First Digital USD

FDUSD is a fiat-collateralised dollar token issued out of Asia, with reserves held in segregated trust arrangements. Its distribution came primarily through exchange listings and zero-fee trading pairs rather than through organic demand, which is the most important fact about how it reached scale.

Trust structures separate reserves from the issuer

Reserves held in segregated trust are intended to sit outside the issuer's estate if the issuer fails — a stronger arrangement than an unsecured claim on a company. Whether that protection works in practice depends on the jurisdiction and the specific legal structure, which is worth reading rather than assuming.

Exchange promotion built the float

Zero-fee trading pairs and prominent placement on a major exchange drove adoption directly. That is a legitimate route to scale and it means circulation reflects a commercial arrangement rather than independent preference. Circulation built this way can also unwind when the arrangement changes, which is the risk to understand.

Attestation practice is the thing to check

For any fiat-backed token the questions are the same: who holds the reserves, what are they invested in, how often is that verified, and by whom. These determine whether the peg is a promise or a verifiable position, and they are more informative than any figure about circulation.

Jurisdiction shapes the recourse

Issuers operating outside the US and EU regulatory perimeters face different supervisory requirements and offer different avenues if something goes wrong. That is not automatically worse and it is materially different, and holders should know which regime applies to them.

Where it fits

FDUSD is useful for traders on venues where it is a primary quote asset with fee advantages. For holding meaningful balances over time, tokens with longer records and more established attestation practices carry less uncertainty.