Uniswap and Spark build $150M stablecoin FX layer as market hits $300B

Uniswap and Spark are building shared liquidity infrastructure for a future where hundreds of stablecoins compete on blockchain rails, as banks and fintechs increasingly enter the $300 billion market.

Spark and Uniswap plan to migrate $150 million in liquidity to Uniswap v4, creating a shared network for moving between stablecoins as traditional financial institutions push into digital dollar issuance, the companies said Thursday.

"The next generation of stablecoins won't be defined by who can issue another digital dollar," Spark CEO Sam MacPherson said. "It will be defined by the infrastructure that allows hundreds of issuers to operate together at global scale."

The initiative starts with liquidity pools combining Sky's USDS, Tether's USDT and PayPal's PYUSD on Uniswap v4, the latest version of the decentralized exchange. Idle capital in the pools can earn yield until needed for trading, the companies said. The list of supported stablecoins could grow as more issuers enter the market.

The stablecoin market could expand from $300 billion to $4 trillion by 2030, Citi projected, driven by cross-border payments and tokenized financial assets. Much as foreign-exchange markets connect fiat currencies, Spark is betting that stablecoins will need a shared infrastructure layer to move efficiently between issuers — and that the liquidity network, rather than any single stablecoin, will become the sector's key competitive battleground.

Banks and credit unions enter the stablecoin race

The push comes as U.S. lawmakers advance regulatory frameworks encouraging banks, payment firms and fintechs to issue stablecoins. The National Credit Union Administration in February proposed a licensing framework for payment stablecoin issuers operating through credit union subsidiaries, with public comment closing in April.

Credit unions managing roughly $25 billion in combined assets recently joined an early-access program from Stablecore, Circuit and Curql to test stablecoin payments, tokenized deposits and crypto on- and off-ramps through their existing core banking systems, the companies said Wednesday. Stablecore gained access to approximately 1,670 bank and credit union clients through the Jack Henry Fintech Integration Network in February.

Outside the U.S., SBI Group and Startale launched the yen-pegged stablecoin JPYSC in Japan on Wednesday, issued by SBI Shinsei Trust Bank. Ripple and SBI Group also launched the dollar-backed Ripple USD stablecoin in Japan through SBI VC Trade the same day, after receiving approval under Japan's regulatory framework for foreign-issued stablecoins.

What the infrastructure means for DeFi

The Spark-Uniswap initiative positions both protocols as critical plumbing for a multi-stablecoin future. If successful, the shared liquidity layer could attract institutional capital that has so far remained on the sidelines of DeFi, wary of fragmented markets and slippage between competing stablecoins.

The broader DeFi sector has faced headwinds this year. Total value locked across all chains fell to a multi-month low in May, with combined exchange volumes dropping 3.45% to $4.41 trillion — the lowest since September 2024, according to CryptoRank. Security incidents added pressure, with 121 hacks and roughly $942 million in losses year-to-date through May.

But real-world asset perpetual futures volumes rose 10.4% against the trend in May, hitting a new all-time high, signaling growing appetite for on-chain exposure to traditional assets. The stablecoin FX layer could accelerate that convergence by making it cheaper and faster to move between digital dollars from different issuers.

This article is for informational purposes only and does not constitute investment advice.