Before patch:
```
$ ./make_chainparams.py
0000000000000000030e63e8b8a3e08e25244daf633203c416c91f5b03968641
000000000000000000000000000000000000000000ff5be32693c1c823f2aac5
```
After patch:
```
$ ./make_chainparams.py
0000000000000000030e63e8b8a3e08e25244daf633203c416c91f5b03968641
000000000000000000000000000000000000000000ff5be32693c1c823f2aac5
```