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Native VRF (Built-in Randomness) Tutorials

Flow is a blockchain with built-in randomness, powered by its native VRF (Verifiable Random Function) capabilities. Unlike other blockchains that require external oracles, Flow’s Random Beacon provides cryptographically secure randomness at the protocol level. Eliminating extra costs, reducing latency, and improving reliability for decentralized applications.

These tutorials cover how to implement secure randomness directly in both Cadence and Solidity smart contracts on Flow. Whether you’re building on Flow’s native environment or Flow EVM, you can generate unbiased, verifiable random values without third-party dependencies.

Tutorials​

Secure Randomness with Commit-Reveal in Cadence​

Learn how to implement secure randomness in Cadence using Flow’s commit-reveal scheme, ensuring fairness and resistance to manipulation.

VRF (Randomness) in Solidity​

Learn how to use Flow’s native verifiable randomness in Solidity smart contracts on Flow EVM, including best practices, security considerations, and complete code examples.

Deploy a Solidity Contract Using Cadence​

Discover how to deploy and interact with Solidity contracts on Flow EVM using Cadence, enabling cross-environment randomness integrations.

Why Flow for Randomness?​

  • Protocol-level randomness: No need for external oracles or APIs.

  • Lower costs: Built-in randomness means no extra transaction fees.

  • Enhanced security: Cryptographically secure and verifiable on-chain.

  • Cross-language support: Works seamlessly in both Cadence and Solidity.

  • Speed: Flow is a fast blockchain with the design goal of 1,000,000 transactions per second.

More Coming Soon​

Stay tuned, more advanced tutorials on the Flow native VRF and built-in blockchain randomness are on the way, including gaming, NFT minting, and lottery contract examples.

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