A merchant wants to quote a price without recalculating it after every cryptocurrency price movement. A stablecoin addresses that need: it is a token that aims to track a relatively stable reference value, often one dollar or one euro. “Aims” matters: the name is not a guarantee.

After smart contracts, we can separate the token, its stabilisation mechanism and the service accepting it.

Why use a more stable unit?

Stablecoins can support payments and accounting within blockchain applications. Participants use a unit linked to a familiar reference instead of an asset whose price may move sharply within a day.

Network fees and the constraints of moving money into a bank account remain. A token may circulate on a blockchain while bank conversion depends on an intermediary. Ethereum describes several stablecoin uses.

What supports the reference?

Mechanisms differ. Some tokens rely on reserves held by an issuer; others use crypto-assets deposited as collateral. Other designs give supply adjustments and market incentives a substantial role. Systems can combine mechanisms.

Ask not only how many tokens exist, but which assets, rules and parties support conversion. The NIST technical report compares these designs and dependencies.

As a documentary example, Circle publishes information about reserves associated with its stablecoins. An issuer’s transparency page helps readers inspect stated holdings, dates and reports; it does not replace reading redemption conditions.

Market price and redemption are different

You might sell a token to another buyer or, if eligible, redeem it with its issuer. These are different routes with potentially different fees, delays and access conditions.

The USDC terms outside the European Economic Area and Circle Europe redemption policy illustrate why conversion rights belong in the applicable documents. Do not assume every token holder has the same direct access to an issuer.

A depeg is a departure of the market price from the intended reference. The ledger can keep working while the market questions reserves or redemption availability.

Stable in which currency?

Consider an entirely fictional example. Lina holds 100 tokens targeting one dollar each. Initially, one dollar equals €0.90, so the holding is worth about €90 before fees. Later, one dollar equals €0.85. Even if the token still trades at one dollar, the holding is then worth about €85.

Stability against the dollar does not automatically protect a euro budget. If the token also falls below one dollar, that adds another effect.

Yield offered by an application is a further layer. You need to understand its source and the associated exposure to loss. Yield is not a natural property of the word stablecoin.

Check your understanding

A token advertises a €1 reference and a 12% return. Is it simply equivalent to a euro in your pocket? No. Examine the reserves, conversion rights and separate mechanism funding the return.

Remember: stablecoins support some uses of a unit of account on a blockchain. Their reference, market price and your redemption options are different things.

Next: using a Web3 application while understanding each request.