Non-USD Stablecoin Settlement: The Missing FX Leg

Stablecoin supply passed $300 billion this summer, and roughly 99.4% of it is pegged to the US dollar. Euro tokens, the largest non-dollar group, are under $1 billion combined. That is the cash available on-chain today. Meanwhile central banks bought a record 289 tonnes of gold in the second quarter of 2026, most of it funded in currencies other than the dollar, and the largest compliance carbon markets clear in euros. A tokenized asset can settle atomically only if the buyer's cash is on the same ledger. For most non-US buyers, it is not.

Atomic settlement has two legs, and one of them is usually missing

Delivery versus payment means the asset and the cash move together or not at all. On a shared ledger that is a single transaction: the token representing a gold bar, a carbon credit or a limited-partner interest transfers in the same block as the stablecoin paying for it. No settlement window, no principal risk, no reconciliation between a transfer agent and a bank.

That description holds only when the buyer already holds the settlement currency as a token. A Frankfurt asset manager buying tokenized gold with euros in a bank account has to convert to a dollar stablecoin first, or the seller has to accept euro tokens that barely exist at institutional scale. Either way, somebody carries a foreign-exchange position between the moment the price is agreed and the moment the cash arrives on-chain. The Bank for International Settlements measured global FX turnover at $9.6 trillion per day in April 2025, with the dollar on one side of 89% of trades. The FX market is not the constraint. The constraint is that almost none of it settles on the ledgers where tokenized assets live.

The numbers on on-chain cash are stark. Per The Block's stablecoin data, total supply stood near $303 billion in mid-September 2026. Euro-denominated stablecoins reached an all-time high of about $848 million in early September, about 0.3% of the total, with two issuers holding over 80% of that. Yen, sterling, Swiss franc, dirham and Singapore dollar tokens are smaller still.

| Settlement currency | On-chain supply (Sept 2026) | Share of stablecoin supply |
|---|---|---|
| US dollar tokens | ~$301B | ~99.4% |
| Euro tokens | ~$848M | ~0.3% |
| All other currencies | well under $1B combined | <0.3% |

Which assets feel this most: gold and carbon credits

Not every tokenized asset has a global buyer base. A US multifamily property raising from US accredited investors settles in dollars end to end, and the FX question never appears. Two asset classes on the Commertize platform are different.

Gold is priced in dollars but bought in everything else. The World Gold Council's Q2 2026 demand report shows official-sector buying concentrated in emerging-market central banks whose reserves are managed in local currency and euros. Private demand from Europe, the Gulf, India and East Asia follows the same pattern. A tokenized gold offering that accepts only dollar stablecoins asks most of its natural buyers to run an FX trade before they can participate. The tokenized commodities pillar covers how physical bars become on-chain claims; this piece is about what those claims settle against.

Carbon credits are the sharper case. The EU Emissions Trading System, the deepest compliance market in the world, prices in euros. UK allowances price in sterling. Voluntary-market corporate buyers are concentrated in Europe and Asia. A carbon credit sponsor tokenizing a removal offtake or a registry-held inventory faces buyers whose treasury policy may not permit holding dollar-denominated tokens at all, and whose accounting is in euros. For them, a dollar-only settlement rail is not a minor friction. It is an FX exposure their controller has to approve.

Commercial real estate sits in between. The asset settles in local currency, but sponsors increasingly raise from family offices in the Gulf, Singapore and Europe. Distributions to those holders cross a currency boundary every quarter. That is a payments problem more than a settlement problem, but it is the same gap.

Three places the FX leg can land

When the buyer's currency is not the settlement currency, the exposure has to be absorbed somewhere. There are three workable designs, each with a different risk owner.

The buyer converts first. The buyer sells euros for a dollar stablecoin through an exchange or a bank, then settles. This is what happens today by default. The buyer carries basis risk between price agreement and cash arrival, usually minutes to hours, but the operational burden falls on the party least equipped for it, and it excludes buyers whose mandate does not permit holding dollar tokens.

The venue quotes in both currencies. The sponsor prices the token in dollars, and the venue displays a euro price derived from a reference FX rate. The buyer pays in euro tokens, and the venue or a market maker swaps to dollars behind the scenes. This is how on-chain FX between stablecoins works in practice, and it shifts the basis risk to the intermediary who quotes the spread. The problem is inventory: with under $1 billion of euro tokens outstanding, the swap leg is thin, and the spread widens at exactly the moments it matters.

Settle payment versus payment, then delivery versus payment. The most complete model is two atomic steps: a euro-for-dollar stablecoin swap that settles PvP, followed immediately by the asset-for-dollar DvP. Both legs are on-ledger, both are atomic, and neither party holds an unhedged position for more than one block. The design is clean, and it is roughly what the wholesale settlement pilots run by several central banks have tested. Its dependency is the same as the second option: enough non-dollar token supply for the swap leg to clear at size.

The basis risk nobody prices

FX basis risk in this context is narrower than a currency view. It is the difference between the reference rate used to agree a price and the rate actually achieved when the cash leg clears. In a bank FX market with continuous liquidity, that gap is a few basis points. In an on-chain euro stablecoin market a few hundred million dollars deep, a single large ticket can move the rate more than the asset's expected quarterly yield.

Sponsors should ask three questions before accepting non-dollar subscriptions on a tokenized raise:

The workable answer for most sponsors today is to settle in dollar stablecoins, state the reference rate and cutoff in the subscription terms, and let buyers with a non-dollar mandate convert through their own bank. That is not elegant, but it is honest about where the liquidity is. Tokenized assets on the Commertize marketplace settle on-chain against the cash leg the buyer actually holds, and the reference-rate rule belongs in the offering documents, not in a support ticket.

What changes the picture

Two developments would move the FX leg from workaround to feature. The first is supply: euro stablecoins grew about 22% year to date, and the regulatory framework in Europe now permits bank-issued euro tokens at scale. If a handful of large banks issue, the swap leg deepens quickly. The second is tokenized deposits, which let a buyer's own bank hold the euro leg as a ledger balance rather than a bearer token. That addresses the treasury-policy objection that blocks many European and Gulf buyers today.

Neither is guaranteed, and a sponsor planning a raise in the next twelve months should assume the dollar rail is the one that clears. The value of on-chain settlement is that it removes the settlement window, the principal risk and the reconciliation between registrar and bank. It does not remove currency. It moves the FX leg into the open, where it can be priced, assigned and disclosed. That is an improvement over a wire that arrives three days later at whatever rate the correspondent bank applied. See how the platform handles settlement for where the cash leg sits in an issuance.

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