VRF

Quick take - VRF (Verifiable random function)

• Provably fair > Probably fair
• Provides a transparent source of randomness to the blockchain space.

VRF is a highly secure and provably fair source of on-chain randomness for all kinds of blockchain-based applications, NFTs, and games.

Overview

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 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 helps provide users with automated and publicly verifiable proof directly on-chain that each application using Chainlink VRF for randomness is provably fair and cannot be tampered with or predicted by the oracle, outside entities, or development teams.

Release info

• VRF v2. Chainlink VRF v2 offers a new and improved version of the industry-standard on-chain RNG solution, making it easier to configure and scale randomness requests at a significantly reduced cost.

For v2 highlights check out the following blog. https://www.bnbchain.world/en/blog/chainlink-vrf-v2-is-live-on-bnbchain/

• VRF v1