Run public raffles that anyone can audit. SHA-256 hash makes cheating impossible.
⭐ 4.9/5 from 1,247+ reviews · 🌍 Used in 60+ countries
When viewers can mathematically verify your raffle was fair, engagement and trust skyrocket. We've seen brands grow 3-5x faster after switching to SorteiGram.
PDF certificate includes timestamp, participant count, seed, hash. Use as proof for SECAP (Brazil), FTC (US), or local raffle authorities.
Set up tiered prizes: 1 grand winner + 10 runner-ups + 50 consolation prizes. All picked in single cryptographic draw.
Allow 1 entry per user, multiple entries (each comment counts), or require specific actions (tag friends, share). Fully configurable.
Title, prize, number of winners, entry rules. Optional: blacklist (employees, family).
Use our template generator for compliant post copy. Post on your account.
Let it run for hours, days, weeks. SorteiGram doesn't care — pull when you're ready.
Click pick. SHA-256 hash published. Winners revealed. PDF certificate downloadable. Share verify link.
Traditional raffles require trusted notaries or third parties to vouch for fairness. SorteiGram replaces that with math: publish the SHA-256 hash BEFORE the draw, and anyone in the future can verify the result. It's the same model used by online casinos with provably-fair gaming — but for Instagram raffles.
Legally, raffles often require entry fees and are regulated. Giveaways are free entry. SorteiGram supports both modes — we provide the cryptographic random selection layer either way. Consult your local laws for entry fee rules.
SorteiGram is the random selection tool. Collecting raffle fees from participants is on you (and may require legal authorization in your country). We provide the audit trail proof you'll need.
Download the PDF certificate after the draw. It contains: participant list, SHA-256 hash, draw timestamp, cryptographic seed, winner list. Print and include in your raffle filing.
Used by raffle organizers in Brazil (SECAP filing), US, EU, India, Indonesia, and 50+ other countries. PDF certificate is universally accepted as audit proof.
Run public raffles that anyone can audit. SHA-256 hash makes cheating impossible.
Start a Raffle →