Introduction

raffl is a permissionless on-chain raffle platform on Solana. Anyone creates a raffle, deposits a prize, sets a ticket price. Buyers enter, a verifiable random function picks the winner. No operator picks the winner, no one can override a settled raffle, and the protocol takes a single fixed fee on settlement.

What is raffl

Three things, glued together: a Solana program written in Anchor that owns all state and money, a Switchboard On-Demand integration that supplies verifiable randomness, and a Next.js web app where most users click buttons rather than write code.

Once a raffle is created, every state transition happens on-chain. Funds sit in program-derived vaults that only the program can sign for. There is no backend service in the loop.

Who it's for

Creators who want to give something away (an NFT, an amount of SOL, a community item) and let the chain pick fairly. They deposit the prize at create time and reclaim it if the raffle never sells out.

Buyers who want a verifiable shot at a prize. They pay ticket price into the vault, get a Ticket account back, and can prove on-chain that the draw was honest.

Builders who want to read the IDL, fork the program, or call it from their own Anchor program through CPI. The program is open source on GitHub.

What makes it different

• Verifiable fairness. Random source is Switchboard On-Demand. The winner is derived on-chain from oracle entropy, not chosen by a server.
• No operator custody. The vault is a PDA. Even the protocol authority cannot drain it.
• Permissionless. Anyone can create a raffle, anyone can buy a ticket, and once a raffle is sold out anyone can settle it.
• Recoverable. Under-subscribed raffles cancel cleanly and refund every buyer.

The honest cuts

Read Getting started to run your first raffle on devnet, or Core concepts if you want the model first.