VRANDVerifiable randomness, one line away.

Request a random number that arrives with a proof your own code checks — on the web or inside a Solana program.

Locally verified, by default

The SDK re-verifies every VRF proof against your own request before returning a value. A number from VRAND is checked math, not a server's claim.

One signature funds a session key — then game loops, tournaments and batches run with ZERO wallet prompts, every outcome still proven and verified.

Provers post SOL bonds. Declare an at-risk amount and a silent prover pays you exactly that, via a permissionless slash. No committee, no appeal.

`await vrand.random()` on the web; one attribute + one call in an Anchor program; a zero-dependency interface crate for everything else.

Dice, shuffles, weighted picks and floats via rejection sampling — byte-identical Rust and TypeScript implementations pinned by golden tests.

VRAND is live on Solana mainnet — request a number in the app. Devnet remains available for free experimentation (the app has a network switch).

Surface	Install	One line
Web / TypeScript	`npm i @vrand.io/web`	`const r = await vrand.random()`
Anchor program	`vrand-anchor` + `vrand-cpi` crates	`ctx.accounts.request_vrand(seed, at_risk, seeds)?`
Any framework	`vrand-interface` (zero dependencies)	build the instruction from constants

Program ID (mainnet + devnet): 4HeYPD3be4YVGGGShLgrHwFS2aakss7gMD6tWcjXA4nx