OnePlanet Integrated Chainlink VRF To Help Power Derby Stars’ Randombox NFT Reveals

OnePlanet
4 min readJan 4, 2023

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We’re excited to announce that NFT launchpad and marketplace OnePlanet, in collaboration with horse-themed NFT project Derby Stars, has integrated Chainlink Verifiable Random Function (VRF) on Polygon mainnet. By integrating the industry-leading decentralized oracle network, we now have access to a tamper-proof and auditable source of randomness needed to help power Derby Stars’ Randombox NFT reveals, which are accessible on OnePlanet’s marketplace. Ultimately, this creates a more exciting and transparent user experience, as users can verify that they have an equal chance of minting the rarest NFTs.

OnePlanet is an emerging NFT launchpad and marketplace on Polygon, designed to foster the development of next-gen NFT collections. It offers comprehensive support, including bespoke launchpad services, add-on utilities, and technical assistance, to help accelerate the growth and adoption of NFT collections on its platform.

With support from OnePlanet, Derby Stars launched its 1,000 Randombox NFTs, which featured the following prizes:

  • 1 unique horse NFT
  • 199 rare/common horse NFTs
  • 800 starter pack NFTs

In order to help enable the Randombox reveal mechanism to allocate Derby Stars NFTs in a fair manner, we need access to a secure random number generator (RNG) that any user could independently audit. However, RNG solutions for smart contracts require several security considerations to prevent manipulation and ensure system integrity. For instance, RNG solutions derived from blockchain data like block hashes can be exploited by miners/validators, while off-chain RNG solutions derived from off-chain APIs are opaque and don’t provide users with definitive proof about the integrity of the process.

After reviewing various solutions, we selected Chainlink VRF because it’s based on cutting-edge academic research, supported by a time-tested oracle network, and secured through the generation and on-chain verification of cryptographic proofs that prove the integrity of each random number supplied to smart contracts.

Chainlink 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. The OnePlanet x Derby Stars smart contract will only accept the random number input if it has a valid cryptographic proof, and the cryptographic proof can only be generated if the VRF process is tamper-proof. This provides our users with automated and verifiable assurances directly on-chain that the Randombox NFT reveal process is provably fair and was not tampered with by the oracle, outside entities, the OnePlanet team, or the Derby Stars team.

“As an NFT launchpad and marketplace, we’re excited to be using Chainlink VRF. Users are increasingly demanding proof of randomness and Chainlink VRF is the most reliable, secure, and transparent RNG solution in the industry.” — Pryce Cho, CEO of OnePlanet.

“It’s easy to see why Chainlink VRF is the industry-standard RNG. With proofs published on-chain, it helps users verify that our Randombox NFT reveal mechanism is underpinned by verifiable randomness.” — Sean
Hahm, Founder/CEO of Derby Stars

About Chainlink
Chainlink is the industry-standard Web3 services platform that has enabled trillions of dollars in transaction volume across DeFi, insurance, gaming, NFTs, and other major industries. As the leading decentralized oracle network, Chainlink enables developers to build feature-rich Web3 applications with seamless access to real-world data and off-chain computation across any blockchain and provides global enterprises with a universal gateway to all blockchains.

Learn more about Chainlink by visiting chain.link or reading the developer documentation at docs.chain.link. To discuss an integration, reach out to an expert.

About OnePlanet
OnePlanet is a leading Polygon NFT marketplace, where holders can define and expand the utility of their NFTs. Starting as a marketplace to trade NFTs, OnePlanet also provides social features to enable meaningful communication between holders and technical infrastructure to accelerate a project’s development.

About Derby Stars
Derby Stars is a horse racing metaverse game where players can breed, grow, build, and trade. Built by a team of game veterans, Derby Stars aims to provide a high-quality player experience never seen before in an NFT game.

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