Summary
Michelle DG leads with the number that upends a three-year assumption.
Ethereum was the most-used single chain on SimpleSwap, a self-custodial multi-source swap aggregator, in the first half of 2026, at 31.0% of swaps — but everything outside the four biggest chains accounted for 71.4%.
The tail is not noise; it is where the traffic is.
The measure is explained before it is used: each row answers what share of swaps had at least one leg on that chain, and since nearly every swap involves two chains, one transaction appears in several rows.
Cross-chain swaps made up 91.8% of the half on simpleswap.io and held between 90.3% and 93.3% monthly even as the spot market roughly halved.
The sharper column divides a chain's share of money by its share of swaps.
A swap involving Ethereum is worth about twice one involving BSC; Ethereum and TRON carry more value than their transaction counts suggest.
Then the top row again: chains outside the big four sit at 1.04, which is to say average. The comfortable belief that small chains carry small amounts is simply wrong.
A second dataset is brought in rather than assumed.
Rubic ran the same comparison on its own traffic: TRON climbed from 4.2% to 9.4% of cross-chain transactions and from 11.9% to 38.4% of cross-chain money.
On the long tail the two disagree — outside Rubic's top four, share of transactions held while cross-chain money nearly halved.
Talisman Wallet's CEO adds the view from a multi-chain wallet: cross-chain activity has become routine inside the wallet, because users follow assets rather than chains.
The conclusion reframes what to ask about a venue. For years the question was how many assets it lists, because that is easy to compare and easy to advertise.
If nine swaps in ten cross a chain boundary, reach is the more useful measure.
“The comfortable assumption is that small chains carry small amounts, and it is wrong.”
Key Takeaways
- Ethereum led as a single chain at 31.0% of swaps; chains outside the big four carried 71.4%.
- Cross-chain swaps held 90.3-93.3% every month while the spot market roughly halved.
- Value per swap on small chains sits at 1.04 of average — not the small amounts usually assumed.
- Rubic's independent data shows TRON rising from 11.9% to 38.4% of its cross-chain money.
- The two datasets disagree on the long tail, and the article reports that rather than smoothing it over.
- With nine swaps in ten crossing a boundary, reach matters more than listing count.
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