How to check if I am on good chain?
Is using 3.0.1 sufficient or I have to do something more?
I assume you're solo mining. Easiest and simplest way is to compare your balance using block explorer.
Here the link...
http://www.fuzzbawls.pw/explore/HOdlcoin/index.phpEnter your wallet address on the search box and compare the balance shown on the block explorer with those in your wallet.
If they are the same then you're on the right chain.
you can also go to the debug window in your wallet, console tab and type
getblockhash 268733
it should show:
000000777edbdae1eff3cad5b2917dbe883267a17ea1b190f21f565ef368b3bd
It does show that string.
What does it mean?
Where do I find my wallet address to put into the block explorer?
If I am on the wrong chain, what do I do to get on the right one?
You're on the correct chain.
In your wallet -- click file tab then choose receiving address from drop down menu.
Do nothing... you're on the correct chain.