002ba2 | March 31, 2021, 06:22:41 AM |
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Questions regarding Pollard's Kangaroo/Lambda Development & Technical Discussion
This function is used to compute the next kangaroo hop (just insert the current…
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n/a | j2002ba2 | March 10, 2021, 06:10:11 AM |
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Bitcoin puzzle (3,350.00 BTC's ) Bitcoin Discussion
Before someone appears saying that the signatures do not exist and are not real…
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n/a | j2002ba2 | March 04, 2021, 07:19:30 AM |
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Why is my block being rejected for having "high hash"? Development & Technical Discussion
Looks like it fails when you include transaction other than coinbase. Witness co…
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n/a | j2002ba2 | February 23, 2021, 04:36:56 AM |
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Why is my block being rejected for having "high hash"? Development & Technical Discussion
Looks like "version", "time", "bits", and "nonce" are correct.hashPrevBlock and…
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n/a | j2002ba2 | February 22, 2021, 01:22:22 PM |
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Why is my block being rejected for having "high hash"? Development & Technical Discussion
Using bitcoin core 0.21.0 on RegTest.Block #101 with the default RegTest target…
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n/a | j2002ba2 | February 22, 2021, 11:16:19 AM |
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Elliptic Curve Cryptography and Government Backdoors Development & Technical Discussion
In Satoshi Nakamoto's day there were no vulnerabilities like the MOV Attackhttps…
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n/a | j2002ba2 | February 20, 2021, 05:44:02 PM |
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Assuming block.vtx.size() return tx count why is it used for block size check? Development & Technical Discussion
You'd have to ask Satoshi about this. Code snippet from v0.1.0 (or 0.1.3):Code:b…
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n/a | j2002ba2 | February 20, 2021, 06:42:18 AM |
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Base58 (P2SH) to Bech32 (P2WPKH) Converter Development & Technical Discussion
Just how to get Bitcoin Addresses in (P2WPKH) format from ripemd160 hash?You nee…
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n/a | j2002ba2 | February 19, 2021, 01:12:46 PM |
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Storing the seed. Is this method efficient enough? Development & Technical Discussion
That is 12*11*10*...*1 or 12! = 479,001,600 and it is not at all hard to check 4…
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n/a | j2002ba2 | February 18, 2021, 11:21:24 PM |
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One-way function vs Non-invertibility Development & Technical Discussion
Non-invertable means the inverse of a function does not exist ...By this definit…
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n/a | j2002ba2 | February 15, 2021, 10:56:28 AM |
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Old BIP32 flaw lets you derive the master private key - WONTFIX? Development & Technical Discussion
Only non-hardened child with leaked private key, and leaked parent extended publ…
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n/a | j2002ba2 | February 11, 2021, 08:21:58 PM |
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Mining scripts on quantum computers Development & Technical Discussion
If quantum computers ever work, then by using Groover's algorithm mining difficu…
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n/a | j2002ba2 | January 29, 2021, 05:58:58 AM |
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Why Pairgen is fast ? Development & Technical Discussion
Vanitygen searches for specific prefix. Pairgen searches for matching prefixes.T…
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n/a | j2002ba2 | January 27, 2021, 06:02:44 AM |
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The «beauty» of probability and pure randomness Development & Technical Discussion
Still, according to this counting argument it's absurdly unlikely for there to b…
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n/a | j2002ba2 | January 22, 2021, 05:57:34 AM |
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Maths Q1 - address to key ratio Development & Technical Discussion
Say someone was giving you clues to their private key. For each character they…
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n/a | j2002ba2 | January 05, 2021, 08:01:19 AM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
I have much more questions to step 9.As we see there's checking leading to point…
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n/a | j2002ba2 | December 09, 2020, 11:28:19 PM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
I missed something from J+A point addition - step 14 in 3.22. There should be ad…
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n/a | j2002ba2 | December 09, 2020, 03:24:35 PM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
I still can't understand how You optimizing gates count by combining bits.The mo…
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n/a | j2002ba2 | December 08, 2020, 10:35:55 AM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
Point additionIn affine coordinates: 1*inversion + 2*mul-mod-p + 6*sub-mod-p =…
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n/a | j2002ba2 | December 08, 2020, 05:30:22 AM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
Multiplication is cheaper since p is fixed.1-bit full-add: 2*XOR + 2*AND + 1*OR1…
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n/a | j2002ba2 | December 08, 2020, 03:50:08 AM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
For binary euclidean gcd the maximum number of iterations is
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n/a | j2002ba2 | December 07, 2020, 04:15:27 PM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
From "SPA vulnerabilities of the binary extended Euclidean algorithm":Binary ext…
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n/a | j2002ba2 | December 04, 2020, 05:51:41 PM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
Most probably I made a mistake in binary extended gcd. It should be slower than…
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n/a | j2002ba2 | December 04, 2020, 05:46:35 PM |
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Theoretical minimum # of logic operations to perform privkey->pubkey(secp256k1) Development & Technical Discussion
But unlike SHA256 (or hashes in general) there aren't any bitwise operations in…
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n/a | j2002ba2 | December 03, 2020, 07:19:22 AM |
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The Lightning Network FAQ Development & Technical Discussion
All major implementations now support "wumbo". It allows node operators to creat…
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n/a | j2002ba2 | September 19, 2020, 09:15:54 AM |
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Half of any bitcoin (crypto) public key - (public key half) Development & Technical Discussion
In secp256k1 there are two important primes - the prime p which is used for coor…
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n/a | j2002ba2 | September 17, 2020, 03:01:51 PM |
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Half of any bitcoin (crypto) public key - (public key half) Development & Technical Discussion
Is it possible without the private key to divide a point by 2 ?why not. private…
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n/a | j2002ba2 | September 11, 2020, 06:13:50 AM |
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VanitySearch (Yet another address prefix finder) Development & Technical Discussion
Do you have any references for the work required for the best multi-target discr…
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n/a | j2002ba2 | September 07, 2020, 05:48:18 PM |
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Vanity addresses are unsafe Development & Technical Discussion
As a seed can generate billions of addresses [1], it would be as efficient as a…
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n/a | j2002ba2 | August 20, 2020, 02:04:45 PM |
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basic probability Development & Technical Discussion
No. The zeroes are independent. The probability of having 5 (hexadecimal) leadin…
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n/a | j2002ba2 | August 04, 2020, 08:47:46 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
Hello,Regarding https://bitcointalk.org/index.php?topic=5265788.0, would it be p…
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n/a | j2002ba2 | August 01, 2020, 12:00:59 AM |
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Do invalid keys in BIP44 path matter? Development & Technical Discussion
A 256-bit number bigger than n modulo n is at most only 128 bits.It actually is…
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n/a | j2002ba2 | July 21, 2020, 03:08:24 AM |
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Do invalid keys in BIP44 path matter? Development & Technical Discussion
Follow up question: Why was the decision made that if the left 256 bits are grea…
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n/a | j2002ba2 | July 20, 2020, 03:37:06 PM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
So...how do use a kangaroo without pub key? What all of you looking for without…
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n/a | j2002ba2 | July 20, 2020, 03:44:01 AM |
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I don't believe Quantum Computing will ever threaten Bitcoin Development & Technical Discussion
QC scaling as 2n is a common misconception. As n grows, the system scales worse…
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n/a | j2002ba2 | July 19, 2020, 05:13:23 AM |
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I don't believe Quantum Computing will ever threaten Bitcoin Development & Technical Discussion
Why do you need a quantum computer to attack a bitcoin - I don't understand at a…
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n/a | j2002ba2 | July 17, 2020, 10:08:23 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
Sorry, it is inconvenient to share information in public. But I can tell you tha…
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n/a | j2002ba2 | July 17, 2020, 03:14:42 AM |
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Using secp256k1 endomorphism Development & Technical Discussion
@Jean_Luc Your code for EEA seems incorrect. Here are the correct values:Code:s7…
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n/a | j2002ba2 | July 03, 2020, 08:53:22 AM |
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Luck when selecting Secp256k1 parameters Development & Technical Discussion
When a=0, for every prime p>=5 and p=2 mod 3, we get number of points n=p+1, whi…
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n/a | j2002ba2 | July 02, 2020, 02:26:47 PM |
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HONEYWELL Quantum Computer: what does it mean to BTC Bitcoin Discussion
It isn't just physical vibrations, it's any interaction with the world outside t…
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n/a | j2002ba2 | June 29, 2020, 06:04:28 AM |
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Bitcoin, cryptos and the imminent threat of a Quantum Computer Development & Technical Discussion
Processing power of quantum computers may increase more rapidly relative to clas…
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n/a | j2002ba2 | June 28, 2020, 10:12:04 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
if i am not wrong, you win 115bit puzzle in 13 days, and you count 120 puzzle is…
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n/a | j2002ba2 | June 22, 2020, 02:32:10 PM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
This would work properly only when the private key of P is zero mod 32. P=k*G, k…
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n/a | j2002ba2 | June 17, 2020, 12:00:00 PM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
If you change the jumps old DPs are useless.And I moved the point P in this new…
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n/a | j2002ba2 | June 17, 2020, 11:24:11 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
If you change the jumps old DPs are useless.And I moved the point P in this new…
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n/a | j2002ba2 | June 17, 2020, 10:26:50 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
Jumps (the points) are the same, only their private keys are different;instead o…
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n/a | j2002ba2 | June 17, 2020, 10:20:20 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
Jumps (the points) are the same, only their private keys are different;instead o…
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n/a | j2002ba2 | June 17, 2020, 10:10:48 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
@mrxtrafIn the private key group (mod n) we can add, negate, and invert - this a…
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n/a | j2002ba2 | June 14, 2020, 07:47:38 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
@mrxtrafIn the private key group (mod n) we can add, negate, and invert - this a…
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n/a | j2002ba2 | June 14, 2020, 05:37:21 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
IMO OpenCL on AMD would work only if written in assembler. I lost the race for #…
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n/a | j2002ba2 | June 02, 2020, 10:26:32 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
An other things is when you reach ~sqrt(n) jumps, kangaroo starts to walk their…
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n/a | j2002ba2 | May 26, 2020, 06:51:38 AM |
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Old version of bitcoin. Bitcoin 0.2 download Development & Technical Discussion
There's a windows build of v0.2.10 from Laszlo Hanyecz (bitcoin pizza).http://he…
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n/a | j2002ba2 | May 22, 2020, 04:56:35 AM |
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There's something Satoshi didn't think of. Bitcoin Discussion
Recently we had our 3rd halving, cutting the bitcoins per block to 6.25If price…
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n/a | j2002ba2 | May 18, 2020, 03:25:39 PM |
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Old version of bitcoin. Bitcoin 0.2 download Development & Technical Discussion
Hi,it is possible to download an old version of bitcoin, as bitcoin 0.2 for wind…
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n/a | j2002ba2 | May 18, 2020, 03:09:44 PM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
In order for a collision to happen, one needs at least 1 DP per kangaroo. This i…
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n/a | j2002ba2 | May 14, 2020, 03:04:50 PM |
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Private Key Restorer Development & Technical Discussion
guys i have Etherium private key was saved in notepad accidently my kids press s…
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n/a | j2002ba2 | May 10, 2020, 04:41:29 AM |
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Pollard's kangaroo ECDLP solver Development & Technical Discussion
This might be interesting:https://www.researchgate.net/publication/339319953_Usi…
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n/a | j2002ba2 | May 07, 2020, 09:37:15 AM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
Sorry for the post off topic ... but can someone develop a tool to solve this?p…
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n/a | j2002ba2 | February 16, 2020, 08:13:12 AM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
Sorry for the post off topic ... but can someone develop a tool to solve this?p…
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n/a | j2002ba2 | February 15, 2020, 06:06:14 PM |
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Something Odd? Thinking caps on guys. Development & Technical Discussion
['fruit', 'stone', 'enrich', 'cupboard', 'vendor', 'idle', 'alter', 'ensure', 'h…
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n/a | j2002ba2 | September 12, 2019, 06:27:55 AM |
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I don't believe Quantum Computing will ever threaten Bitcoin Development & Technical Discussion
We all know that Quantum Computing could significantly improve the power of comp…
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n/a | j2002ba2 | August 23, 2019, 10:38:23 AM |
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[ARCHIVE] Bitcoin challenge discusion Off-topic
What is your expected time for #105?I was using 4x Tesla V100 for it. Here is a…
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n/a | j2002ba2 | July 21, 2019, 08:18:49 AM |
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[ARCHIVE] Bitcoin challenge discusion Off-topic
#100 - af55fc59c335c8ec67ed24826Lucky with only 69% of the expected time - 1d 22…
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n/a | j2002ba2 | July 21, 2019, 01:37:07 AM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
https://imgur.com/a/f3zTmTaKey #95 in 10 1/2 hours on a single machine? That's i…
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n/a | j2002ba2 | July 12, 2019, 12:48:37 PM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
https://imgur.com/a/f3zTmTa
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n/a | j2002ba2 | July 12, 2019, 05:53:45 AM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
There is nothing "hacked" so far. The Distributed Pollard Kangaroo algorithm is…
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n/a | j2002ba2 | July 11, 2019, 07:14:49 AM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
Currently not an issue for those that use proper secure random full entropy 256…
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n/a | j2002ba2 | July 08, 2019, 07:03:50 PM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
112 bit is the current record for the ECDLP (Elliptic Curve Discrete Logarithm P…
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n/a | j2002ba2 | June 13, 2019, 06:26:09 AM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
I don't understand thoroughly the algorithm can you explain in short why the si…
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n/a | j2002ba2 | June 12, 2019, 04:08:17 AM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
This is correct only for BSGS (Baby-Step-Giant-Step).Using Pollard Rho method, t…
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n/a | j2002ba2 | November 25, 2018, 02:24:32 PM |
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Bitcoin puzzle transaction ~32 BTC prize to who solves it Bitcoin Discussion
@arulberoIf you have the public key and the search space is 2^160 how fast can y…
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n/a | j2002ba2 | November 18, 2018, 05:24:15 AM |
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