there is an example of the generation of the first period winning number:
the first period drawing block is 1843554.
1.get the random_seed of block 1843554,
in console input "blockchain_get_block 1843554",
each character of random_seed is a hexadecimal number ,0-15 were expressed with 0123456789abcdef,so a=10,b=11,c=12,d=13,e=14,f=15
take the 1st character of random_seed, it is c,=12(decimal).
take the 2nd character of random_seed, it is 5,=5.
take the 3rd character of random_seed, it is 6,=6.
take the 4th character of random_seed, it is 2,=2.
take the 5th character of random_seed, it is e,=14.
Power number = <4th>*16+<5th> , is 2*16+14=46.
2.so winning numbers of the first period is "12 5 6 -46" .