ChainGuardians Integrates Chainlink VRF to Customize the Appearance of New Chainlink Guardian NFTs

26 April 2021
by chainguardians

ChainGuardians are excited to announce our mainnet integration of Chainlink's Verifiable Randomness Function (VRF) — a decentralized oracle service from Chainlink that provides smart contracts with a verifiable source of on-chain randomness. By integrating Chainlink VRF, we ensure that all players have a provably fair and unbiased chance at generating any one of the 16 predefined unique color aesthetics possible within our newly released Chainlink Guardian NFTs. The use of Chainlink's VRF means the generation of each Chainlink Guardian NFT is provably fair.

There is a dedicated web-page for the new Chainlink Guardian which will be shared nearer the time. Please note that the minting functionality will not be available until 04/28/2021.

Introducing Zorare: The Guardian of Chainlink


"Known as the great speaker of the Cryptoverse; Zorare is an articulate thought leader and intellectual. His skills are so refined in combat that some believe he has the ability to foretell the future; whilst others claim that he does not defeat his enemies, rather he allows them to defeat themselves."


How Chainlink Guardian NFTs will Utilize VRF

While NFT-backed items offer many benefits, such as provable ownership and ease of exchange for real-world value, we wanted to bring about a more dynamic user experience by allowing players the opportunity to individualize their Chainlink Guardian NFTs. With Chainlink's VRF, this can be done in numerous ways:

  • - Chainlink Guardian Purchase: Since Chainlink's VRF is integrated directly into ChainGuardians' website and code, there is nothing the user needs to do - they can purchase Chainlink Guardian NFTs on the front end with the exact same experience they are used to when purchasing NFTs.
  • - 16 Unique Colors: Players will be able to purchase a Chainlink Guardian NFT that features 1 of 16 unique colors assigned by Chainlink VRF. This will change the appearance of the Guardian whilst preserving their predetermined attributes, ultimately leading to an individualized experience that doesn’t interfere with gameplay
  • - Dedicated Webpage: There is a dedicated webpage on our blockchain-based gaming platform where users can securely purchase Zorare, the Chainlink Guardian. This webpage also provides a breakdown of the color rarities and the percentage chance of minting as per Chainlink's VRF.

Because this customization feature centers around creating a meaningful player experience, we wanted to make sure that players had a way to prove that the randomness driving their color assignments was auditable. Chainlink’s VRF makes for the ideal technology to enable this feature. 

Chainlink's VRF works by combining block data that is still unknown when the request is made with the oracle node's pre-committed private key to generate both a random number and a cryptographic proof. A valid cryptographic proof cannot be generated unless the process remains tamper-proof, and ChainGuardians will not accept the random number supplied by Chainlink VRF without a valid cryptographic proof. As such, players get strong and verifiable assurances that the randomness was fairly generated without interference from any third party—including the oracles and us, the developers. 

We’re thrilled to be able to deploy this transparent, tamper-proof source of entropy to further augment the user experience within ChainGuardians. We look forward to exploring more ways to integrate Chainlink VRF in the future, such as to generate verifiably random Guardian statistics. For more details on the integration and why we chose Chainlink VRF, view our previous announcement: 

We are always looking for ways to make our gameplay more meaningful and unique for users. Integration with Chainlink VRF delivers a provably fair and tamper-proof source of randomness, enabling a more dynamic user experience within ChainGuardians while retaining the transparency benefits of blockchain technology. This is the first step in embedding VRF deeper into the ChainGuardians ecosystem.

  • - Robbie Cochrane, ChainGuardians Co-Founder


About Chainlink

Chainlink is the most widely used and secure way to power universally connected smart contracts. With Chainlink, developers can connect any blockchain with high-quality data sources from other blockchains as well as real-world data. Managed by a global, decentralized community of hundreds of thousands of people, Chainlink is introducing a fairer model for contracts. Its network currently secures billions of dollars in value for smart contracts across the decentralized finance (DeFi), insurance and gaming ecosystems, among others.

Chainlink is trusted by hundreds of organizations to deliver definitive truth via secure, reliable data feeds. To learn more, visit, subscribe to the Chainlink newsletter, and follow @chainlink on Twitter.

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About ChainGuardians 

ChainGuardians is a blockchain meets superheroes gaming ecosystem which combines traditional gaming concepts with blockchain technologies. As well as boasting the world’s first NFT Mining Platform and interoperable RPG, ChainGuardians also merges awe-inspiring artwork with imaginative storytelling. ChainGuardians amalgamates the juxtaposing concepts of play-to-earn and free-to-play through a balanced in game ecosystem; enabling users the opportunity to make key decisions through governance.

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