Ethereum and Base Abandon Unified Wallet Standard After Prolonged Negotiations

The blockchain ecosystem has long been driven by the pursuit of interoperability, especially when it comes to the user experience of managing digital assets across multiple networks. In recent months, however, two of the most prominent platforms—Ethereum, the world’s leading smart‑contract blockchain, and Base, the emerging layer‑2 solution backed by Coinbase—have reached a pivotal crossroads.

After extensive discussions that spanned several quarters, the two projects have decided to part ways on a shared wallet standard, opting instead for distinct proposals that reflect their individual technical priorities and strategic visions. ## Background: The Quest for a Common Wallet Standard Wallets serve as the primary gateway for users to interact with decentralized applications (dApps), send and receive tokens, and sign transactions. Historically, the lack of a unified transaction format has forced developers to implement multiple code paths, increasing complexity and the risk of bugs. To address this, the Ethereum community has been working on a series of Ethereum Improvement Proposals (EIPs) aimed at standardising how transactions are constructed, signed, and broadcast.

Two of the most notable proposals that have been under consideration are EIP‑8141 and EIP‑8130. EIP‑8141, often referred to as the "Unified Transaction Envelope," proposes a flexible, extensible format that can accommodate a wide range of transaction types, including legacy transfers, contract calls, and emerging features such as account abstraction. Its design is deliberately broad, allowing future upgrades without breaking existing tooling.

On the other hand, EIP‑8130, championed by the Base team, focuses on a leaner, more performance‑oriented structure that optimises for the specific needs of roll‑up environments. It streamlines certain fields to reduce calldata overhead, which can translate into lower gas costs for users on layer‑2 solutions. Both proposals share the same overarching goal: to simplify wallet development and improve the end‑user experience. Yet, the technical trade‑offs they present are not trivial.

While EIP‑8141 offers maximum flexibility, it introduces additional complexity that can increase transaction size. Conversely, EIP‑8130’s streamlined approach can limit certain advanced functionalities that developers might want to leverage in the future. ## The Negotiation Process The dialogue between Ethereum core developers and the Base engineering team began in early 2023. Initial meetings focused on aligning the two proposals into a single, cohesive standard that could be adopted universally.

Over the course of several months, working groups exchanged drafts, performed extensive testing on testnets, and solicited feedback from major wallet providers such as MetaMask, Rainbow, and Coinbase Wallet. Key points of contention emerged around three primary areas: 1. **Transaction Size vs. Gas Efficiency**: Ethereum’s broader community emphasised the importance of a future‑proof format that could accommodate novel transaction types without frequent hard forks.

Base, however, argued that for roll‑up chains, minimizing calldata is paramount to preserving the cost advantages that layer‑2 solutions promise. 2. **Account Abstraction Compatibility**: EIP‑8141 includes explicit hooks for account abstraction, a feature that enables smart contract wallets to act as first‑class accounts.

Base’s proposal, while not excluding this capability, placed it in an optional extension rather than a core component, leading to concerns about consistency across ecosystems. 3.

**Governance and Upgrade Path**: Ethereum’s governance model relies on broad consensus and a relatively slow, measured rollout of changes. Base, operating under Coinbase’s strategic guidance, favoured a more agile approach that could iterate quickly in response to market demands. Despite numerous compromise attempts—such as introducing optional fields in EIP‑8141 that could be ignored by roll‑ups, or adding a lightweight mode to EIP‑8130—both sides eventually concluded that a single, unified standard would likely delay critical upgrades on each platform.

## The Decision to Diverge In a joint statement released in July 2024, the Ethereum Foundation and the Base team announced that they would each move forward with their respective proposals. Ethereum will implement EIP‑8141 as part of its upcoming Shanghai‑plus upgrade, while Base will adopt EIP‑8130 for its mainnet launch later this year. The announcement acknowledged that the split would create a "dual‑standard" environment but framed it as an opportunity for the broader ecosystem to innovate. The statement highlighted several reasons for the split: - **Technical Alignment**: Each network can now optimise its transaction processing pipeline without being constrained by the other’s design goals.

- **Speed of Deployment**: Base can roll out its improvements on a faster cadence, while Ethereum can continue its methodical upgrade schedule. - **Community Autonomy**: Wallet developers and dApp creators will have the flexibility to choose the standard that best fits their target audience, rather than being forced into a one‑size‑fits‑all solution. ## Implications for Wallets and dApps The emergence of two distinct standards introduces new challenges for wallet developers, especially those that aim to support both Ethereum and Base seamlessly.

Here are the primary considerations: ### 1. Dual‑Implementation Overhead Developers will now need to maintain two separate code paths for transaction creation and signing.

This means integrating both EIP‑8141 and EIP‑8130 libraries, handling edge cases where a transaction format may be rejected by the opposite network, and ensuring that UI elements correctly reflect the underlying transaction type. While this adds development effort, many wallet teams view it as a manageable cost given the growing user base on Base. ### 2.

User Experience Consistency From a user perspective, the goal remains a frictionless experience. Wallets must abstract away the technical differences, presenting a unified interface while automatically selecting the appropriate format behind the scenes. This may involve intelligent network detection, fallback mechanisms, and clear messaging when a transaction cannot be processed due to format incompatibility.

### 3. Security Audits and Compatibility Testing Each standard will undergo its own security review cycles.

Wallet providers will need to audit both implementations to ensure that signature handling, replay protection, and fee calculations are robust. Additionally, cross‑chain bridges and aggregators that move assets between Ethereum and Base will need to translate transactions between the two formats, potentially adding latency or requiring additional on‑chain logic. ### 4.

Opportunities for Innovation The split also opens the door for third‑party tools that can act as translators or adapters. For example, a middleware service could accept an EIP‑8141 transaction, convert it into the EIP‑8130 schema, and forward it to Base, or vice versa. Such services could become valuable infrastructure components, especially for DeFi protocols that operate on multiple layers. ## Looking Ahead While the decision to abandon a single wallet standard may initially appear as a setback for interoperability, many industry observers argue that it reflects the natural evolution of a maturing blockchain ecosystem.

As layer‑2 solutions like Base gain traction, they bring unique performance requirements that may not align perfectly with the broader Ethereum roadmap. By allowing each network to pursue the standard that best serves its users, the community can foster specialized innovation while still maintaining pathways for cross‑chain interaction.

In the coming months, we can expect to see wallet providers roll out updates that incorporate both EIP‑8141 and EIP‑8130 support. Developers will likely share best‑practice guides, SDKs will be expanded, and open‑source libraries will emerge to simplify the dual‑standard integration. For end‑users, the ultimate goal remains unchanged: a smooth, secure, and intuitive experience when moving assets, signing contracts, and interacting with decentralized applications across the Ethereum ecosystem and its expanding layer‑2 landscape. The divergence of standards serves as a reminder that the blockchain space is still in a phase of rapid experimentation and refinement.

As new use cases arise and scalability solutions evolve, the community will continue to balance the competing demands of flexibility, efficiency, and security. In this dynamic environment, the ability to adapt—whether through multiple standards or innovative bridging solutions—will be key to sustaining growth and delivering value to users worldwide.