00:35:04 <vtnerd> i_a luigi1111 :  I'm not entirely sure from your pastebin, but you need to do an "unpack" after the hash, not a "pack" or "compress". you shouldn't be touching the y-coord at all like that
00:36:36 <vtnerd> https://github.com/monero-project/monero/blob/master/src/crypto/crypto.cpp#L481 `hash_to_ec` does a `...frombytes..` call found here -> https://github.com/monero-project/monero/blob/master/src/crypto/crypto-ops.c#L1284
00:37:13 <vtnerd> that last bit is not part of the y-coord, and is used to determine the x-coord sign