Must maintain a balance of at least 42 ZEN in a 'stake' transparent address
Must maintain a minimum balance of .001 ZEN in a private address on the node for challenges
Must be available with minimal exception time for at least 92% of an earning period (appox. 1 day)
Must perform a challenge in under 300 seconds
Allow 8 or more peers by allowing public connections on the configured zen port (default 9033)
Must maintain a valid public SSL cert properly configured for zen
Must not fall behind the current block height by more than 4 blocks
Must update to current versions of the zen and/or tracker software within the posted time frame
Note: only one public Ip address is allowed per node (IPv4 or IPv6).
Nodes who meat all criteria will be algible for payments
Do you have to keep the same IP for all the 24 hours or so of the earning period? If yes, do you ALWAYS have to have the same IP? I guess not.