Propel Integrates Chainlink VRF to Help Power Provably Random Lucky Draw Contracts
We’re excited to announce that Propel — an unparalleled blockchain infrastructure provider specializing in DeFi, metaverse, and staking — has integrated Chainlink Verifiable Random Function (VRF) on Ethereum, Polygon, and BSC mainnets. By integrating the industry-leading decentralized oracle network, we now have access to a tamper-proof and auditable source of randomness needed to select the winner from the raffle battle and lucky draw smart contracts. Ultimately this creates a more exciting, transparent, and fraud-proof user experience, as secure randomness enables a fair and decentralized selection of winners.
It’s no secret that blockchain technology is being used in video games, marking a paradigm shift to games with unprecedented transparency and autonomy. Some of the gaming industry’s advancements are also found in DeFi apps. Examples are lucky draw smart contracts and decentralized random number generators among others, which Propel DeFi has as an infrastructure offering (using Chainlink VRF). These modules are used to develop “No-Loss Lucky Draw services’’ for players.
In order to be fairly select winners for this service, 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 Propel smart contract will only accept the random number input if it has 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 Propel is provably fair and was not tampered with by the oracle, outside entities, or the Propel team.
“We chose Chainlink VRF as our fair and tamper-proof RNG for the lucky draw modules under DaaS — a significant value-add for Propel. Users will be able to verify the winner selection process as a result of this integration. The integration process itself was very fast and smooth, allowing our developers to focus on core mechanics and offerings for the Propel platform.” — Shivam Chopra, Founder & Co-Lead.
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 Propel
Propel is a global blockchain infrastructure solution platform that offers end-to-end, plug-and-play infrastructure solutions to DeFi, NFT, and Metaverse projects. Propel’s solutions are available for multiple blockchain ecosystems and include multi chain capabilities. Propel holds the distinction of being the only provider offering DaaS, MaaS, and Staking solutions under a single umbrella.
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