hello there
i have my own bitcoin address and public key and a WIF recognized as invalid
this txt file was old and recovered from my old HDD
i assume that the wif has more than 19 missing characters at known positions
is there is any chances that i can recover it ??
any guiding help will be appreciated

The Missing Characters ( Replaced By * ) Are as Follows :
5HpHagT65TZzG1P*********************EB3kEsreAnchuDf
Assuming you manage to tweak Pollard Kangaroo (don't know if it's possible, looks kinda tricky), here are the expected run times and cost (on-demand, spot instance could be 1/3rd of the price) when using AWS GPU instance p3.8xlarge (4x V100):
MC - missing characters, bits - equivalent missing bits
| | MC | | | bits | | | ETA | | | $ | | |
| | 14 | | | 82 | | | 00:11:17 | | | 2 | | |
| | 15 | | | 88 | | | 01:25:53 | | | 18 | | |
| | 16 | | | 94 | | | 10:54:07 | | | 133 | | |
| | 17 | | | 100 | | | 3d 11:01:37 | | | 1,016 | | |
| | 18 | | | 105 | | | 26d 08:18:52 | | | 7,740 | | |
| | 19 | | | 111 | | | 200 days | | | 58,942 | | |
| | 20 | | | 117 | | | 4 years 68 days | | | 448,893 | | |
| | 21 | | | 123 | | | 32 years | | | 3,418,664 | | |
| | 22 | | | 129 | | | 242 years | | | 26,035,770 | | |
| | 23 | | | 135 | | | 1849 years | | | 198,282,544 | | |
| | 24 | | | 141 | | | 14083 years | | | 1,510,074,752 | | |