How Quanta works

Picture a friend who collects cards and has never opened a trading app asking what Quanta is. You can explain it with five things they already know: a card, a sale, a number, a market, a position. Nothing along the way is hidden, and most of it you can check for yourself.

The card

A graded card, a PSA 10 or a BGS 9.5 for example, is sent to a professional vault. At intake the vault verifies it and mints a token for it on a public blockchain (Polygon today). The token holds what a collector reads off the slab's label: grader, grade, set and card number. It is tied to the physical item by a fingerprint that never changes, so the token always refers to the same card. From then on the card stays in the vault and the token is what trades. A sale changes the owner, not the card's location.

Quanta does not run a vault or mint tokens for cards. Vaults let collectors trade slabs without shipping them, and along the way they created a sales record anyone can read.

The sale

When a vaulted card sells, the sale settles on-chain in USDC. The record holds the price, the time, the seller, the buyer and the token that identifies that exact card at that exact grade. It cannot be edited afterwards, and reading it needs no permission: a public block explorer is enough. Compared with everything the hobby used to price itself, an asking price on a listing, an auction result in a PDF, a price guide's estimate, it is a different kind of thing: a settled fact rather than an opinion.

And there is plenty of it. One vaulting venue processed more than 50,000 on-chain trades on many days in 2026 (Privy, Aug 2026). Alongside it, Card Ladder tracks graded card sales across the major marketplaces and auction houses, and that data powers the levels and full history on the Quanta board. Together they are the raw material for everything below; The data source covers what each record contains.

The index

The Quanta index engine reads those sales. An indexer follows every trade, maps each token to its card at its grade once, and then freezes that dictionary so the mapping cannot shift. Next the engine picks constituents. A card qualifies by trading often enough, between enough different buyers and sellers, above a minimum value. Fame does not count. A trophy card that sells twice a year has no price to offer.

Then the engine cleans its input. It uses medians instead of averages, so one odd sale cannot move the level. It throws out trades that look like manipulation: the same two wallets passing a card back and forth, a card resold moments after it was bought. A market rests on this number, so the engine is built to shut out anyone trying to paint the tape.

Each constituent is scaled so that no single card dominates; a category index is not a stand-in for its priciest card. Composition is reviewed on a fixed schedule with continuity, so the level does not jump on review day. Light smoothing removes step changes while keeping real moves visible. The result is one level for the whole category, PKMN for graded Pokémon first, published continuously with a public archive and periodic commitments (Merkle roots) that let anyone recompute it from public data.

Each index has its own specification with its exact formula, thresholds and parameters. The reasoning behind every rule is on Methodology principles; exactly what a level and a constituent are is on What is a Quanta index.

The level leaves the engine through three doors. The Quanta site shows it on the index board: 44 collectible indexes, refreshed daily, each in dollars and rebased to $1.00 in May 2004. A public feed lets anyone pull the board snapshot and every index's full history (Data and API). And the Quanta oracle delivers the level to the market at least once per second from redundant publishers. The oracle flags a stale feed instead of repeating an old number, and the market then takes on no new risk until fresh data arrives.

The market

Part of the board is tradable. Each tradable index has one perpetual market on the Quanta DEX, running on Solana with USDC, a dollar stablecoin, as collateral. Orders meet on a central-limit orderbook that other trading front ends can list as well.

A trader's first question is whether the market really tracks the index or drifts to a price of its own. It tracks the index, by design. Positions are valued and liquidated against a mark price, and the matching engine builds that mark price from the index and the orderbook and holds it inside a narrow band around the index, a few percent at most, with the exact factor set in the market parameters. Funding does the rest: regular payments between longs and shorts, sized by the gap between the market and the index, pull the market back to the level whenever it strays. Index price, mark price, last price and Funding break these down.

Every market is also protected by health checks. A new market starts with limit orders only until liquidity is continuous on both sides. Three conditions are monitored around the clock: the price feed is fresh, funding is within bounds, and the market's insurance fund, funded by Quanta, is above its requirement. If any one of them slips, the market switches to reduce-only, so every position can always close and no new risk comes in. More on Market safeguards.

You

You open a Solana wallet, hold USDC plus a little SOL for network fees, deposit from that wallet, choose a market and pick a direction. Long if you expect the category to rise, short if you expect it to fall. Margin is isolated: every position has its own margin, an event on one position never reaches the rest of your funds, and your loss is capped at the margin you assigned. Leverage goes up to 20x (Margin, leverage and liquidation). The contract never expires, so you can hold it for as long as you keep margin on it, and there are no market hours. Your funds settle on-chain and stay under your control the whole time. The first market is at /trade/PKMN.

What you never get is a card, and what you never need is storage, shipping, a grading queue or a buyer. Perpetuals, explained for collectors explains positions and margin in plain words; Getting started walks through the steps.

What Quanta never does

Quanta never holds, sells, ships, grades or custodies a card. There is no inventory anywhere in the system: the vaults belong to their operators, the cards to their owners, and the index is a number computed from what those owners did. Quanta never makes up a price. Every level traces back to real sales you can look up, and every index rests on enough of them to price its category with confidence.

The next section takes the parts one by one, starting with the object itself: What is a Quanta index.

Sources for this page are listed in Sources.