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Engineering

Bypassing the Gas Crisis: ERC-4337 Paymasters on L2 Networks

By Protocol Engineering · June 15, 2026 · 5 min read

Engineering

The gas fee friction

One of the largest hurdles to mainstream blockchain adoption is gas fees. Forcing a user to buy and hold ETH or MATIC just to transfer USDC is a poor experience. If a user holds $50 of USDC, they should be able to send it immediately — without buying a gas token first.

Account abstraction & Paymasters

Furlpay leverages ERC-4337 account abstraction to solve this. Every Furlpay wallet is a deployed Safe smart-contract account. When a transaction is submitted:

  • The transaction is packaged as a UserOperation.
  • It is sent to a Paymaster contract on-chain.
  • The Paymaster pays the network gas fee (in ETH) to the validator.
  • The Paymaster then deducts the equivalent value in USDC from the transaction — or sponsors the fee entirely for promotional tiers.
[ User Action ] ──(USDC)──> [ Paymaster Contract ] ──(ETH gas paid)──> [ Blockchain Network ]

This gas abstraction makes stablecoin transactions feel exactly like traditional Web2 payments — smooth, fast and free of blockchain jargon.