Here is sp-mod #4 in vankraken mode: 7 seconds to solve puzzle 39. Note that the speed is only 278Mkeys/s because I only set up 100 starting points. (2 seconds)
cubitcrack --keyspace 4B00000000:4C00000000 122AJhKLEfkFBaGAd84pLp1kfE7xK3GdT8 -p 100
Bitcrack sp-mod #4 (
https://github.com/sp-hash)
[2021-03-26.08:49:07] [Info] Compression: compressed
[2021-03-26.08:49:07] [Info] Starting at: 0000000000000000000000000000000000000000000000000000004B00000000
[2021-03-26.08:49:07] [Info] Ending at: 0000000000000000000000000000000000000000000000000000004C00000000
[2021-03-26.08:49:07] [Info] Counting by: 0000000000000000000000000000000000000000000000000000000000000001
[2021-03-26.08:49:07] [Info] Initializing GeForce GTX 1070 Ti
[2021-03-26.08:49:07] [Info] Generating 1,945,600 starting points (74.2MB)
[2021-03-26.08:49:08] [Info] 10.0%
[2021-03-26.08:49:08] [Info] 20.0%
[2021-03-26.08:49:08] [Info] 30.0%
[2021-03-26.08:49:08] [Info] 40.0%
[2021-03-26.08:49:08] [Info] 50.0%
[2021-03-26.08:49:08] [Info] 60.0%
[2021-03-26.08:49:08] [Info] 70.0%
[2021-03-26.08:49:08] [Info] 80.0%
[2021-03-26.08:49:08] [Info] 90.0%
[2021-03-26.08:49:09] [Info] 100.0%
[2021-03-26.08:49:09] [Info] Done
GeForce GTX 1070 416 / 8192MB | 1 target 282.24 MKey/s (1,533,132,800 total) [00:00:03][2021-03-26.08:49:14] [Info] Address: 122AJh
LEfkFBaGAd84pLp1kfE7xK3GdT8
Private key: 0000000000000000000000000000000000000000000000000000004B5F8303E9
Compressed: yes
Public key:
022D77CD1467019A6BF28F7375D0949CE30E6B5815C2758B98A74C2700BC006543
[2021-03-26.08:49:14] [Info] No targets remaining
Execution time = 7 seconds