PayPal 的新平台允许任何人发行由美元支持的美元

Summary PayPal, M0, and MoonPay launched PYUSDx on September 9, a platform letting any business issue an application-specific stablecoin backed by PayPal USD.

Three issuers are live at launch, Saturn, Concrete, and Cap, which the companies say have collectively processed more than $100 million, with USD.AI and Fairblock expected next.

The structure has two layers: PYUSD is issued by Paxos Trust Company, a federally regulated national banking association, and backed by dollar deposits and Treasuries; PYUSDx tokens are issued by MoonPay Digital Assets Limited and backed by PYUSD.

Tokens created on PYUSDx are not PayPal or Paxos products and cannot be sent, received, or used inside PayPal or Venmo.

The GENIUS Act requires permitted issuers to back payment stablecoins one to one in named high-quality liquid assets, and a token backed by another stablecoin, issued by a different entity, is a structure the statute does not obviously address.

Draw the plumbing and something odd falls out.

PayPal, M0 and MoonPay went live on September 9 with PYUSDx, a platform that lets any business issue its own branded stablecoin without touching reserves, custody or redemption infrastructure. Three issuers launched with it. More than $100 million already processed between them. The pitch from all three partners is that the product layer should belong to whoever is building the product, and the monetary plumbing should belong to people who do plumbing. That is a good pitch and a sensible product.

Now draw it.

PYUSD is issued by Paxos, a federally regulated national banking association, backed by dollar deposits and Treasuries. Fine. Compliant. Boring, in the way a reserve asset should be.

PYUSDx tokens are issued by MoonPay Digital Assets Limited. Their reserve asset is PYUSD.

So the thing backing the second token is the first token. The GENIUS Act, signed in July 2025 and still being turned into regulations, tells you who may issue a payment stablecoin and what has to sit behind it. Cash. Insured deposits. Short-dated Treasuries. Repos against Treasuries. Money market funds holding those.

It does not say anything about a stablecoin backed by a stablecoin, issued by someone else entirely. Nobody covering the launch has asked about it. It is worth asking now, while the rules are being drafted, instead of in eighteen months when they are not.

What was actually built

Three companies, three jobs. The details matter because they decide who is on the hook for what.

M0 supplies the infrastructure. Its platform lets an issuer configure individual components of a stablecoin instead of accepting a fixed model: token name, access restrictions, reward distribution, collateral policy, and cross-chain availability are all set by the issuer. M0’s chief executive has described the design intent as making the product layer belong to the builder, and the company also works with Stripe-owned Bridge and with regulated custody firms.

MoonPay issues the tokens and holds the backing. MoonPay Digital Assets Limited is the issuing entity for PYUSDx-layer tokens and holds the PYUSD that backs them. It also contributes onboarding and distribution.

JUST IN: PYUSDx now has $100 million in stablecoin assets under management

The PayPal-linked launchpad is running on MoonPay pic.twitter.com/Zxi0w9a3y9 — crypto.news (@cryptodotnews) September 10, 2026

PayPal supplies PYUSD. The underlying stablecoin remains a Paxos-issued product reserved with dollar deposits, Treasuries, and similar cash equivalents. PayPal’s role is supplying the asset that sits underneath and the ecosystem connection.

The disclaimers are specific and worth reading. Tokens created on PYUSDx are not PayPal or Paxos products. They cannot be sent, received, or used inside the PayPal and Venmo applications. That is an unusual carve-out for a platform named after a company’s own stablecoin, and it tells you the partners have thought carefully about where liability sits.

At launch: Saturn, Concrete, and Cap, with more than $100 million in combined processed volume. Cap migrated part of its cUSD onto PYUSDx so that a portion of its covered-credit float would rest on PYUSD instead of more volatile decentralised finance liquidity, which is a sensible use of the product and the clearest illustration of what it is for. USD.AI and Fairblock are next.

The two-layer question

Nothing here accuses anyone of anything. This is a question the statute has not answered, asked while there is still time to answer it.

The GENIUS Act, enacted July 18, 2025, restricts issuance of payment stablecoins to permitted issuers across four routes and requires reserves backing outstanding tokens one to one in specified high-quality liquid assets: currency, insured deposits, short-dated Treasury bills, Treasury-collateralised repurchase agreements, and money market funds holding those instruments. Our dedicated page on the law sets out the framework in full.

PYUSD fits that cleanly. Paxos is a federally regulated national banking association, the reserves are cash and Treasuries, and the disclosure obligations apply.

PYUSDx tokens are a different object. They are issued by a separate entity, and their reserve asset is PYUSD, not the asset classes the statute names. Three questions follow and none has a public answer.

Is a PYUSDx token a payment stablecoin? The statutory definition captures a digital asset used for payment or settlement, redeemable at a fixed monetary value, whose issuer represents it will maintain stable value. An application-specific dollar token used inside a credit product appears to meet that description.

If it is, who is the permitted issuer? The entity issuing it is MoonPay Digital Assets Limited, not Paxos. Permitted status attaches to issuers, not to reserve assets, and the four routes to permitted status all describe entities, not backing arrangements.

Does PYUSD count as a permitted reserve asset? The named list does not include other stablecoins. Whether a token fully backed by a compliant stablecoin satisfies a one-to-one reserve requirement is a reasonable reading and it is not the reading the text supplies on its face.

None of this suggests anyone is doing anything improper. The Act does not take effect until the earlier of January 18, 2027 or 120 days after final implementing regulations, and the agencies missed their one-year rulemaking deadline in July 2026 with proposals issued and final rules outstanding. Building a product during that window is entirely legitimate. The point is narrower: the rules that will govern this structure are being written now, and this structure is not one the drafters obviously had in mind.

Why anyone would build it this way

The commercial logic is genuinely good, which is why this structure will spread whatever the regulators decide.

Reserves are the hard part. Issuing a compliant stablecoin means holding, custodying, and reporting on cash and Treasuries, contracting an accounting firm for monthly attestation, and building redemption infrastructure. That is a bank-adjacent operation with bank-adjacent costs, and it is completely disproportionate for a company that wants a branded dollar inside its own application.

The alternative was worse. Before platforms like this, a business wanting an application-specific dollar either built the whole stack, partnered bilaterally with an issuer on bespoke terms, or used an existing stablecoin and accepted no control over its properties. All three are bad options for a small team.

Configurability is the product. Access restrictions, reward distribution, collateral policy, and cross-chain availability set per issuer is a different offering from a single stablecoin with fixed properties. Cap’s use case, resting covered-credit float on PYUSD instead of volatile decentralised finance liquidity, is exactly the kind of thing that needs configuration and not a generic token.

And for PayPal it solves a distribution problem. PYUSD sits around $2.81 billion, eighth in a stablecoin market near $305 billion where Tether holds roughly 60%. Growing that through direct payments means competing with incumbents on their own ground. Growing it as a reserve asset for other people’s tokens means every PYUSDx issuer that scales needs more PYUSD behind it, expanding the footprint without PayPal operating any of those applications. That is a second lever on demand and a considerably cheaper one.

You might also like: GENIUS Act stablecoin framework

What the layering actually adds

Two layers is better than one in one respect and worse in another.

On the positive side, the backing asset is a regulated, attested, cash-and-Treasuries stablecoin instead of an ad hoc reserve. An application dollar backed by PYUSD is substantially better collateralised than one backed by a decentralised finance yield strategy, which is precisely why Cap moved. Layering onto a compliant base is a meaningful improvement over the alternatives that existed before.