Which chains stablecoins live on, and who distributes them

Where the dollars sit

On 4 September 2026 DefiLlama counted about 312 bn USD of stablecoins across all blockchains. Two chains held almost four fifths of it: Ethereum with about 147 bn USD and Tron with about 94 bn USD. Solana, BNB Chain and Hyperliquid followed a long way behind.

Each chain earns its share for a different reason. Ethereum is where most lending markets, exchanges and trading protocols live, so a large stock of USDC and USDT sits there as collateral and working capital. Aave, the largest lending protocol, held about 17.7 bn USD of deposits on 4 September 2026. Tron is where people send USDT to each other. Solana is fast and cheap, and it has become a large venue for USDC payments and trading. Hyperliquid is a chain built for one exchange; almost all of its stablecoins are USDC posted as margin for futures trading.

Below them sit the layer 2 networks: chains such as Base and Arbitrum that run on top of Ethereum, batch many transactions together and settle them on Ethereum, which makes each transfer far cheaper. Base, launched by Coinbase, holds a large stock of USDC.

The practical lesson is that "which chain wins" depends on the question. Ethereum wins on supply and on depth of financial markets. Tron wins on person-to-person transfers. A chart of total supply alone hides that split.

Why Tron carries most of USDT

Tron holds about half of all USDT, more than Ethereum. It got there by being cheap and by being first in the places where people needed dollars.

The mechanism is Tron's fee model. Instead of paying gas on every transfer, a user can lock up, or stake, the chain's own token, TRX, and receive a daily allowance of network resources. A heavy user who stakes enough TRX sends USDT for close to nothing. A casual user who does not stake pays by burning TRX, roughly 1 to 3 USD per transfer, which is still less than a bank wire to many countries. Tether later added a program that lets users pay that fee in USDT itself, so a phone with only dollars on it can still send.

The result is a chain used mostly for payments between people. CoinDesk Research found on 21 July 2026 that 93% of Tron's stablecoin transfer volume was peer-to-peer, the highest share of any chain it tracked. For many users it works as a dollar account that needs no US bank.

Tron also shows chain monoculture, a chain whose stablecoin supply is almost entirely one token. About 98% of Tron's stablecoins are USDT. Hyperliquid is the mirror image with USDC. Monocultures are sticky: once every wallet, exchange and merchant on a chain uses one token, a rival has to win them all over at once.

Native and bridged tokens

The same ticker on two chains can be two different promises. The difference decides who owes you a dollar if something breaks.

A native token is minted directly by the issuer on that chain and counts in the issuer's reserve. Native USDC on Solana is Circle's own obligation, redeemable at Circle like USDC on Ethereum. A bridged token is a copy created by a third-party bridge: the bridge locks the original token on one chain and mints a stand-in on another. The stand-in is a claim on the bridge, not on the issuer.

The classic example is USDC.e on Arbitrum. Before Circle issued native USDC there in June 2023, the USDC on Arbitrum was a bridged copy backed by tokens locked on Ethereum. It did not appear in Circle's reserve reports, and redeeming it meant going back through the bridge first.

The danger of the bridged model is the pool of locked tokens. If a bridge is hacked or its operators disappear, the stand-ins lose their backing while the issuer's reserve stays intact. In July 2023 the Multichain bridge collapsed and more than 120 mn USD was drained from its Fantom side. Bridged USDC on Fantom fell to about 22 cents, while native USDC everywhere else stayed at one dollar. Circle froze some of the stolen funds, but it had never owed the bridged copies anything.

How tokens move between chains

Issuers have answered the bridge problem in two ways, and the two largest chose different paths.

CCTP, Circle's Cross-Chain Transfer Protocol, launched in 2023 and works by burn-and-mint: a user burns USDC on the source chain, Circle's service confirms the burn, and native USDC is minted on the destination chain. No pool of locked tokens exists at any point, so there is nothing to steal in the middle. Version 2, released on 11 March 2025, added fast transfers that settle in seconds. Circle reported more than 110 bn USD moved through CCTP by 14 November 2025. Circle also created a standard, in November 2023, for converting a third-party bridged USDC into native USDC without disrupting holders, and native USDC grew from 11 chains in early 2024 to 28 in April 2026.

USDT0 is Tether's lock-and-mint answer: a version of USDT built on LayerZero's cross-chain token standard and run by a separate operator, Everdawn Labs. Real USDT sits locked in a contract on Ethereum, and USDT0 is minted on other chains against it. The model is popular: Tether reported more than 70 bn USD of transfers through USDT0 in under a year, and invested in LayerZero Labs on 10 February 2026. It keeps a locked pool, so a failure of the bridge contracts or its verifiers would hit USDT0 holders, not holders of USDT on Ethereum.

The new payment chains

Since 2025 a group of chains has been built specifically for stablecoins. A stablecoin-first chain uses a dollar token to pay transaction fees and aims for near-zero cost and settlement in under a second. The best-known are Plasma, backed by the Tether ecosystem; Tempo, incubated by Stripe; Arc, built by Circle; Stable, linked to Bitfinex; and Codex.

They are still small. Plasma, the largest by stablecoin supply, held about 0.9 bn USD on 4 September 2026, under 0.3% of the market. It launched in September 2025 with billions in deposits attracted by incentives, and most of that money left within months when lending protocols pulled out. Tempo opened its mainnet on 18 March 2026, and outside validators including Stripe and Visa joined in April; the network remains permissioned.

Arc is the one to watch. Circle opened its public mainnet on 16 September 2026, with a founding group of validators that includes BlackRock, DTCC, Mastercard, Standard Chartered and Visa. Fees are paid in USDC. These chains matter because each one is an issuer or payment company trying to own the rails its token runs on, instead of renting space on Ethereum or Tron.

Distribution is the moat

Anyone with a banking partner and a lawyer can issue a fully backed dollar token in a few weeks. The hard part is getting it into the apps where people already keep money. Distribution is that path from issuer to user: exchanges, wallets, fintech apps, payment processors, merchants, lending protocols and custodians, each of which wants a cut.

The clearest case is the deal between Circle and Coinbase. Their agreement of August 2023 gives Coinbase all the reserve income earned on USDC held on Coinbase's platform, and half of the remaining reserve income on USDC held elsewhere. Circle paid Coinbase about 908 mn USD under that deal in 2024. The agreement was renewed in August 2026 through 2029 on the same structure. Circle mints the token and runs the reserve, yet the exchange that puts USDC in front of users takes a share of income close to what Circle keeps. The business chapter runs the numbers.

PayPal shows the other side. Its PYUSD token, issued by Paxos, grew fast while PayPal paid holders rewards, peaking at about 4.1 bn USD in early 2026. When the rewards campaign ended, supply fell to about 3.0 bn USD by September. The token did not change. The incentive in the distribution channel did.

Some distributors are becoming issuers. Revolut, with about 80 mn retail customers, launched its own euro stablecoin on 26 August 2026, issued through a Luxembourg entity of Bridge, the stablecoin firm Stripe bought in 2025. The same week it dropped USDT for customers in the European Economic Area because of EU rules. Nubank in Brazil went the partnership route with Circle. Both moves follow the same logic: whoever owns the customer relationship decides which dollar the customer holds.

Concentration is the result. On 4 September 2026 USDT and USDC together held about 83% of dollar stablecoin supply, according to DefiLlama. New issuers with strong backers grew quickly in 2026, but from a small base.

What to watch next

• Arc's first months of real use: Circle's chain went live on 16 September 2026. Watch how much USDC settles there and whether its big-name validators route their own business onto it.
• USDT0 versus native USDT: Tether expands across chains through a locked pool on Ethereum. Growth there raises the cost of any failure in the bridge contracts.
• Tron's share of payment volume: Tron's lead in peer-to-peer transfers rests on cheap fees and habit. A cheaper, regulated alternative in its core markets would show up here first.
• Distribution deals after US rules take effect: the US yield ban and a pending federal rule on affiliate rewards could force changes to reward programs like Coinbase's, which would shift where USDC is held.
• Fintechs issuing their own tokens: Revolut's euro token is an early case. If more large apps issue rather than distribute, the two leaders lose shelf space.