Gamifying Yield Farming Strategy on Cronos: Real-Life Use Cases of Band VRF

TL;DR

• Cronos has integrated Band VRF into its Layer 1 Cronos EVM network.
• Band VRF, developed by Band Protocol, offers verifiable and reliable random number generation, making it particularly valuable for GameFi applications.
• BandChain seamlessly interacts with Cronos EVM, ensuring that dApps on the platform have reliable access to Band VRF for secure and validated random number generation.
• Projects like Kaching and Wingalaxy serve as successful examples of Band VRF implementation on Cronos EVM.

Introduction

Following the successful integration of Band Price Feed on Cronos zkEVM, a layer 2 solution, we are delighted to share another milestone with Cronos, the integration of Band VRF (Verifiable Random Function) with Cronos EVM (Layer 1). This VRF implementation marks a significant advancement in enhancing the capabilities of blockchain applications, introducing new mechanics for staking and gaming, and unleashing new potentials on Cronos.

This article will delve into Band VRF integration with Cronos, exploring how it operates and plays a crucial role in the blockchain ecosystem. Band VRF provides a secure and verifiable source of randomness, essential for various applications, from gaming to decentralized finance (DeFi). By integrating Band VRF, Cronos Chain offers developers and projects enhanced fairness and transparency, paving the way for innovative and robust solutions.

What is Band VRF?

A Verifiable Random Function (VRF) is a cryptographic primitive that produces a random output and proves that the output is generated correctly. This proof allows anyone to verify the authenticity and correctness of the random output without needing to trust the source. Randomness plays a crucial role in various blockchain applications, ensuring unpredictability, unbiasedness, verifiability, and tamper-proof aspects of those apps. Key areas where randomness is essential include:

• Gaming: Ensures fair outcomes and prevents manipulation.
• Lottery and Raffles: Guarantees equal chances for all participants.
• DeFi: Facilitates random rewards and enhances dynamic mechanisms with secure randomness.

*If you want to learn more about Band VRF, please visit this Band VRF site.

Band VRF’s Integration with Cronos Ecosystem

Band VRF integrates with Cronos EVM by deploying the necessary contracts on the EVM layer. This allows dApps on Cronos zkEVM to leverage Band VRF for their randomness needs, ensuring fair and secure random outcomes. Moreover, the integration provides technical benefits such as reduced latency and improved throughput for randomness requests, making it an ideal solution for high-performance applications. The figure below demonstrates the high-level overview of how Band VRF works on Cronos EVM in 12 steps.

1.) Request Random Data: The process begins on Cronos EVM where a dApp submits a request for random data to the VRF Provider Contract.

2.) Pick-Up Request: The Off-chain Resolver Bot picks up the randomness request from the VRF Provider Contract.

3.) Request Data on BandChain: The Off-chain Resolver Bot then submits this request to the VRF Oracle Script on the BandChain.

4.) Choose a Data Source Randomly: The VRF Oracle Script randomly selects one of the available VRF data sources to handle the request.

5.) Call External API: The selected VRF Data Source calls an external API to generate the random number.

6.) Generate VRF Result and Proof: The VRF Data Source generates a random number and cryptographic proof and sends it back to the VRF Oracle Script.

7.) Verified VRF Result: The VRF Oracle Script verifies the result using the proof provided by the VRF Data Source.

8.) Pick-Up Merkle Proof: The verified VRF result is included in the BandChain state, and the Off-chain Resolver Bot picks up the Merkle Proof of this inclusion.

9.) Relay Merkle Proof: The Off-chain Resolver Bot relays the Merkle Proof to the VRF Provider Contract on the Cronos EVM.

10.) Submit Merkle Proof: The VRF Provider Contract submits the Merkle Proof to the Bridge Contract for validation.

11.) Validation: The Bridge Contract validates the Merkle Proof, ensuring that the VRF result was correctly generated and recorded on the BandChain.

12.) Return VRF Result: Finally, the validated VRF result is sent back from the Bridge Contract to the original dApp through the VRF Provider Contract, completing the process.

Projects Utilizing Band VRF on Cronos EVM

Currently, several notable projects, including Kaching and Wingalaxy, are utilizing Band VRF on Cronos EVM. Let’s take a closer look at how these projects are leveraging our VRF!

Kaching

Kaching is an innovative decentralized finance (DeFi) project on Cronos EVM that gamifies the $CRO staking experience, ensuring fairness and transparency for all users. By yield farming, staking, and lottery systems, Kaching leverages Band VRF to ensure fairness and transparency in its operations. By integrating Band VRF, Kaching provides verifiable random outcomes for lottery draws, ensuring every participant has an equal chance of winning. This integration also facilitates the selection of random winners for reward distributions and other gamified elements, enhancing the overall user experience with secure and unbiased randomness.

Kaching's Key Benefits of this VRF Integration:

• Fair & Transparent Draws: Band VRF ensures all lottery draws and random selections are conducted fairly and transparently, fostering user trust.
• Rock-Solid Security: The cryptographic proof provided by Band VRF ensures that the randomness is tamper-proof, preventing manipulation.
• Boosted User Participation: The fairness and transparency provided by Band VRF enhance user engagement and participation in Kaching’s various activities.

Wingalaxy

Wingalaxy is a decentralized gaming platform on Cronos EVM that offers various blockchain-based games and interactive experiences. It aims to provide a secure, fair, and immersive gaming environment for its users.

Application of Band VRF in Wingalaxy:

Wingalaxy integrates Band VRF to by using Band VRF, Wingalaxy ensures that the random elements in their games are fair and verifiable, enhancing the overall gaming experience.

Impact of Band VRF on Wingalaxy's Functionality:

• Enhanced Fairness: Band VRF ensures that all random events in Wingalaxy games are fair and unbiased, providing a level playing field for all players.
• Building Trust: The verifiable randomness provided by Band VRF builds trust among players, knowing that game outcomes are not manipulated.
• Enhancing Player Experience: The assurance of fairness and transparency improves the overall player experience, encouraging more players to engage with the platform.

Let’s Build with Band!

We invite developers and projects to learn more about Band Protocol and Band VRF! Explore our resources, documentation, and community channels to discover how Band VRF can elevate your blockchain applications.

Band Protocol’s Developer Resources

• BandChain Documentation
• Band Verifiable Random Function (VRF)

Connect With the Band Core Contribution Team

• Discord: Band Protocol Discord
• Email:
  • dev@bandprotocol.com
  • bd@bandprotocol.com

Making Your Dream GameFi on Cronos

Interested in building games? Cronos is well known for its GameFi platform, Cronos Play, which offers tools and SDKs ready to help you create impactful games in the GameFi space. Check out these resources and start building!

Cronos’s Developer Resources

• Cronos EVM Documentation
• Cronos Play Documentation

Connect With Cronos Team

• Email Developer Relations: Contact Form
• Email: contact@cronoslabs.org
• Discord: Cronos Discord

Future Prospects and Conclusion

In this article, we have highlighted the significance of Band VRF and its integration with Cronos EVM. The integration enhances the reliability and fairness of blockchain applications, by providing a secure and verifiable source of randomness. We encourage developers and projects on Cronos to consider leveraging Band VRF to create innovative and trustworthy solutions.

Band VRF is continuously evolving to meet the needs of the blockchain ecosystem. The Band Protocol team is committed to further innovating with Band VRF to provide even more robust and scalable solutions for developers, exploring potential new integrations and projects that can benefit from secure and verifiable randomness. Stay tuned for more exciting VRF integrations to come!

About Cronos

Cronos (cronos.org) is a leading blockchain ecosystem, partnered with Crypto.com and over 500 application developers and contributors, serving an addressable user base of over a hundred million people worldwide. Cronos' mission is to facilitate easy and safe adoption of self-custody in Web3 for the next billion crypto users, with a strong focus on Decentralized Finance (DeFi) and Gaming.

More about Cronos: Discord, Twitter, Telegram, and Website

About Kaching

Kaching is an innovative on-chain protocol on Cronos EVM that allows users to earn rewards on their CRO holdings with the chance to win big. Users can stake CRO in turbo accounts to contribute to a crypto pool, which generates rewards through a smart yield strategy. These rewards are distributed via regular draws, made fair and transparent through Band VRF. Kaching also offers flexibility with various withdrawal options, providing both earnings and excitement. Join Kaching, stake your CRO, and enjoy the thrill of potentially hitting the jackpot.

More about Kaching: Website, X, Discord, and Telegram

About Band Protocol

Band Protocol is a cross-chain data oracle platform with the aspiration to build high-quality suites of web3 development products. The flagship Oracle solution aggregates and connects real-world data and APIs to smart contracts, enabling smart contract applications such as DeFi, prediction markets, and games to be built on-chain without relying on the single point of failure of a centralized oracle.

More about Band Protocol: https://linktr.ee/bandprotocol