Stablecoins & the Crypto Monetary System
The mechanism is elegant. It runs on one company.
This is the model behind USDC and USDT, and the simplest one there is: for every token in circulation, real money is meant to be sitting behind it — cash and short-dated bonds. Minting and burning keep the two locked together. Everything else about this model depends on whoever is holding the reserve.
The problem
Mint it, then burn it. Then ask who is counting.
Three presses. The first two show you a mechanism that genuinely works — watch the two columns, they are never allowed to move apart. The third press asks a different question.
One issuer, one reserve, one supply
ILLUSTRATIVE MODELNothing issued yet. The reserve is empty and no tokens exist. Press Run the four stations.
Deposit → mint → redeem → burn. That loop is the whole coupling: circulating supply can only grow when money arrives, and it shrinks the moment money leaves. There can never be more tokens than was paid in. Minting is not printing — it issues a token against a deposit that already landed, and burning reverses it.
That is arbitrage, and it is the second half of the peg. Below the target, buying on the market and redeeming at the target is worth doing, so people do it — and every redemption burns supply and lifts the price back. Nobody had to be told to defend the peg. But read the condition carefully: it only works while holders have confidence in the reserves and in redemption.
Look at where those two columns came from. The right one is a public blockchain — anyone can count the tokens. The left one is a bank account and a bond portfolio that no blockchain can see. What a holder is able to verify is bounded by what the issuer chooses to disclose and by who it engaged to attest to that disclosure. A statement of 1:1 backing describes the design; it is not evidence that the reserve is there, that it is high quality, or that it stays available at speed when everyone asks at once. This model does not remove trust. It concentrates it in a single organisation — and that is the trade it makes in exchange for being this simple.
The definition
Three things the word “backed” is carrying.
Tap each card for what sits underneath it.
Hands on
Five properties. Strength, or weakness?
Pick each one and read the verdict. Two of them are why this design won; three of them are the price it pays for being that simple.
The strength is simplicity and acceptance. The weakness is dependence on trust in the issuer and the tight coupling to banks and regulation. Whatever else fiat-backed stablecoins are, fully independent of the traditional financial system is not one of them.
The bridge
Four stations, and the thing they all rest on.
The cycle in order, and then the sentence the cycle never says out loud.
Simple, widely accepted, and resting on one organisation. A completely different design does away with the central issuer altogether and puts the backing into smart contracts that anyone can inspect — with its own set of problems in place of this one. That is crypto-backed stablecoins, next.
Check yourself
Five questions.
Answers come straight from this lesson. Submitting completes it.