Stablecoins can share the same price target while relying on very different mechanisms. The backing assets, redemption rules, smart contracts, and responsible organizations determine the risks.
Reserves and onchain collateral
Fiat-backed tokens depend on an issuer and offchain reserve assets. Crypto-backed designs normally lock onchain collateral and use overcollateralization or liquidation rules to absorb price moves.
Collateral quality matters as much as quantity
Liquidity, custody, credit exposure, price volatility, and legal claims all affect how useful backing assets are during stressed redemptions.
Algorithmic designs depend on incentives
Some systems try to influence supply through formulas, paired assets, or market incentives. If confidence or liquidity disappears, the mechanism may be unable to restore the target price.
Risks are specific to the stability mechanism
An issuer-backed token carries issuer and banking risk; a crypto-backed token adds oracle and liquidation risk; an algorithmic design depends heavily on market incentives.
Sources
Educational information, not investment advice.