Stablecoin transactions are more than just payments

Researchers analyzed 593 million event logs from 141 million Ethereum transactions involving three major U.S. dollar stablecoins.

They developed a replicable framework using archive node data, public contract labels, and event signatures to measure transaction complexity.

The study found that nearly 60 percent of all stablecoin transfer events occur within complex transactions, which combine trading, lending, arbitrage, and settlement, rather than as simple standalone payments.

This complexity is a first-order feature of stablecoin activity.

Furthermore, the three stablecoins examined are not used interchangeably, exhibiting distinct patterns across transaction structures, urgency, and timing, consistent with their varied institutional designs and economic functions.

Treating transfers as standalone payments risks misclassifying a large share of on-chain stablecoin use, with significant implications for empirical measurement, market monitoring, and policy frameworks.

The paper formalizes a crucial distinction between stablecoin transfers and the complex transactions embedding them.

Smart contracts enable multiple financial operations—such as payments, asset swaps, and collateral adjustments—to be bundled into a single, atomically executed transaction.

Consequently, a stablecoin transfer often represents only one element of a broader economic interaction, not a standalone payment.

This distinction is vital for policy and standard-setting, especially for financial market infrastructures (FMIs).

Many complex stablecoin transactions are analogous to 'money settlement' in wholesale markets, which are systemic and subject to rigorous risk management under CPMI-IOSCO Principles.

Ignoring this context overstates simple payment activity and obscures stablecoins' broader economic function.