Stablecoins, and how safe they actually are
A dollar that lives on a blockchain — until the day it does not.
What is a stablecoin?
A stablecoin is a crypto token designed to hold a constant value, almost always one US dollar. Fiat-backed stablecoins hold reserves of cash and short-term government debt. Crypto-backed ones are over-collateralised with other tokens. Their stability depends entirely on those reserves and on redemption working.
The three designs, and how each can fail
Fiat-backed coins depend on the issuer genuinely holding the reserves and honouring redemptions. Crypto-backed coins depend on collateral value holding up during a crash, which is exactly when it does not. Algorithmic designs depend on confidence, which is the least reliable collateral there is.
What a depeg actually means for you
A stablecoin trading at $0.98 is not a rounding error. If you hold $10,000, you are down $200 — and if you need to exit or repay a loan during the deviation, that loss becomes permanent rather than temporary.
During the USDC depeg of March 2023, a major liquidity pool lost more than ten percent of its value before recovering. Holders who did nothing recovered; holders who were forced to act did not.
How to judge a stablecoin's risk
- What backs it, precisely? Cash and short-term treasuries is the strongest answer. Anything requiring explanation is weaker.
- Are reserves attested regularly, and by whom? Frequency and independence both matter.
- Can you actually redeem? A peg maintained only by market trading, without a redemption mechanism, is weaker than it appears.
- How large and liquid is it? Larger stablecoins have deeper arbitrage support pulling them back to the peg.
- What yield is offered, and where does it come from? A stablecoin paying high yield is taking risk somewhere with your principal.
Using stablecoins sensibly
- Spread across two issuers rather than holding everything in one.
- Keep part outside yield products, liquid and immediately reachable.
- Check the network before transferring. The same stablecoin exists on many chains, and sending on the wrong one is the most common way people lose them.
- Treat them as a position, not as cash. They carry issuer risk that a bank deposit does not.
Why supply matters to the whole market
Total stablecoin supply is one of the cleanest available measures of capital inside the crypto system. Expanding supply means new dollars have arrived and are waiting to be deployed; contracting supply means money is leaving.
Our mint and burn panel tracks net issuance across the eight largest issuers for the last day and week. Minting alerts are sold as a paid feature elsewhere, while the underlying supply data is published openly.
Common questions
Are stablecoins safe to hold?
Major fiat-backed stablecoins have held their pegs through several stress events, but they carry issuer risk that a bank deposit does not. Spread across two issuers, keep some outside yield products, and treat them as a position rather than as cash.
What happens if a stablecoin depegs?
Its market price drifts from one dollar. If you simply hold, the loss is unrealised and may recover. If you must sell, repay a loan, or provide liquidity during the deviation, the loss becomes real.
Which stablecoin is the safest?
There is no risk-free option, and any specific ranking dates quickly. Judge by what backs it, how often reserves are attested, whether redemption works, and how deep its liquidity is — then diversify rather than picking one.
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