What Backs Your Token

We just watched the Market Maker take the other side of Maya's trade and hedge it on an outside venue. But that's the dealer's problem, not Maya's. Maya has a different question: she's now holding eTSLA in her wallet - what makes it real? What stops it from being a number on a screen with nothing behind it?

The answer lives in the collateral vault.

The pool behind the token

When Maya minted eTSLA, the protocol created brand-new tokens out of thin air - that's what minting is. On its own, that should make you nervous. A token conjured from nothing is worth nothing.

What gives it value is a pool of real money sitting behind it. That pool is the collateral vault: a shared reserve of genuine onchain assets - USDC, wstETH (staked-ETH), cbBTC (tokenized Bitcoin) - deposited by people who want to earn yield. We call those people Liquidity Providers, or LPs.

Think of it like a bank's reserve, except you can see it. Every eToken in circulation has collateral standing behind it, and that collateral is locked in the vault for anyone to inspect on the chain.

How LPs fund the vault

An LP's role is simple: deposit collateral, and earn a return for letting the protocol use it as backing.

When an LP puts money into the vault, they don't get an IOU on a slip of paper - they get vault shares. A share is just a claim on a slice of the pool. If you own 1% of the shares, you own 1% of everything in the vault. (This is a standard onchain pattern - a "tokenized vault," sometimes labeled ERC-4626 - but you don't need the jargon. Deposit money, get shares, the shares represent your slice.)

Here's the nice part: as the vault earns fees over time, those earnings flow back into the pool. The number of shares doesn't change - but each share is now a claim on more collateral. So an LP's stake quietly grows. That's the yield. (Exactly where that yield comes from, and how much, is the whole of Part 3 - for now, just know LPs earn for providing the backing.)

   LPs                         The Collateral Vault
 (USDC,  ─── deposit ───▶   ┌──────────────────────────┐
 wstETH,                    │  pooled collateral        │
 cbBTC)  ◀── get shares ──  │  (real onchain assets)    │
                            │                           │
                            │  backs ALL eTokens        │
                            └────────────┬─────────────┘
                                         │ stands behind
                                         ▼
                              eTSLA, eGOLD, eNVDA …
                               (held by traders)

One more thing worth knowing: LPs can't yank their money out on a whim. Withdrawals go through a request-and-wait queue rather than an instant cash-out. That sounds restrictive, but it's a feature - it stops a panic from draining the reserve out from under the tokens it's meant to back. We'll see the safety logic of that in Part 4.

More tokens than one vault - one pool of risk

You might expect each asset to have its own little vault: a Tesla vault, a gold vault, a Bitcoin vault. Own doesn't work that way. There are separate vaults per type of collateral (a USDC vault, a wstETH vault, and so on), but the risk is pooled globally. All the collateral across all the vaults backs all the eTokens together.

The piece that keeps the books straight across that whole pool is the Vault Manager - the operator we met back in Part 1, who also runs the dealer desk. It keeps a running tally of two numbers:

• Total exposure - the dollar value of every eToken in circulation (how much the protocol owes, in effect).
• Total collateral - the dollar value of everything sitting in the vaults.

As long as the second number comfortably exceeds the first, the system is solvent: there's more money behind the tokens than the tokens are worth.

The collateral ratio: over-backed on purpose

"Comfortably exceeds" is the key phrase. Own doesn't aim for collateral to just match the tokens - it keeps a deliberate cushion. That cushion is the collateral ratio: how much backing sits behind each token. The protocol watches the flip side of the same coin, utilization - how much of the available collateral is currently being used to back exposure - and holds it under a ceiling.

The protocol caps utilization at 80%. In plain terms: the eTokens in circulation are never allowed to be worth more than 80% of the collateral behind them. There's always at least a 20% buffer of extra backing.

Why the cushion? Because the price of Tesla moves. If Maya's eTSLA jumps in value, the protocol's obligation grows - and the buffer absorbs that swing without the vault ever falling short. When a new mint would push utilization past the cap, the protocol simply refuses it. The backing stays ahead of the tokens, always.

There are also per-asset caps: no single asset (say, eTSLA) is allowed to soak up more than a set slice of the pool. That way one wild stock can't put everyone's collateral at risk. (More on these dials in Part 3 and Part 4.)

So, what backs Maya's eTSLA?

A pooled reserve of real onchain assets - USDC, wstETH, cbBTC - put up by LPs who earn yield for providing it, held in vaults, and kept deliberately larger than the total value of every eToken in circulation. Maya's token isn't a promise floating free. It's a claim on a visible, over-funded pool, with a 20% cushion and a hard rule that the backing can never slip behind.

What just happened

• Maya's freshly minted eTSLA is backed by a collateral vault - a shared pool of real onchain assets (USDC, wstETH, cbBTC).
• Liquidity Providers (LPs) deposit that collateral and receive vault shares - a claim on their slice of the pool - and earn yield as the pool grows.
• Risk is pooled globally: all collateral across all vaults backs all eTokens together, with the Vault Manager keeping the running tally.
• The protocol stays solvent by keeping a collateral ratio cushion - utilization is capped at 80%, so backing always exceeds the tokens by at least 20%.
• A new mint that would breach that cap (or a single asset's cap) is simply refused - the backing can't fall behind.