The IOV Name Service is implementing the Cosmos SDK staking module.
For the detailed description, you may read the full documentation on Cosmos SDK about staking and minting.
Staking the IOV Token
Staking the IOV Token means delegating your IOV Token to a Validator for a minimum bonding period. The bonding period starts when you give the command to unbond your tokens. To stake your IOV Tokens, you first need to pick a Validator to delegate to. You can see the list of Validators on our block explorer https://big-dipper.iov-mainnet-2.iov.one/validators
List of IOV Name Service active Validators at launch
You can click on a Validator to find its operator address, it starts with starvaloper1....
Then to delegate 1000 IOV Tokens from your address you use the delegate command: