A new wave of transparent, verifiable on-chain games is emerging on Solana — and one of them is turning the rug pull into a feature
The crypto gambling industry is projected to surpass $65 billion by 2026. Despite this explosive growth, the majority of platforms — including many that describe themselves as “decentralized” — still rely on server-side random number generators that players have no meaningful way to verify.
That gap between what platforms promise and what players can actually prove has created an opening for a new category of games built on verifiable on-chain randomness. On Solana, this movement is gaining momentum thanks to mature VRF (Verifiable Random Function) infrastructure, deterministic on-chain entropy sources, and sub-second transaction finality. And one project taking the concept to its most provocative conclusion is RugPot — a lottery that positions itself as the “anti- pump.fun” by making the rug pull itself the transparent game mechanic.
The Problem with Trust-Based Gambling
Traditional online casinos operate on a simple premise: players trust that the house isn’t cheating. The RNG runs on the operator’s servers. Odds are whatever the operator says they are. Winnings arrive when the operator decides to process them.
Crypto gambling was meant to solve this. In some ways it has — faster payouts, pseudonymous access, lower fees. But the fundamental randomness problem persists. Many crypto casinos still use server-generated seeds or semi-centralized oracle solutions. The phrase “provably fair” has been diluted into a marketing buzzword rather than a technical guarantee.
Meanwhile, the trust problem is compounding. A 2026 report from Solidus Labs found that approximately 98.7% of tokens launched on Pump.fun, Solana’s dominant token launchpad, exhibit characteristics of rug pulls or pump-and-dump schemes. Pump.fun has generated more than $935 million in revenue from this system — most of which represents losses for retail participants.
On-Chain Randomness: A Technical Alternative
Provably fair gaming on Solana relies on two different randomness mechanisms, each serving a different purpose:
Deterministic on-chain entropy is used for high-frequency checks where speed matters. This
combines sources like Solana’s sysvar, pre-committed server seeds, and incrementing
nonces. The randomness is fast and cheap to compute but still impossible to predict before the fact, because the slot_hash isn’t known until the block is produced.
Switchboard VRF (Verifiable Random Function) is used when cryptographic proof matters most — such as selecting a lottery winner. Switchboard’s oracle network generates a random value along with a mathematical proof that the output was correctly computed. The proof is submitted on-chain and can be independently verified by anyone.
Together, these primitives enable games where every outcome — from continuous trigger checks to final winner selection — is auditable by any user with access to a block explorer. Trust is removed from the equation and replaced with verification.
Case Study: RugPot and the Transparent Rug
RugPot takes this infrastructure and applies it to a deliberately provocative premise: if the majority of Solana token launches rug anyway, why not build a game where the rug pull is the actual mechanic — but make it provably fair?
The game operates in continuous rounds:
Players purchase shares on a linear bonding curve. Prices rise algorithmically as more shares are sold.
Every buy splits into 95% jackpot contribution, 2.5% holder reflections, 1.5% house fee, and 1% carry-over to the next round.
Every sell returns 87% to the seller, distributes 10% as reflections to remaining holders, and sends 3% into the pot.
Every 5 seconds, the Solana program computes a trigger check using deterministic on-chain entropy. If the check succeeds, the jackpot fires.
On trigger, a Switchboard On-Demand VRF request commits on-chain. The verified randomness is used to traverse an on-chain segment tree of weighted player positions and select a winner.
The entire pot transfers from the on-chain vault PDA to the winner’s wallet via cross-program invocation — all atomically in one transaction.
The round ends. Anyone can start a new one.
Everything happens on-chain. Draw parameters are fixed at round start and cannot be changed mid- round. The Solana program ID is public. Every transaction is a permanent blockchain record.
The Fairness Layer Beyond Randomness
One of RugPot’s more interesting design decisions is how it handles winner weighting. Rather than selecting winners in direct proportion to share count — which would give whales near-total dominance
— the protocol uses a concave weighting function.
Effective weight is calculated as . The sub-linear exponent creates a
meaningful fairness property: doubling your position doesn’t double your odds. Ten times the position increases win probability by approximately 7x, not 10x. One hundred times the position yields roughly 50x the probability, not 100x.
This makes small-holder participation meaningful while still rewarding larger commitments, a design trade-off that most traditional lotteries avoid entirely.
Anti-Manipulation Infrastructure
Several design choices reflect a focus on preventing specific attack vectors common in on-chain gambling:
Minimum hold time. Winners must have held shares for at least 10 Solana slots (approximately 4 seconds). If the selected winner bought too recently, the draw is voided and the round continues. This prevents same-block buy-and-trigger attacks where a bot could purchase shares at the exact moment of a draw.
ATH Floor protection. Each round tracks the pot’s all-time high. A floor of 8% of the ATH is enforced
— the pot cannot drop below this level from sell-side activity. This prevents coordinated dumps from draining the pot before a draw.
Sell-pressure multiplier. When selling dominates buying over a rolling 10-minute window, the trigger probability receives a dynamic boost up to 1.5x. This forces rounds to resolve faster under bearish conditions, preventing indefinite stagnation.
Atomic execution. The VRF request, winner selection, and payout all occur in the same on-chain transaction. There is no intermediate state where operators could cancel or modify outcomes.
Implications Beyond Lotteries
While RugPot is a specific application, the underlying infrastructure has broader implications for on- chain gaming:
NFT minting — Fair and verifiable trait assignment. VRF-based minting allows collectors to confirm that rare attributes were distributed randomly rather than allocated to insiders.
Loot and rewards — In-game item drops determined by verifiable randomness. Developers cannot secretly adjust drop rates for specific players.
Matchmaking — Random opponent selection in competitive games, auditable by all participants.
Raffles and giveaways — Any system requiring a winner to be selected from a pool benefits from cryptographic verification, particularly when financial value is involved.
Multilingual and Global Access
RugPot has launched with support for 14 languages, including English, Spanish, German, French, Russian, Chinese, Japanese, Korean, Portuguese, Hindi, Arabic, Vietnamese, Indonesian, and Filipino. The platform includes full right-to-left support for Arabic and pre-rendered translated content for all major search engines and social platforms.
The project also operates a permanent affiliate program at affiliate.rugpot.io, offering recurring commissions to referrers based on the activity of referred players — structured as an ongoing revenue share rather than a one-time bounty.
The Road Ahead
On-chain provably fair gaming is still an early category. Most existing projects are small, user education around VRF verification remains a challenge, and regulatory frameworks for crypto gambling continue to evolve across jurisdictions.
But the underlying infrastructure is now production-ready. Switchboard VRF operates at consumer- grade latency and cost. Solana’s throughput supports real-time gameplay. And as the visibility of pump.fun’s 98.7% rug rate continues to pressure the ecosystem, players have increasing reason to prefer platforms where fairness is a verifiable property rather than a marketing claim.
For projects willing to treat transparency as a core feature rather than an afterthought — and for players who want to verify rather than trust — the tooling has finally caught up.
Learn more about RugPot at rugpot.io or join the community on Telegram.
This article is for informational purposes only and does not constitute financial or investment advice. On-chain gaming involves financial risk. Players should only participate with funds they can afford to lose. Always comply with local regulations regarding online gambling.
