How to define "Validator" in the CoinEx Chain?

Validator is the essential part within CoinEx Token’s ecosystem, participating in block mining, packaging, broadcasting and etc, and obtain voting power in the process. Voting power concludes amount staked by validator and users, and sorted by the proportion voting power, the top 42 will become active validators, the latter ones will be optional. Alternatively, validators are also required to maintain network, govern community and etc.