参照 Create a Private Chain教程，启动程序出错，怎么解决？
Please delete the old DB:
rm -rf ChainDB
And retry:
./nknd -c
非常感谢。删除，重启之后，出现如下错误：
怎么设置GenesisBlockProposer？
另外，能否留个联系方式，及时请教？
You may use this command to show your wallet information:
$ ./nknc wallet -l account
It will show your wallet address and public key
copy your wallet public key, then edit config.json:
$ vi config.json
set GenesisBlockProposer: your wallet publick key
Our team are working in this forum and discord. You can reach us both forum and discord.
Thanks.
NKN Discord server
thanks. if we want to build a private chain within a private local network, instead of a local PC, how to do it?
You can do as same as local PC, but set the seeds to your local network nodes’ IP.