Stablecoin models and failure modes

Different mechanisms, different failures

Stablecoins reach a stable target in fundamentally different ways, and the mechanism determines what can break. A reserve-backed stablecoin is issued by a company that holds assets off-chain and promises redemption. Its risks are those of a financial institution: the quality and location of the reserves, the solvency of the issuer, its banking access, its jurisdiction, and its willingness to serve particular customers.

A crypto-collateralized stablecoin is backed by assets locked in contracts, usually worth more than the tokens issued. Its risks are technical and market-driven: contract correctness, oracle accuracy, liquidation mechanics that must work during exactly the volatility that stresses them, and governance decisions about parameters.

Designs that rely primarily on algorithmic incentives rather than on collateral have a different profile again, one in which the mechanism depends on continued market confidence. History in this category includes rapid and complete failures, and the general lesson is that a peg maintained by expectations can stop being maintained very quickly.

Price and redemption are not the same right

It is easy to conflate two separate things: the token trading near its target on an exchange, and the ability to exchange it with the issuer for the underlying asset.

For many reserve-backed stablecoins, direct redemption is available only to approved institutional customers above a minimum size. An ordinary holder does not have a redemption right at all—they have the ability to sell to someone else at whatever price the market offers. Those are different guarantees, and the difference only becomes visible under stress, when the market price is exactly what stops being reliable.

During stress, several things degrade at once: market liquidity thins, the issuer's banking access may be questioned, reserve quality is scrutinised, contracts may face congestion, and the venues you planned to exit through may restrict trading. A peg is a claim about normal conditions.

Issuer powers you are agreeing to

Most major reserve-backed stablecoins include the ability for the issuer to freeze or blacklist addresses. This is used for legal compliance and to respond to theft, and it is a real property of the asset rather than a hypothetical.

The practical implication is that this class of asset is not bearer-like in the way a network-native coin is. Holding it involves an ongoing relationship with an issuer who retains authority over your specific balance. That may be entirely acceptable, but it should be a known part of the decision rather than a discovery.

Trace the full claim

Before holding a meaningful amount, identify the issuing entity and where it is incorporated, what reserve reporting exists and what it actually attests, who may redeem directly and on what terms, which networks carry official issuance, what freeze powers exist, and the specific venue and route you would use to exit.

The bridged-versus-native distinction matters more than its obscurity suggests. The same ticker on a different network may be a bridge-issued representation rather than the issuer's own token—a claim on a bridge's holdings, carrying the bridge's risk rather than the issuer's. Verify the contract address against the issuer's own documentation, not against a name in a list.

• Which legal entity owes what, and where?
• Who can redeem directly, and at what minimum?
• What backs the token, and who verifies it?
• Can the issuer freeze an individual balance?
• Is this native issuance or a bridged representation?