I would have to agree with Mopar. Single digit is good for a 16 spot raffle (0-9, a-f), but with 50 spots, you would have to take the last two digits and exclude any blocks where the last two are over 51.
Here are the blocks since the original selected block:
763,196 - 00000000000000000000758c9dc8a0e18c260d25b75ecc93035afaafa
6bfdbb
1 = 61
763,197 - 000000000000000000009bc854d34bff776dc53c0b587da5765ac49e6
9aab
4eb = 94
763,198 - 00000000000000000005207ce70062b25e4d654c22cf65a1b642dbc920e7a
7f
0 = 70
763,199 - 000000000000000000064ebfc84a95e3fe2446e7abf6112cae5cf8ca95f535
75 = 75
763,200 - 000000000000000000078efb893c59c5a381ce7bbf65c01bedc6f9524e518
55a = 55
763,201 - 000000000000000000048232fcca7d559a194431c8bd8e2e3d79b7
3dca
5dcdff = 35
Based on this 35 would be winner at block 763,201
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35. sunnybwoy
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Of course this is your raffle, so up to you mx12.levins.
Let us know what you decide and I will get shipping payment sent to you.
Geo