We are welcoming you to our weekly digest! Here, we discuss the latest trends and advancements in account abstraction, chain abstraction and everything related, as well as bring some insights from Etherspot’s kitchen.
The latest news we’ll cover:
- Circle Gateway Redefines Cross-Chain UX with Unified USDC Balance
- Ethereum Core Devs Advance Fusaka & Glamsterdam in ACDC #163
- Coinbase Developer Platform Adds ERC-4337 Smart Accounts to Embedded Wallets
- Rhinestone Showcases Future of Intents Through Builder Perspectives
Please fasten your belts!
Circle Gateway Redefines Cross-Chain UX with Unified USDC Balance
Circle has launched Circle Gateway, a new smart contract and API system that enables users and businesses to maintain a single, unified USDC balance instantly accessible across multiple blockchains. Circle Gateway is designed for onramps, PSPs, exchanges, custodians, wallets, and other developers facing the complexity of fragmented liquidity in a multichain world.
This development was already highlighted in our July newsletter, where Circle Gateway was first announced. The launch now moves those concepts from research into live infrastructure, positioning USDC as a central liquidity layer across chains.
Today, many teams must pre-position USDC across networks, absorbing costs and delays from rebalancing and bridging. Gateway eliminates this by combining smart contract infrastructure with an off-chain attestation service that allows cross-chain USDC transfers in under 500 ms.
A USDC deposit on any supported chain is credited to a unified balance, which can then be moved or withdrawn on another chain with a signed burn intent and Gateway attestation. Minting on the destination chain occurs in the very next block, creating a near single-chain user experience.
At launch, Gateway supports Arbitrum, Avalanche, Base, Ethereum, OP Mainnet, Polygon PoS, and Unichain, with Arc and additional networks planned. Launch partners include Aori, BlockRadar, Cray, Daimo Pay, Dfns, Eco, Enclave Money, Fireblocks, Particle Network, Rath Finance, Rhinestone, RockawayX, and Superform.
Ethereum Core Devs Advance Fusaka & Glamsterdam in ACDC #163
Christine D. Kim published notes from the All Core Developers Consensus (ACDC) call #163, which focused on the progress of the Fusaka and Glamsterdam upgrades and identified edge cases in upcoming proposals. The call, held August 22, 2025, was notably shorter than usual, lasting just 30 minutes instead of the typical 90.
On Fusaka, Devnet-3 has stabilized after earlier non-finality issues, but Devnet-4 is deprecated. A launch of Devnet-5 had been targeted for August 26, though client teams now project readiness later that week or into early September.
For Glamsterdam, two breakout calls are scheduled: August 27 for EIP-7928 block-level access lists (BALs) and August 29 for EIP-7732 enshrined proposer-builder separation (ePBS). Prysm developer Potuz reported progress on EIP-7732 implementation, noting remaining work on specifications such as “dual deadlines.”
Ethereum Foundation researchers Ansgar Dietrichs and Maria Inês Silva have also drafted an EIP for gas repricing and optimizations. EF protocol coordinator Alex Stokes reminded teams that all Glamsterdam proposals should be submitted by October, in line with Fusaka mainnet releases.
The call reaffirmed that parallel development of Fusaka and Glamsterdam is advancing, though timelines remain tight.
Coinbase Developer Platform Adds Smart Accounts to Embedded Wallets
The Coinbase Developer Platform (CDP) announced that Embedded Wallets now support Smart Accounts (ERC-4337), extending account abstraction features directly into developer applications. This addition enables developers to create user experiences that combine the simplicity of embedded onboarding with the flexibility of smart contract wallets.
Smart accounts unlock batched transactions and gas sponsorship via the CDP Paymaster, allowing multiple actions in a single user operation and the option for users to transact without holding ETH. With createAccountOnLogin set to “evm-smart,” new users automatically receive both an externally owned account (EOA) and a smart account. Developers can then programmatically submit ERC-4337 user operations using React hooks such as useSendUserOperation.
The integration also introduces streamlined developer tooling. Hooks like useCurrentUser and useEvmAddress allow direct access to user accounts, while built-in paymaster integration makes it simple to sponsor gas fees or connect to custom paymasters.
Embedded Wallets remain non-custodial, giving developers flexibility to design experiences where users retain control while benefiting from gasless interactions.
Although the Embedded Wallets Policy Engine is not yet supported, Coinbase notes that Paymaster allowlists are available today, and spend-permission APIs are planned for future releases.
Rhinestone Showcases Future of Intents Through Builder Perspectives
Rhinestone released an X thread exploring the future of blockchain intents, gathering insights from five teams actively building with the technology. Today, most intents are limited to swaps and transfers, but developers envision far more complex applications involving automation, cross-chain strategies, and new DeFi primitives.
Builders from BarterDeFi, Clave, Contango, Superform, and LIFI Protocol each shared perspectives.
Superform’s team described intents powering cross-chain yield optimization, noting that agents could compete to execute strategies only when yield thresholds are met, transforming user intents into programmable rebalancing mechanisms.
LIFI Protocol emphasized opportunities in real-world assets (RWA), where intents could automate distribution across stable yield-bearing instruments, reducing user decision-making overhead.
BarterDeFi highlighted wallet-native intents as a potential unlock for P2P and under-collateralized lending, while Clave illustrated cross-chain arbitrage: lending on Aave’s Base deployment while borrowing on Arbitrum to exploit rate differences.
Together, these visions underline a future where solvers handle increasingly sophisticated tasks beyond swaps, making intents a building block for advanced financial automation.
Start exploring Account Abstraction with Etherspot!
- Learn more about account abstraction here.
- Head to our docs and read all about Etherspot Modular SDK.
- Skandha — developer-friendly Typescript ERC4337 Bundler.
- Arka — an open-source Paymaster Service for gasless & sponsored transactions.
- Explore our TransactionKit, a React library for fast & simple Web3 development.
- Follow us on X (Twitter) and join our Discord.
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Top comments (1)
Great roundup...love seeing the ecosystem move toward solving developer friction with unified liquidity, smart accounts, and intents. At haveto.com
, we’re thinking along the same lines: letting devs deploy AI and on-chain logic in their own languages (Python, Go, Rust) and truly own their models as assets. Exciting times for Web3.