How Cratos used Chainlink Keepers to automate the token vesting process

What is Cratos?

Cratos is a V2E(Vote to Earn) cryptocurrency that can be used and earned on the Cratos app, a real-time voting app with 600K downloads and 300K registered users.

How Cratos uses Chainlink Keepers

We integrated Chainlink Keepers to help securely and cost-efficiently automate the token vesting process.

What is the Cratos token vesting process?

The token vesting process occurs every month, whereby a certain amount of tokens are unlocked from locked wallets. Chainlink Keepers help execute the function by unlocking the tokens every 30 days. Chainlink Keepers help ensure that token vesting is executed on time in a trust-minimized manner, giving users stronger guarantees that it will function exactly as intended.

How Cratos integrated Chainlink Keepers

Based on the Keepers documentation, we created and deployed a Keepers-compatible contract on Then, we registered the contract on the Chainlink Keeper Network to perform the Upkeep.

Token vesting contract for CRTS

Creating our Keepers-compatible contract

checkUpkeep Function: Runs off-chain every block to determine if the performUpkeep function should be called on-chain.

checkUpkeep function for Chainlink Integration with CRTS
performUpkeep function for Chainlink Integration with CRTS

Advice for developers integrating Keepers

A proper gas limit with some margin is recommended. If the gas exceeds this limit, the function will not execute on-chain. See best practices for setting gas limits here.


By integrating Chainlink Keepers, we have saved 100+ hours of DevOps time and are able to remove centralized scripts.

Why Cratos chose Chainlink Keepers

Cratos team chose Chainlink Keepers considering its ease of implementation and strong security guarantees. We are very happy to announce that the token vesting process is now fully automated and decentralized without the efficiency bottlenecks caused by having to execute it manually.

About Cratos

Cratos is a leading V2E (Vote To Earn) cryptocurrency designed to facilitate citizen participation in the Cratos app, a real-time live vote platform where anyone can generate a vote and users can participate in the vote immediately, and the statistics of the results by gender and age are displayed to users to enhance the transparency of public opinion. Users can earn CRTS tokens by registration, creating a vote, leaving a comment, and participating in a vote.

Related links:

Cratos Global



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CRATOS is an ERC-20 utility token designed to facilitate citizen participation in the CRATOS app, a real-time live vote platform.