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Web3

Provably Fair Raffle

Run giveaways with verifiable randomness.

Intermediate12h1–2 people17/20 fit
TL;DR

Build Provably Fair Raffle for event organisers and communities in ~12h with 1–2 people. Stack: Solidity + VRF + Wagmi.

Why it wins: Live audience demo.

Build flow

01 · Problem
Raffle winners are disputed as rigged.
02 · Solution
Entrants register, a contract requests verifiable randomness and anyone can verify the draw.
03 · Build
  1. 1Write raffle contract
  2. 2Request randomness
  3. 3Pick winners
  4. 4Show proof
04 · Demo
Run the raffle with the audience.

MVP checklist

  • Entry list
  • Verifiable draw
  • Proof page
  • Multiple prizes

Tech stack

TechRole
SoliditySmart contracts
VRFVerifiable randomness
WagmiReact wallet hooks

Reference repos

Open-source projects you can build on. Links checked 2026-10-31.

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