Ogami Conquest Integrates Chainlink VRF to Help Power Ogami Mage NFT Minting
We’re excited to announce that Ogami Conquest—a play-and-earn MOBA (multiplayer online battle arena) game—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 assign NFT IDs with a randomly generated offset when Ogami Mage NFTs are revealed. Ultimately this creates a more exciting and transparent user experience, as users now have high assurances that the distribution of rare Ogami Mages is provably random and fair.
Ogami Conquest is a play-and-earn MOBA that utilizes unique breeding and recycling mechanics. Players can breed their own heroes with millions of possible combinations and recycle them in return for tokens. An Ogami Mage NFT is a VIP ticket into the Ogami ecosystem.
In order to make the mint of our Ogami Mages unpredictable and fair, we needed 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 Ogami Mage 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 rare NFTs are distributed and revealed in a provably fair manner and the process was not tampered with by the oracle, outside entities, or the Ogami Conquest team.
“We want to ensure that our Ogami Mage NFTs are minted in a fair and unpredictable manner. Chainlink VRF gives us this assurance by using a cryptographic proof to that can be verified by a contract, meaning it’s provably on-chain the random number generator has not been tampered with. That’s why we chose Chainlink VRF as our go-to source of randomness”
– Yunus Emre Ünal, CEO
About Chainlink
Chainlink is the industry standard for building, accessing, and selling oracle services needed to power hybrid smart contracts on any blockchain. Chainlink oracle networks provide smart contracts with a way to reliably connect to any external API and leverage secure off-chain computations for enabling feature-rich applications. Chainlink currently secures tens of billions of dollars across DeFi, insurance, gaming, and other major industries, and offers global enterprises and leading data providers 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 Ogami Conquest
Ogami Conquest is the one of the first MOBA games with sandbox elements that utilizes NFTs as playable and breedable characters backed by the OGM token, giving players true ownership of their NFTs and a new governance model that bridges the gap between players and developers.
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