BTC Address(c): 1ECDLP8osCZHBB1LH5PVAUfFegeMgFb52q
minKey = 0x659756abf6c17ca70e0000000000000000000140be6ddd93e441f8d4b4a85653b20b4cdcc5c748207a0daa16191d07a425d8080c276f9412472e0429e61bc355
maxKey = 0x659756abf6c17ca70fffffffffffffffffffff40be6ddd93e441f8d4b4a85653b20b4cdcc5c748207a0daa16191d07a425d8080c276f9412472e0429e61bc355
The problem I see with those keys is that, when you mod them to fit the curve, they are far than 80 bits apart. Just saying.
Good luck to everybody with the challenge.
I guess you just have to subtract from the target: 0x659756abf6c17ca70e0000000000000000000000140be6ddd93e441f8d4b4a85653b20b4cdcc5
c748207a0daa16191d07a425d8080c276f9412472e0429e61bc355
You look for the pk in bit 80
Then you add to the obtained key
0x659756abf6c17ca70e0000000000000000000000140be6ddd93e441f8d4b4a85653b20b4cdcc5
c748207a0daa16191d07a425d8080c276f9412472e0429e61bc355