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Circle Gateway adds ERC-1271 support for smart contract USDC wallets

Circle Gateway adds ERC-1271 support for smart contract USDC wallets

The update lets smart contracts and smart wallets use existing authorization logic for cross-chain USDC operations without delegate-based approval flows.

USDC

Fact Check
Circle's official blog post (August 4, 2026) and official @circle X posts directly confirm every element of the claim: Gateway added ERC-1271 support so smart contracts and smart wallets can use their existing authorization logic to access cross-chain USDC balances without delegate-based approval flows. This is corroborated by independent reporting from cryptobriefing.com. The primary source is the entity's own official domain and verified X account.
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Summary

Circle has updated Gateway to support ERC-1271, allowing smart contracts and smart contract wallets to interact with cross-chain USDC balances using their existing authorization logic. The change removes the need for delegate-based approval flows that previously added setup steps and operational overhead for DeFi protocols, treasury systems, payment infrastructure and smart wallet applications. Gateway gives developers a unified USDC balance across supported blockchains. After USDC is deposited into Gateway Wallet contracts, applications can view their cross-chain balance and mint USDC on supported destination chains through Gateway’s API and contracts. Circle said the update expands cross-chain workflows while preserving existing policy controls and does not change USDC’s centralized issuance model or its broader regulatory and operational framework. The company said existing Gateway users that rely on delegate-based authorization can migrate toward direct smart contract integration through ERC-1271. Circle also said the feature supports smart wallets, DeFi protocols and payment systems that want programmable authorization without maintaining delegate approvers or pre-funded balances on every network.

Terms & Concepts
  • ERC-1271: Ethereum standard for contract-based signature verification
  • smart contract wallets: Wallets controlled by on-chain logic rather than a plain externally owned account
  • delegate-based approval flows: Authorization setup where a separate account signs or approves actions on behalf of a contract