It is reasonable to be suspicious of this. Something that came out of the same world as Bitcoin, which does whatever it likes, is supposed to sit perfectly still at exactly one pound. Why would it?
The answer has two parts: what the issuer promises, and what everyone else does when that promise looks shaky.
Part one: somebody is holding the money
For every coin in existence, the issuer holds a real pound. Not an approximation, not a clever arrangement — a pound, in a bank account or in short-dated government bonds, which are about as close to cash as an investment gets.
And they promise to swap back. Hand in a coin, get a pound. That promise is the entire mechanism.
Part two: everyone else enforces it
This is the part people miss, and it is the clever bit.
Suppose the price slipped to 98p. Anyone can buy coins at 98p, hand them to the issuer, and get a pound. That is two pence of free money for doing nothing, so people do it — in volume, automatically — and the buying pushes the price back to a pound.
If it went to £1.02 the reverse happens: put in a pound, get a coin, sell it for £1.02. Selling pushes it back down.
The price does not hold because someone is maintaining it. It holds because moving away from a pound pays people to push it back.
Nobody has to be public-spirited. The self-interest of strangers does the work, continuously, and in tiny increments long before anyone notices a wobble.
Which is why the reserve is the only thing that matters
Every part of that depends on one assumption: that the money is actually there.
If an issuer has quietly invested the reserves in something risky, or issued more coins than it holds money for, the promise is hollow. The arbitrage that keeps the price at a pound only works if the redemption at the end of it is real. This is exactly what has gone wrong in the past, and it is why the reputation of the whole idea took years to recover.
And why the rules are the interesting news
In June 2026 the Bank of England published how sterling stablecoins will work in Britain, and almost all of it is about this question.
- What the reserves must beHeld at the Bank of England and in short-term government debt, not in whatever the issuer fancies.
- Kept separateLegally and operationally apart from the issuer's own money, so a failing issuer cannot reach them.
- Redeemable at face valueOn demand, within a day, with the issuer bearing the cost.
- AuditedIndependently, regularly, rather than on the issuer's word.
Not exciting. Precisely the point. The mechanism was always sound in principle; what it needed was somebody checking the cloakroom.
Two honest notes. A stablecoin is only ever as good as its issuer. "Stablecoin" is not a guarantee, it is a design, and a badly run one can fail. Which issuer, under whose rules, is the question worth asking.
And sterling ones do exist, from UK firms registered with the FCA — but the entire sterling market is around twenty-seven million dollars against hundreds of billions in dollar coins, and none is yet authorised under the Bank's new regime. So most trade is still dollar-denominated, which is why UK businesses using them need the arithmetic doing properly.
Ceodore records a sterling coin and a dollar one the same way. The sterling version is simply an easier sum.