racminer
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February 22, 2019, 07:13:56 PM |
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5 years pass quickly :-D LOL i have 40Mkeys per gpu(Is there any way to improve?)
Good speed increase if you only want to target the #61 puzzle address. - Only -c
- Only one target: 1AVJKwzs9AskraJLGHAZPiaZcrpDr1U6AB
- Make sure to use latest BitCrack version from github. There have been good speed improvements to the OpenCL version recently
- Check your settings. For Cuda I have better performance with more threads (~512) instead of high processes
GL HF One target or 45000 target won't change much. Try this bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 72 -t 256 -p 2048 Look here [2019-02-22.19:47:44] [Info] Compression: compressed [2019-02-22.19:47:44] [Info] Starting at: 0000000000000000000000000000000000000000000000000000000000000001 [2019-02-22.19:47:44] [Info] Ending at: F000000000000000000000000000000000000000000000000000000000000000 [2019-02-22.19:47:44] [Info] Counting by: 000000000C6323BDF5ED6969A34C18CA8E09B4CE2B7A6ED00F931CBAE8DBF0E8 [2019-02-22.19:47:44] [Info] Compiling OpenCL kernels... [2019-02-22.19:47:51] [Info] Initializing Ellesmere [2019-02-22.19:47:53] [Info] Generating 37,748,736 starting points (1440.0MB) [2019-02-22.19:48:05] [Info] 10.0% [2019-02-22.19:48:15] [Info] 20.0% [2019-02-22.19:48:23] [Info] 30.0% [2019-02-22.19:48:33] [Info] 40.0% [2019-02-22.19:48:42] [Info] 50.0% [2019-02-22.19:48:51] [Info] 60.0% [2019-02-22.19:49:00] [Info] 70.0% [2019-02-22.19:49:09] [Info] 80.0% [2019-02-22.19:49:18] [Info] 90.0% [2019-02-22.19:49:20] [Info] 100.0% [2019-02-22.19:49:20] [Info] Done [2019-02-22.19:49:20] [Info] Loading addresses from 'btc.txt' [2019-02-22.19:49:36] [Info] 2,749,473 addresses loaded (52.4MB) Ellesmere 2368/6509MB | 2749473 targets 81.53 MKey/s (69,684,166,656 total) [00:13:53] I get over 80MKey/s on one Rx480 with 2,749,473 targets As a general rule -b is twice your computing unit (Rx480 have usually 36) -t 256 (I believe it is the max) -p (depends on you GPU ram) 1024 for 4Gb and 2048 for 8Gb
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netlakes
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February 22, 2019, 07:51:32 PM |
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Is that correct?
add 61 from: dec:1152921504606846976- hex:1000000000000000 to: dec:2305843009213693953- hex:2000000000000001
add62 from: dec:2305843009213693953 - hex:2000000000000001 to: dec:4611686018427387904 - hex:4000000000000000
addr63 from: dec:4611686018427387904- hex:4000000000000000 to: dec:9223372036854775808 - hex:8000000000000000
addr64 from: dec:9223372036854775808 - hex: 8000000000000000 to: dec:18446744073709551616 - hex:010000000000000000
addr65 from: dec:18446744073709551616 - hex:010000000000000000 to: dec:36893488147419103232 - hex: 020000000000000000
Addr61Range 0x1000000000000000:0x1FFFFFFFFFFFFFFF Addr62Range 0x2000000000000000:0x2FFFFFFFFFFFFFFF Etc Tks How do you share works among your cards? We can PM if you wish. Hello I created the addrdata.txt file with 45,000 abandoned addresses, including those of the puzzle I am currently scanning address 61 bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 36 -t 256 -p 4096 All help and tips are welcome! :-D Hi Netlakes in you command: bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 36 -t 256 -p 4096 with -d 1 you use one card. I understand you have 36 rx480, right? (newbies can't PM you lol ) Yes, i have 6 rigs with 6 rx480 each for each rig i run multiple instances like that: bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 36 -t 256 -p 4096 bc.exe -c -u -d 2 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 36 -t 256 -p 4096 bc.exe -c -u -d 3 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 36 -t 256 -p 4096 bc.exe -c -u -d 4 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 36 -t 256 -p 4096 bc.exe -c -u -d 5 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 36 -t 256 -p 4096 bc.exe -c -u -d 6 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 36 -t 256 -p 4096 This way you are scanning the same range 1000000000000000:1FFFFFFFFFFFFFFF for all cards !!!! that's no good. the range 1000000000000000:1FFFFFFFFFFFFFFF should be split equally, you could do it manually or using the command --share M/N for each rig. for sure! I'm setting it up again! I'll add also added --continue last.txt OK I suppose you are getting around 100Mkeys/sec search rate per GPU? So with 36*100 Mkeys/sec and if we assume that the private key for puzzle #61 is at mid range between 0x10000000000000 and 0x1FFFFFFFFFFFFFFF, you should expect to find this key in 5 years. 5 years pass quickly :-D LOL i have 40Mkeys per gpu(Is there any way to improve?) use b 36 t 512 p 2304 CL_INVALID_WORK_SIZE
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netlakes
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February 22, 2019, 07:58:02 PM |
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5 years pass quickly :-D LOL i have 40Mkeys per gpu(Is there any way to improve?)
Good speed increase if you only want to target the #61 puzzle address. - Only -c
- Only one target: 1AVJKwzs9AskraJLGHAZPiaZcrpDr1U6AB
- Make sure to use latest BitCrack version from github. There have been good speed improvements to the OpenCL version recently
- Check your settings. For Cuda I have better performance with more threads (~512) instead of high processes
GL HF One target or 45000 target won't change much. Try this bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 72 -t 256 -p 2048 now 50Mkey/s
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racminer
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February 22, 2019, 08:08:37 PM |
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What memory size are your rx480?
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netlakes
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February 22, 2019, 08:12:55 PM |
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What memory size are your rx480?
4GB I downloaded the latest version of bitcrack! Is compiling .... I think it was the old version that was giving me half of mkey / s
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racminer
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February 22, 2019, 08:17:56 PM |
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What memory size are your rx480?
4GB I downloaded the latest version of bitcrack! Is compiling .... I think it was the old version that was giving me half of mkey / s with Rx480 4Gb, this must work better bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 72 -t 256 -p 1024 also watch your core-clock and memory-clock no need to overclock, you won't gain much. In fact you can lower core clock to 975MHz, you will still get around 100MKeys/s ...
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pikachunakapika
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February 22, 2019, 08:21:58 PM |
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What memory size are your rx480?
4GB I downloaded the latest version of bitcrack! Is compiling .... I think it was the old version that was giving me half of mkey / s with Rx480 4Gb, this must work better bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 72 -t 256 -p 1024 also watch your core-clock and memory-clock no need to overclock, you won't gain much. In fact you can lower core clock to 975MHz, you will still get around 100MKeys/s ... Can you please check your performance with -u -c again please. I noticed you got 80Mkeys/s with compressed only. [2019-02-22.19:47:44] [Info] Compression: compressed
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racminer
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February 22, 2019, 08:28:27 PM |
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What memory size are your rx480?
4GB I downloaded the latest version of bitcrack! Is compiling .... I think it was the old version that was giving me half of mkey / s with Rx480 4Gb, this must work better bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 72 -t 256 -p 1024 also watch your core-clock and memory-clock no need to overclock, you won't gain much. In fact you can lower core clock to 975MHz, you will still get around 100MKeys/s ... Can you please check your performance with -u -c again please. I noticed you got 80Mkeys/s with compressed only. [2019-02-22.19:47:44] [Info] Compression: compressed True with -c -u you get half the speed ! Never tried it, because most of non empty BTC addresses are compressed
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brainless
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February 22, 2019, 08:31:12 PM |
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@zielar: it is possible, I used the baby step giant step algorithm to retrieve the key #60 in about 80 seconds. And I have 32 GB ram. space search for each key of the puzzle transaction: key #1 : from 1 to 1 (2^0 -> 2^1 - 1) key #2 : from 2 to 3 (2^1 -> 2^2 - 1) key #3 : from 4 to 7 (2^2 -> 2^3 - 1) key #4 : from 8 to 15 (2^3 -> 2^4 - 1) .... key #60: from 2^59 to 2^60 - 1 Let's say for semplicity that our space search in this case is 2^60 (actually is only half, 2^59). P is the public key, we want to find the private key k. If G is the generator of the curve, the private key k is the number : k*G = P baby-step-giant-step (--> http://andrea.corbellini.name/2015/06/08/elliptic-curve-cryptography-breaking-security-and-a-comparison-with-rsa/): you create two lists, the first one (the baby steps list) in a hash table stored in the Ram and the second one (the giant steps list) dynamic: a) ( baby steps list): each baby step is equal to 1 (the distance between 2 consecutive elements is 1*G) and we store all these public keys: (0G), 1*G, 2*G, 3*G, 4*G, 5*G, ..., 2^30*G (because sqrt(2^60) = 2^30) in a hash table b) ( giant steps list): each giant step is equal to the sqrt(space size), in our case sqrt(2^60) = 2^30, namely the distance between 2 elements is 2^30*G . We generate on fly this list: P, P - 2^30*G, P - 2*2^30*G, P - 3*2^30*G, P - 4*2^30*G, P - 5*2^30*G, ....., P - (2^30 - 1)*2^30*G and we check if there is a element in the giant-steps list equal to an element in the baby-steps list. If for example P - 5*2^30*G = 1000*G, then P = 5*2^30*G + 1000*G --> P = (5*2^30 + 1000) * G --> private key k = (5*2^30 + 1000)2 lists, 2^30 elements * 2^30 elements = 2^60 comparisons without doing 2^60 operations, this is the trick. Hash table: 2^30 entries, each entry has the coordinate x of the public key (256 bit) + the number of the private key (max 32 bit). I'm using only the first 32 bits of the x instead of 256 bits (there are only few false collisions looking at the first 32 bits and I check these collisions), then I need to store (32 + 32) * 2^30 bit, 2^36 bit, 8 GByte. The hash table actually has to have the double of the number of the keys in the baby steps list (to avoid collisions between two different "x" that share the same 32 bits), so I need at least 16 GByte. With some other optimizations (the search space is actually 2^59 and not 2^60 + other properties of the secp256k1 curve), I can run the program. When the search space is greater than 60 bit, let's say 62 bit, I can't store all the 2^31 public keys of the baby steps list at once in the Ram, then I split 2^31 in 2 lists of 2^30 elements, A e B, then first I check the entire giant steps list against the list A, and if there is no match, I generate the list B and I generate again the giant steps list. in this script, pubkeys, where from you get pubkeys ?
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13sXkWqtivcMtNGQpskD78iqsgVy9hcHLF
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netlakes
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February 22, 2019, 08:40:22 PM |
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What memory size are your rx480?
4GB I downloaded the latest version of bitcrack! Is compiling .... I think it was the old version that was giving me half of mkey / s with Rx480 4Gb, this must work better bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 72 -t 256 -p 1024 also watch your core-clock and memory-clock no need to overclock, you won't gain much. In fact you can lower core clock to 975MHz, you will still get around 100MKeys/s ... Can you please check your performance with -u -c again please. I noticed you got 80Mkeys/s with compressed only. [2019-02-22.19:47:44] [Info] Compression: compressed True with -c -u you get half the speed ! Never tried it, because most of non empty BTC addresses are compressed 83Mkey/s now!!! :-D
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racminer
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February 22, 2019, 08:48:14 PM |
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What memory size are your rx480?
4GB I downloaded the latest version of bitcrack! Is compiling .... I think it was the old version that was giving me half of mkey / s with Rx480 4Gb, this must work better bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 72 -t 256 -p 1024 also watch your core-clock and memory-clock no need to overclock, you won't gain much. In fact you can lower core clock to 975MHz, you will still get around 100MKeys/s ... Can you please check your performance with -u -c again please. I noticed you got 80Mkeys/s with compressed only. [2019-02-22.19:47:44] [Info] Compression: compressed True with -c -u you get half the speed ! Never tried it, because most of non empty BTC addresses are compressed 83Mkey/s now!!! :-D try with one target bc.exe -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -o ohmygodimrich.txt -b 72 -t 256 -p 1024 1AVJKwzs9AskraJLGHAZPiaZcrpDr1U6AB
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netlakes
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February 22, 2019, 09:00:08 PM Last edit: February 22, 2019, 09:17:39 PM by netlakes |
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What memory size are your rx480?
4GB I downloaded the latest version of bitcrack! Is compiling .... I think it was the old version that was giving me half of mkey / s with Rx480 4Gb, this must work better bc.exe -c -u -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -i addrdata.txt -o ohmygodimrich.txt -b 72 -t 256 -p 1024 also watch your core-clock and memory-clock no need to overclock, you won't gain much. In fact you can lower core clock to 975MHz, you will still get around 100MKeys/s ... Can you please check your performance with -u -c again please. I noticed you got 80Mkeys/s with compressed only. [2019-02-22.19:47:44] [Info] Compression: compressed True with -c -u you get half the speed ! Never tried it, because most of non empty BTC addresses are compressed 83Mkey/s now!!! :-D try with one target bc.exe -d 1 --keyspace 1000000000000000:1FFFFFFFFFFFFFFF -o ohmygodimrich.txt -b 72 -t 256 -p 1024 1AVJKwzs9AskraJLGHAZPiaZcrpDr1U6AB https://imgur.com/9V8vq4O1 target = 86 Mkey/s -b 108 -t 256 -p 1024 45000 targets = 90 Mkeys/s -b 72 -t 256 -p 1024 I already started my project. bc.exe -d 1 --keyspace 000000000000000 -o ohmygodimrich.txt -b 72 -t 256 -p 1024 1FeexV6bAHb8ybZjqQMjJrcCrHGW9sb6uF LOL you are awesome! thank you so much guys!!!
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pikachunakapika
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February 22, 2019, 09:17:38 PM Last edit: February 22, 2019, 10:47:42 PM by pikachunakapika |
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in this script, pubkeys, where from you get pubkeys ?
In general you get the pubkeys from a transaction that has been sent from the target address (spent). For puzzle key #60: https://www.blockchain.com/btc/tx/6c08747ecd15904128c3f15f3bf47f6f365405da2661f17eb5119008807cee3eScriptSig: PUSHDATA(72)[3045022100b0d935af1a8b20186c2cd3e43dddb391d85acbfab890f025e683bc0da2534de702200b7816d64a59579da5328fbfd7ddd34b19ad864915fe2474338e53d04131257f01] PUSHDATA(33) 0348e843dc5b1bd246e6309b4924b81543d02b16c8083df973a89ce2c7eb89a10dCompressed public key in red: 0348e843dc5b1bd246e6309b4924b81543d02b16c8083df973a89ce2c7eb89a10d You can convert between compressed and uncompressed public key here: https://iancoleman.io/bitcoin-key-compression/But better use python and use bitcoin library. E.g.: import bitcoin as b pubkey = b.decode_pubkey("0348e843dc5b1bd246e6309b4924b81543d02b16c8083df973a89ce2c7eb89a10d") print("X:", hex(pubkey[0]), "Y:", hex(pubkey[1]))
Just research little on your own from here.
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pikachunakapika
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February 22, 2019, 09:23:45 PM |
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1 target = 86 Mkey/s -b 108 -t 256 -p 1024 45000 targets = 90 Mkeys/s -b 72 -t 256 -p 1024 I already started my project. bc.exe -d 1 --keyspace 000000000000000 -o ohmygodimrich.txt -b 72 -t 256 -p 1024 1FeexV6bAHb8ybZjqQMjJrcCrHGW9sb6uF LOL you are awesome! thank you so much guys!!! Very good! Good luck! You have to be lucky 256 to hit an address in 256 bit range.
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netlakes
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February 22, 2019, 09:25:41 PM |
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https://imgur.com/9V8vq4O1 target = 86 Mkey/s -b 108 -t 256 -p 1024 45000 targets = 90 Mkeys/s -b 72 -t 256 -p 1024 I already started my project. bc.exe -d 1 --keyspace 000000000000000 -o ohmygodimrich.txt -b 72 -t 256 -p 1024 1FeexV6bAHb8ybZjqQMjJrcCrHGW9sb6uF LOL you are awesome! thank you so much guys!!! Very good! Good luck! You have to be lucky 256 to hit an address in 256 bit range. I know!! was trying to pass some optimism on to the hunters: D I'm scanning address 61;)
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Bajula
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February 22, 2019, 10:13:54 PM |
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1 target = 86 Mkey/s -b 108 -t 256 -p 1024 45000 targets = 90 Mkeys/s -b 72 -t 256 -p 1024 I already started my project. bc.exe -d 1 --keyspace 000000000000000 -o ohmygodimrich.txt -b 72 -t 256 -p 1024 1FeexV6bAHb8ybZjqQMjJrcCrHGW9sb6uF LOL you are awesome! thank you so much guys!!! Very good! Good luck! You have to be lucky 256 to hit an address in 256 bit range. If you don't mind, I'm going to totally steal that and use it in conversation - lucky 256I'm still snickering over that.
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racminer
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February 22, 2019, 10:48:37 PM |
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1 target = 86 Mkey/s -b 108 -t 256 -p 1024 45000 targets = 90 Mkeys/s -b 72 -t 256 -p 1024 I already started my project. bc.exe -d 1 --keyspace 000000000000000 -o ohmygodimrich.txt -b 72 -t 256 -p 1024 1FeexV6bAHb8ybZjqQMjJrcCrHGW9sb6uF LOL you are awesome! thank you so much guys!!! Very good! Good luck! You have to be lucky 256 to hit an address in 256 bit range. I know!! was trying to pass some optimism on to the hunters: D I'm scanning address 61;) Good luck So, speaking of case 61: In my case, what I do is mix randomness with full range scan. I keep the range small enough to get reasonable waiting time (say 10 min) . This is an example: 1) generate all possibles 5 bits number: 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 2) pick a random 5 hex digit number (20bit) : for instance CADE9 we have now 16 possibles header for our key 10CADE9 11CADE9 12CADE9 13CADE9 14CADE9 15CADE9 16CADE9 17CADE9 18CADE9 19CADE9 1ACADE9 1BCADE9 1CCADE9 1DCADE9 1ECADE9 1FCADE9 3) call 16 instances of Bitcrack fully scanning following 16 ranges 10CADE9000000000:10CADE9FFFFFFFFF 11CADE9000000000:11CADE9FFFFFFFFF 12CADE9000000000:12CADE9FFFFFFFFF 13CADE9000000000:13CADE9FFFFFFFFF 14CADE9000000000:14CADE9FFFFFFFFF 15CADE9000000000:15CADE9FFFFFFFFF 16CADE9000000000:16CADE9FFFFFFFFF 17CADE9000000000:17CADE9FFFFFFFFF 18CADE9000000000:18CADE9FFFFFFFFF 19CADE9000000000:19CADE9FFFFFFFFF 1ACADE9000000000:1ACADE9FFFFFFFFF 1BCADE9000000000:1BCADE9FFFFFFFFF 1CCADE9000000000:1CCADE9FFFFFFFFF 1DCADE9000000000:1DCADE9FFFFFFFFF 1ECADE9000000000:1ECADE9FFFFFFFFF 1FCADE9000000000:1FCADE9FFFFFFFFF goto step 2 and repeat. each cycle will take 16*10min = 160 min if you have one GPU. This trick will increase your likelihood in finding the key as times increases and not wait 180 years (1GPU) or 5 years (36GPUs). LOL a random 5 hex digit is one of 1,048,575 if you get it right, you have the key in 160 min with only one GPU
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pikachunakapika
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February 22, 2019, 10:53:52 PM |
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I know!! was trying to pass some optimism on to the hunters: D
I'm scanning address 61;)
That is a good idea. Feel free to post your keyspaces for us to check. @Bajula, sure .
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netlakes
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February 22, 2019, 10:58:55 PM |
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https://imgur.com/9V8vq4O1 target = 86 Mkey/s -b 108 -t 256 -p 1024 45000 targets = 90 Mkeys/s -b 72 -t 256 -p 1024 I already started my project. bc.exe -d 1 --keyspace 000000000000000 -o ohmygodimrich.txt -b 72 -t 256 -p 1024 1FeexV6bAHb8ybZjqQMjJrcCrHGW9sb6uF LOL you are awesome! thank you so much guys!!! Very good! Good luck! You have to be lucky 256 to hit an address in 256 bit range. I know!! was trying to pass some optimism on to the hunters: D I'm scanning address 61;) Good luck So, speaking of case 61: In my case, what I do is mix randomness with full range scan. I keep the range small enough to get reasonable waiting time (say 10 min) . This is an example: 1) generate all possibles 5 bits number: 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 2) pick a random 5 hex digit number (20bit) : for instance CADE9 we have now 16 possibles header for our key 10CADE9 11CADE9 12CADE9 13CADE9 14CADE9 15CADE9 16CADE9 17CADE9 18CADE9 19CADE9 1ACADE9 1BCADE9 1CCADE9 1DCADE9 1ECADE9 1FCADE9 3) call 16 instances of Bitcrack fully scanning following 16 ranges 10CADE9000000000:10CADE9FFFFFFFFF 11CADE9000000000:11CADE9FFFFFFFFF 12CADE9000000000:12CADE9FFFFFFFFF 13CADE9000000000:13CADE9FFFFFFFFF 14CADE9000000000:14CADE9FFFFFFFFF 15CADE9000000000:15CADE9FFFFFFFFF 16CADE9000000000:16CADE9FFFFFFFFF 17CADE9000000000:17CADE9FFFFFFFFF 18CADE9000000000:18CADE9FFFFFFFFF 19CADE9000000000:19CADE9FFFFFFFFF 1ACADE9000000000:1ACADE9FFFFFFFFF 1BCADE9000000000:1BCADE9FFFFFFFFF 1CCADE9000000000:1CCADE9FFFFFFFFF 1DCADE9000000000:1DCADE9FFFFFFFFF 1ECADE9000000000:1ECADE9FFFFFFFFF 1FCADE9000000000:1FCADE9FFFFFFFFF goto step 2 and repeat. each cycle will take 16*10min = 160 min if you have one GPU. This trick will increase your likelihood in finding the key as times increases and not wait 180 years (1GPU) or 5 years (36GPUs). LOL Cool!! nice tip!!! I'll try
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pikachunakapika
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February 22, 2019, 11:02:14 PM |
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...snip...
goto step 2 and repeat.
each cycle will take 16*10min = 160 min if you have one GPU.
This trick will increase your likelihood in finding the key as times increases and not wait 180 years (1GPU) or 5 years (36GPUs). LOL
I like the idea of including randomness in the process. Because in the end you don't have to search any repeating patterns if consequently followed (0101, 1f1f). It is possible in theory these patterns appear but very unlikely in practice. I thought about ignoring ranges completely and just generate random starting offsets for each GPU working point. This would raise the factor of luck by a magnitude but make inclusion of deterministic methods harder.
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