The complete guide to running provably fair competitions in 2026

Trust is the single most important currency in the online competition industry. Customers who believe a draw is fair will enter more often, spend more per entry, and recommend your site to friends. Customers who doubt it will leave and never come back.

In 2026, "just trust us" is no longer good enough. The UK competition market has matured, customers are more savvy, and the operators who thrive will be the ones who can mathematically prove their draws are fair. This guide shows you how.

What is provable fairness?

Provable fairness is a cryptographic system that lets anyone independently verify that a competition's winning positions were determined before any tickets were sold — and weren't changed afterwards. It's the gold standard for online competitions, borrowed from the world of blockchain gaming and online gambling.

The concept is simple: before ticket sales open, the system generates winning positions and publishes a commitment hash — a cryptographic fingerprint of those positions. After the draw, the full details are revealed and anyone can recalculate the hash to verify nothing changed.

How it works: the three phases

A provably fair competition runs in three distinct phases. Understanding each is essential for communicating the system to your customers.

Phase 1: Commitment

Before any tickets go on sale, the system generates winning positions using a cryptographically secure random number generator. These positions are encrypted and a SHA-256 hash is computed from the positions, a random salt, and the raffle ID. This hash is published publicly and timestamped.

At this point, the winning positions exist but are hidden from everyone — including the operator. The published hash acts as a tamper-proof seal.

Phase 2: Ticket sales

Customers purchase tickets as normal. Each ticket is assigned a sequential number. If instant win prizes are configured, the system checks each purchase against pre-committed positions using an HMAC lookup — no decryption needed, so the main prize positions remain hidden.

Phase 3: Verification

After the draw, winning positions are decrypted and published alongside the original salt. Anyone can take the positions, salt, and raffle ID, compute the SHA-256 hash, and compare it against the commitment hash published before sales began. If they match, the draw is verified as fair.

Why it matters for your business

Beyond the ethical imperative, provable fairness delivers measurable business benefits. We've seen consistent patterns across Basecomp operators who enable the transparency system:

• Higher conversion rates — Customers who see the verification badge are 18% more likely to purchase tickets

• Increased average order value — Trust reduces purchase anxiety, leading to larger basket sizes

• Better retention — Verified fairness reduces refund requests and increases repeat purchases

• Competitive moat — Most competitors still rely on "trust us" approaches

"Since enabling provable fairness, our customer complaints about draw rigging dropped to zero. Not reduced — zero. The verification page gets more traffic than our FAQ."

James T. — Competition operator, 50,000+ tickets sold

Setting it up on Basecomp

If you're running on Basecomp, provable fairness is built in. Here's how to enable and configure it:

1. Navigate to Store Settings → Transparency in your dashboard

2. Toggle "Provably fair draws" to enabled

3. Choose whether to show the verification widget on your raffle pages (recommended)

4. Optionally configure the commitment publication timing — most operators publish 24 hours before sales open

That's it. Basecomp handles the cryptographic commitment, encryption, hash publication, and verification page automatically. Your customers see a verification badge on each raffle, and can click through to verify the draw independently.

Communicating fairness to customers

The technology is only half the equation. You also need to communicate it effectively. Most of your customers won't understand SHA-256 hashing — and they don't need to. Focus on three messages:

1. Winners are chosen before tickets go on sale. This is the most powerful message. It immediately addresses the number one concern: "Is the draw rigged?"

2. We publish proof before sales open. The timestamp adds credibility. Customers can see that the commitment existed before they bought their tickets.

3. Anyone can verify independently. You don't need to trust us — you can check the maths yourself, or ask a third party to do it.

Screenshot — verification badge on raffle page

Looking ahead: what's changing in 2026

The UK Gambling Commission has signalled increased scrutiny of prize competitions. While raffles aren't technically gambling (they're classified as prize competitions under the Gambling Act 2005), operators are expected to demonstrate fairness and transparency.

We expect to see industry self-regulation emerge this year, with responsible operators voluntarily adopting transparency standards. Operators who adopt provable fairness now will be well-positioned when these standards inevitably become the norm.

The bottom line

Provable fairness is no longer a nice-to-have — it's a competitive necessity. Customers are more informed than ever, and the operators who earn their trust will win their business. The good news? If you're on Basecomp, it's a toggle away.

Start with enabling the transparency system, add an explanation to your FAQ, and watch how your customers respond. The data speaks for itself.