https://prohashing.com/explorer/Genstake/ is semi-functional and up to date.  I am connected to their wallet node and the block height is correct, although they are running an older version of the wallet.  The search transaction box works.  Search for transaction you have mined or minted and it works.  The address box doesn't always work.  Even if you click on your address in a block that you have found, the address page could show no transactions for a year.  Some addresses don't seem to have this problem.  I tried my yobit address and it didn't have any transactions for a year either, even though I have had transactions verified in the past week.

The PoW coins mined shown are the same high difficulty that I see with getmininginfo where there is 600+MH/s on netmhashps, so I am pretty confident that this is the correct chain.  You can connect to this node(and mine) by editing your genstake.conf file and adding the lines:

connect=coins.prohashing.com:6267
connect=157.161.128.53
connect=24.128.132.71

If your wallet has existing connections you can see those with the getpeerinfo command and add those as well.  I think that if you have connect= set in the .conf file it won't try to connect elsewhere, so add those to the file before you stop and start your wallet again.  My windows wallet shows the peer [2001:4060:4419:1::53]:9341 but I can't figure out how to connect to this using connect=.  It would be nice if the wallet had the addnode command.