The Fidelity Digital Dollar stablecoin deployed Curve Finance Stableswap LP positions and Uniswap LP positions simultaneously in a single Ethereum block Thursday evening, with Curve founder Michael Egorov noting the same-block execution as evidence of DeFi operational expertise.
The Fidelity Digital Dollar reportedly deployed liquidity to both Curve Finance and Uniswap in a single Ethereum block Thursday evening, with an on-chain watcher flagging the move as the Fidelity-branded stablecoin’s first foray onto permissionless DeFi rails.
LytninCrypto, an on-chain data tracker, posted the discovery Thursday, noting that the FIDD liquidity adder wallet set up Curve Finance Stableswap LP positions and Uniswap LP positions simultaneously. Curve founder Michael Egorov responded within six minutes. “Same block to both protocols, wow,” Egorov wrote on X. “@Fidelity do know how to use DeFi!”.
Fidelity Digital Assets has made no public statement specifically about the Curve or Uniswap deployment.
The Issuer and the Token
Fidelity Digital Assets, National Association, a federally chartered subsidiary of Fidelity Investments, issued FIDD in February. The stablecoin is backed 1:1 with cash and short-term US Treasuries, built on the ERC-20 standard on Ethereum, and designed for GENIUS Act compliance. Monthly reserve reports are published by the subsidiary on its website. Fidelity targets both institutional on-chain settlement and retail payments with the token.
The asset manager’s blockchain trajectory has built steadily: Fidelity filed to tokenize an on-chain Treasury fund, runs both a spot Bitcoin ETF and a spot Ethereum ETF, and added staking to its Ethereum ETF application. FIDD extends that posture to active liquidity infrastructure.
What the Same-Block Deployment Tells Us
Deploying liquidity to both Curve and Uniswap inside a single Ethereum block requires coordinating transaction calls in advance, typically through a scripted multi-call contract. Doing so in one block eliminates any window where FIDD would sit on one venue but not the other, a hygiene detail that matters for price consistency at launch. Together the two pools give FIDD coverage across the two deepest permissionless liquidity layers on Ethereum. Curve processed $34.6 billion in trading volume in Q1 2026, per earlier The Defiant reporting.
The Broader TradFi-DeFi Picture
The GENIUS Act, signed into law last year, created a compliance path for federally regulated stablecoin issuers and accelerated institutional launches. Stablecoin supply grew by $18 billion in the month following the Act’s passage, per prior The Defiant reporting.
Adding Curve and Uniswap pools as FIDD’s primary liquidity layer plants a regulated, Fidelity-issued dollar instrument inside the same DeFi composability stack that permissionless protocols use.