# 4.5. Validator Quorum

In the genesis stage, a few trusted nodes will run as the initial Validator Set. After the blocking starts, anyone can compete to join as candidates to elect as a validator.

STARS is the token used to stake for Stargram Chain.

In order to remain as compatible as Ethereum and upgradeable to future consensus protocols to be developed, Stargram Chain chooses to rely on the staking management (Please refer to the below “Staking and Governance” section). There is a dedicated staking module for Stargram Chain. It will accept staking from STARS coin holders. Upon every UTC midnight, Stargram Chain will issue a verifiable ValidatorSetUpdate message to update its validator set.

While producing further blocks, the existing Stargram validators check whether there is a ValidatorSetUpdate message relayed onto Stargram periodically. If there is, they will update the validator set after an epoch period, i.e. a predefined number of blocking time.

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