ZPL delivers cryptographically verifiable randomness for NFT drops, DAO voting, DeFi liquidations, and smart contracts. Any party — developer, user, or auditor — can verify the outcome is fair.
manipulation possible — ZPL result cannot be predicted or gamed
<50ms
per ZPL randomness call — no block wait time
Any
blockchain — Ethereum, Solana, Polygon, Cosmos and more
The Problem
Why On-Chain Randomness Fails
Blockchain transactions are deterministic and public. Any randomness derived from block data (timestamp, hash, gas price) can be predicted or manipulated by miners and validators.
Without ZPL
Miner manipulation — miners can reorder or withhold blocks to influence outcomes in their favor
Front-running attacks — MEV bots see pending transactions and exploit randomness before it settles
No audit trail — users must trust the developer's word that the drop was random
Centralized oracles — solutions like Chainlink VRF require trusting an external service that can fail or be compromised
With ZPL
Off-chain verifiable seed — ZPL generates a value from physical-layer computation, not blockchain state
Published before reveal — commit the ZPL hash on-chain before minting, reveal after. Manipulation impossible.
Full public auditability — anyone with the seed can reproduce every trait assignment, winner selection, or liquidation order
No oracle dependency — ZPL runs on your backend, no third-party service required for verification
Interactive Demo
NFT Trait Generator — Live Demo
Click "Mint NFT" to call the real ZPL API and generate a provably fair NFT. Every trait is derived deterministically from the ZPL value — no developer can change the result.
🎨 ZPL NFT Trait Generator
Uses /compute?N=16 — the resulting ZPL value seeds all trait assignments. The seed is your on-chain verifiable proof.
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ZPL Genesis #???
Verifiable Proof — ZPL Seed
—
Anyone can call POST /compute {"N":16} and verify that these traits follow deterministically from this seed. Developer cannot alter results after publishing this hash.
Applications
Where ZPL Applies in Blockchain
Any smart contract that involves selection, ordering, or allocation needs provably fair randomness. ZPL provides the off-chain seed with on-chain commit-reveal verification.
🖼️
NFT Drops
Publish a ZPL hash commit before the drop. Reveal after mint. Every rarity assignment, trait selection, and winner lottery is deterministic and independently verifiable by any holder.
POST /compute N=16
🗳️
DAO Voting
When votes are tied or a tiebreaker is needed, ZPL acts as a neutral on-chain arbitrator. The DAO simply commits to using the ZPL value published at vote-close time.
Neutral arbitration
💱
DeFi Fairness
Liquidation order, reward epoch boundaries, and protocol parameter updates all require fair ordering. ZPL prevents miners from choosing favorable transaction orderings.
MEV-resistant
🎮
Gaming NFTs
On-chain game items with ZPL-backed stats. Players can verify every sword's attack rating, every card's power level, or every land plot's resource yield was fair at mint time.
Verifiable stats
🎰
Lottery Contracts
Replace insecure block-hash lotteries with ZPL-seeded draws. Publish the ZPL seed commitment before ticket sales close. No party — including the operator — can influence the draw.
Commit-reveal proof
🌉
Cross-chain Bridges
Fair validator selection and dispute resolution across bridging protocols. ZPL provides a shared neutral seed that all chains can independently verify without trusting each other's validators.
Chain-agnostic
Integration
Integrate in 5 Minutes
Use ZPL as an off-chain oracle with on-chain commit-reveal verification. No Solidity changes required — the verification happens in your front-end or backend.
JavaScript — ZPL Smart Contract Fairness Pattern
// ─── 1. BEFORE YOUR DROP: commit the ZPL hash on-chain ──────────────────────const BACKEND = 'https://zpl-backend.onrender.com';
async functiongetVerifiableSeed(N = 16) {
const token = localStorage.getItem('zpl_token');
const r = await fetch(`${BACKEND}/compute`, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
...(token ? { 'Authorization': 'Bearer ' + token } : {})
},
body: JSON.stringify({ N, mode: 'analyze' })
});
const data = await r.json();
return data.result; // e.g. 0.4927183...
}
// ─── 2. DERIVE TRAITS deterministically from the seed ───────────────────────functionderiveTraits(seed) {
const s = seed * 1e9; // expand to integer spacereturn {
rarity: RARITIES[Math.floor(s % 1000 / 10)], // 0-99 = common, 95-99 = legendary
background: COLORS [Math.floor(s % 100)],
trait: TRAITS [Math.floor((s * 7) % TRAITS.length)],
edition: Math.floor((s * 1337) % 10000)
};
}
// ─── 3. PUBLISH commitment on-chain BEFORE the drop ─────────────────────────async functioncommitDrop() {
const seed = awaitgetVerifiableSeed(25); // higher N = more entropyconst commitment = ethers.utils.keccak256(
ethers.utils.toUtf8Bytes(seed.toString())
);
// Store commitment on-chain — BEFORE tickets go on saleawait dropContract.commitSeed(commitment);
console.log('Seed committed:', commitment);
// After drop: call revealSeed(seed) — contract verifies keccak256(seed) == commitmentreturn { seed, commitment };
}
// ─── 4. VERIFY (any party — no trust required) ──────────────────────────────functionverifyDrop(publishedSeed, onChainCommitment) {
const recomputed = ethers.utils.keccak256(
ethers.utils.toUtf8Bytes(publishedSeed.toString())
);
return recomputed === onChainCommitment; // true = provably fair
}
Simple, Transparent Pricing
Start free. Scale with your collection. No per-mint fees, no oracle subscriptions.