Everyone Wants the Receipt

$33 Trillion Passed Through a Dollar You Can't See

In 2025, stablecoins processed $33 trillion in on-chain transactions. That's roughly double Visa's annual volume. More than Mastercard and PayPal combined.

Most of that wasn't remittances or coffee purchases. It was trading. Perpetual futures, prediction markets, lending protocols — all denominated in digital dollars that live on blockchains. Every time a trader opens a gold perp on Hyperliquid or places a bet on Polymarket, stablecoins move. And every dollar that moves through these systems has to come from somewhere.

That somewhere is where the money is.

The Business Model Nobody Talks About

Here's how a stablecoin issuer makes money: you deposit $1. They mint 1 USDC (or USDT, or PYUSD). Your dollar goes into US Treasuries earning roughly 4% annually. You get no interest. They keep all of it.

Tether made over $10 billion in profit in 2025. It holds $141 billion in US Treasuries — making it the 17th largest holder of American government debt on Earth. Circle, the company behind USDC, generated $2.7 billion in revenue and went public on the NYSE.

The math is straightforward. Every additional $1 billion in circulation means approximately $40 million per year in risk-free revenue. No trading risk. No credit risk. Just the spread between what they earn on reserves and what they pay holders, which is nothing.

This changes the incentive structure entirely. Stablecoin issuers don't just want you to hold their token. They want it moving — through DEXs, through prediction markets, through lending pools. The more it circulates, the more they need in reserves, the more they earn.

Why DEXs Are the Prize

Hyperliquid processed $2.95 trillion in trading volume in 2025. Every dollar of that was settled in USDC. Lighter — USDC. EdgeX — native USDC via Circle's CCTP. Polymarket did over $21 billion — all USDC. Meanwhile Aster, processing $6 billion daily, runs entirely on USDT and its own yield-bearing USDF. The battle lines are drawn by quote asset.

This isn't like being accepted at a coffee shop. A single perp DEX can drive billions in daily stablecoin throughput. On Hyperliquid's peak day, $32 billion moved through the protocol. That volume keeps stablecoins in circulation rather than sitting idle in wallets.

For issuers, the logic is obvious: get your stablecoin adopted as the quote asset of a major trading venue, and you've locked in a permanent revenue stream proportional to that venue's growth. It's the digital equivalent of being the reserve currency of a small country — except the country is growing at 100% per year.

The Arms Race

This is why 2025-2026 turned into a stablecoin arms race across DeFi — and the deals are getting aggressive.

Circle struck a revenue-sharing agreement with Lighter over its $920 million USDC treasury. The interest income from US Treasuries backing those reserves gets split between Circle and Lighter — analysts estimate $30-40 million annually flowing to Lighter, part of which funds LIT token buybacks. It's the same structure Circle already has with Coinbase and Bybit, now extended to a DEX doing $4 billion in daily volume.

With EdgeX, Circle went further — Circle Ventures made a direct strategic investment, becoming the sole investor. Then it deployed native USDC and Cross-Chain Transfer Protocol on EDGE Chain, embedding USDC into EdgeX's trading, margin, and settlement systems at the infrastructure level. Circle called it their "first expansion at a system-wide level into decentralized derivatives infrastructure."

On the other side, Aster — the second-largest perp DEX by market share at roughly 20% — built its own yield-bearing stablecoin USDF, pegged to USDT with collateral deployed on Binance for delta-neutral strategies. No Circle deal. No USDC. The Binance ecosystem has its own settlement currency ambitions.

Ethena built an entire perp DEX — HyENA Trade on Hyperliquid's HIP-3 — that uses only USDe as collateral. If HyENA scales to $500 million in daily volume, Ethena's revenue share from trading fees alone hits $41-82 million per year. That's on top of the yield it already earns on USDe reserves.

Even Hyperliquid itself got into the game. USDH, the protocol's native stablecoin, launched with a revenue-sharing model — 50% of USDH revenue goes back to the Hyperliquid Assistance Fund. The platform decided that depending on Circle for its settlement layer was a strategic risk worth eliminating.

USDC Is Winning. For Now.

The scoreboard as of early 2026: USDC captured 64% of all on-chain stablecoin transaction volume in 2025, surpassing USDT for the first time in a decade. JPMorgan flagged it. Circle's stock rallied 87% in a month.

USDT still has 2.4x the market cap — $184 billion versus $77 billion. But market cap measures how much is sitting. Transaction volume measures how much is moving. In DeFi trading, USDC dominates the flow.

The duopoly is also eroding. USDT and USDC's combined market share fell from 88% in early 2025 to roughly 82% by late 2025. New entrants are chipping away: USDe at $5.9 billion, USD1 (World Liberty Financial) at $4.4 billion, PYUSD at $4.1 billion, BlackRock's BUIDL at $2.8 billion.

USDT faces a specific headwind in Europe, where MiCA regulation has led to delistings on compliant exchanges. USDC, fully regulated, is picking up the slack.

Quote Asset as Moat

The reason this matters beyond stablecoin company earnings is structural.

Whichever stablecoin becomes the default quote asset of a trading venue shapes the entire ecosystem built on top of it. Liquidity pools form around it. Margin systems depend on it. Settlement infrastructure is built for it. Switching costs become enormous.

This is why Hyperliquid launched USDH rather than staying on USDC forever. Why Polymarket explored creating its own stablecoin. Why Ethena funded an entire HIP-3 DEX to bootstrap USDe circulation.

The quote asset isn't a neutral utility. It's the most strategic position in the stack.

What Comes Next

The euro stablecoin market doubled in the year after MiCA launched, with monthly volume rising 9x to $3.83 billion. Japan's first regulated yen stablecoin, JPYSC, is targeting Q2 2026 for launch. Non-USD stablecoins are coming — but for derivatives trading, USD remains the universal denomination by an overwhelming margin.

The real battle is closer to home. Mastercard paid up to $1.8 billion to acquire BVNK, a stablecoin infrastructure company. Circle went public. Tether is exploring a US-domiciled stablecoin. Every major financial institution has realized that the settlement layer of on-chain trading is too valuable to cede to someone else.

Thirty-three trillion dollars flowed through stablecoins last year. Most of it through trading venues. The issuers who capture that flow capture a perpetual revenue machine — $40 million per year for every billion in circulation, compounding as on-chain volume grows.

The receipt is the product. And everyone wants it.

At Blackboard, we're building the gateway where these stablecoins actually get used — trading perpetuals, prediction markets, and real-world assets, all from a single interface.